Caseware UK (AP4) 2024.0.164 2024.0.164 2024-09-302024-09-300falsetruetrueNo description of principal activityfalsetruetruetrue2023-10-010false 05909611 2023-10-01 2024-09-30 05909611 2022-10-01 2023-09-30 05909611 2024-09-30 05909611 2023-09-30 05909611 2022-10-01 05909611 1 2023-10-01 2024-09-30 05909611 d:CompanySecretary1 2023-10-01 2024-09-30 05909611 d:Director1 2023-10-01 2024-09-30 05909611 d:Director2 2023-10-01 2024-09-30 05909611 d:Director2 2024-09-30 05909611 d:Director3 2023-10-01 2024-09-30 05909611 d:Director3 2024-09-30 05909611 d:Director4 2023-10-01 2024-09-30 05909611 d:Director4 2024-09-30 05909611 d:RegisteredOffice 2023-10-01 2024-09-30 05909611 c:CurrentFinancialInstruments 2024-09-30 05909611 c:CurrentFinancialInstruments 2023-09-30 05909611 c:CurrentFinancialInstruments c:WithinOneYear 2024-09-30 05909611 c:CurrentFinancialInstruments c:WithinOneYear 2023-09-30 05909611 c:UKTax 2023-10-01 2024-09-30 05909611 c:UKTax 2022-10-01 2023-09-30 05909611 c:ShareCapital 2024-09-30 05909611 c:ShareCapital 2022-10-01 2023-09-30 05909611 c:ShareCapital 2023-09-30 05909611 c:ShareCapital 2022-10-01 05909611 c:SharePremium 2023-10-01 2024-09-30 05909611 c:SharePremium 2024-09-30 05909611 c:SharePremium 2022-10-01 2023-09-30 05909611 c:SharePremium 2023-09-30 05909611 c:SharePremium 2022-10-01 05909611 c:RetainedEarningsAccumulatedLosses 2023-10-01 2024-09-30 05909611 c:RetainedEarningsAccumulatedLosses 2024-09-30 05909611 c:RetainedEarningsAccumulatedLosses 2022-10-01 2023-09-30 05909611 c:RetainedEarningsAccumulatedLosses 2023-09-30 05909611 c:RetainedEarningsAccumulatedLosses 2022-10-01 05909611 d:OrdinaryShareClass1 2023-10-01 2024-09-30 05909611 d:OrdinaryShareClass1 2024-09-30 05909611 d:OrdinaryShareClass1 2023-09-30 05909611 d:FRS102 2023-10-01 2024-09-30 05909611 d:Audited 2023-10-01 2024-09-30 05909611 d:FullAccounts 2023-10-01 2024-09-30 05909611 d:PrivateLimitedCompanyLtd 2023-10-01 2024-09-30 05909611 c:Subsidiary1 2023-10-01 2024-09-30 05909611 c:Subsidiary2 2023-10-01 2024-09-30 05909611 c:Subsidiary3 2023-10-01 2024-09-30 05909611 c:Subsidiary4 2023-10-01 2024-09-30 05909611 c:Subsidiary5 2023-10-01 2024-09-30 05909611 c:Subsidiary6 2023-10-01 2024-09-30 05909611 c:Subsidiary7 2023-10-01 2024-09-30 05909611 c:Subsidiary8 2023-10-01 2024-09-30 05909611 c:Subsidiary9 2023-10-01 2024-09-30 05909611 c:Subsidiary10 2023-10-01 2024-09-30 05909611 c:Subsidiary11 2023-10-01 2024-09-30 05909611 c:Subsidiary12 2023-10-01 2024-09-30 05909611 c:Subsidiary13 2023-10-01 2024-09-30 05909611 c:Subsidiary14 2023-10-01 2024-09-30 05909611 c:Subsidiary15 2023-10-01 2024-09-30 05909611 c:Subsidiary16 2023-10-01 2024-09-30 05909611 c:Subsidiary17 2023-10-01 2024-09-30 05909611 c:Subsidiary18 2023-10-01 2024-09-30 05909611 c:Subsidiary19 2023-10-01 2024-09-30 05909611 c:Subsidiary20 2023-10-01 2024-09-30 05909611 c:Subsidiary21 2023-10-01 2024-09-30 05909611 c:Subsidiary22 2023-10-01 2024-09-30 05909611 c:Subsidiary23 2023-10-01 2024-09-30 05909611 c:Subsidiary24 2023-10-01 2024-09-30 05909611 c:Subsidiary25 2023-10-01 2024-09-30 05909611 c:Subsidiary26 2023-10-01 2024-09-30 05909611 c:Subsidiary27 2023-10-01 2024-09-30 05909611 c:Subsidiary28 2023-10-01 2024-09-30 05909611 c:Subsidiary29 2023-10-01 2024-09-30 05909611 c:Subsidiary30 2023-10-01 2024-09-30 05909611 2 2023-10-01 2024-09-30 05909611 6 2023-10-01 2024-09-30 05909611 e:PoundSterling 2023-10-01 2024-09-30 05909611 f:UnitedStates 2023-10-01 2024-09-30 xbrli:shares iso4217:GBP xbrli:pure

Registered number: 05909611










TETRA TECH UK HOLDINGS LIMITED










ANNUAL REPORT AND FINANCIAL STATEMENTS

FOR THE YEAR ENDED 30 SEPTEMBER 2024

 
TETRA TECH UK HOLDINGS LIMITED
 

COMPANY INFORMATION


Directors
R A Lemmon 
J D Lovell (resigned 11 December 2024)
B J Ward (resigned 22 March 2024)
C J Green (appointed 11 December 2024)




Company secretary
P Hopson
 
A Murdoch (appointed 5 October 2023)



Registered number
05909611



Registered office
1 Northfield Road

Reading

Berkshire

RG1 8AH




Independent auditor
James Cowper Kreston Audit
Chartered Accountants and Statutory Auditor

Reading Bridge House

George Street

Reading

Berkshire

RG1 8LS





 
TETRA TECH UK HOLDINGS LIMITED
 

CONTENTS



Page
Strategic report
1 - 2
Directors' report
3 - 4
Independent auditor's report
5 - 7
Statement of comprehensive income
8
Balance sheet
9
Statement of changes in equity
10
Notes to the financial statements
11 - 24


 
TETRA TECH UK HOLDINGS LIMITED
 

STRATEGIC REPORT
FOR THE YEAR ENDED 30 SEPTEMBER 2024

Introduction
 
The Directors present their Strategic Report for Tetra Tech UK Holdings Limited (the ‘Company’) for the year ended 30 September 2024

Strategic review
 
The Company continues to act as an intermediate holding company of a group of companies. As the parent company Tetra Tech, Inc. (‘Tetra Tech’) continues to expand in the UK and Europe, the strategic aims of the holding company are to provide the necessary financial support to ensure the stability and growth of the various operating companies.
Strategic review
The profit before tax for the year was £82,285,000 (2023: £11,650,000). Income from fixed asset investments totalled £77,718,000 (2023: £8,065,000) and the Company paid dividends of £104,080,000 (2023 £39,500,000). 
Future developments and subsequent events
The Tetra Tech group offers an increasingly wide range of services to a broad client base and is actively growing its business portfolio in the UK and Europe. We believe the Company is well positioned to continue to provide services and to adapt to continually changing circumstances.
Since the year end the Company has received dividends totalling £174,359,000 and paid dividends of £221,359,000.
On 24 March 2025 the Company acquired 100% of the share capital of Carron + Walsh Construction Consultants Limited, a company registered in the Republic of Ireland which delivers project and cost management solutions for large-scale commercial, life science, residential and infrastructure programs across Europe.  The initial consideration was €5,250,000.
Key performance indicators
The Company uses the following key performance indicators to monitor its performance:
      Year ended     Year ended
                            30 September 2024        30 September 2023
             
Profit after tax                £81,063,000     £9,541,000
Investments             £786,325,000   £786,733,000
Principal risks and uncertainties
The Company is a holding company and is not directly exposed to any specific risks.  The Company’s investments do face risks and uncertainties although none of these had an impact on the recoverable amount of investments and loans at 30 September 2024. The Company’s Directors and senior management regularly review these risks and their potential impact on the Company.

Page 1

 
TETRA TECH UK HOLDINGS LIMITED
 

STRATEGIC REPORT (CONTINUED)
FOR THE YEAR ENDED 30 SEPTEMBER 2024

Section 172 (1) Statement
 
The Directors are mindful of their duties under Section 172 of the Companies Act 2006 to promote the success of the Company with regards to all its stakeholders and has complied with this. The Company’s Board works within the principles of the Tetra Tech group’s governance structure and decisions affecting the Company are required to be taken in line with this, including in accordance with the applicable delegations of authority.  The Company’s key stakeholder and sole shareholder is the parent company, Tetra Tech, Inc., and all decisions and actions consider the potential long-term impact on the wider Tetra Tech group.
As a responsible corporate citizen, the Company and the wider Tetra Tech group is committed to the highest standards of ethics, integrity and compliance in all respects of our business.  The Company’s corporate social responsibility practices are aligned to those of Tetra Tech, Inc. and the most recent Sustainability Report Card is publicly available at www.tetratech.com.

Decision making
The Directors monitor the investments in companies in its region and the recoverability of balance due from group undertakings.  This includes the review of budgets, forecasts and the strategic plans for the businesses in its region and monitoring the performance and financial position of these companies.
Community and environment
The Directors recognise the importance of the Company contributing to the wider society and the Company’s subsidiaries support clients to develop environmental and socially responsible solutions.
We recognise our obligation to manage the impact of the Company’s operations on the environment and endeavour to limit our impact where possible.  Carbon management, adaptation and mitigation strategies are under review by the Tetra Tech group to identify opportunities for energy efficiency and energy reduction.  


This report was approved by the board and signed on its behalf.


................................................
C J Green
Director
Date: 13 June 2025

Page 2

 
TETRA TECH UK HOLDINGS LIMITED
 

 
DIRECTORS' REPORT
FOR THE YEAR ENDED 30 SEPTEMBER 2024

The directors present their report and the financial statements for the year ended 30 September 2024.

Directors' responsibilities statement

The Directors are responsible for preparing the Strategic report, the Directors' report and the financial statements in accordance with applicable law and regulations.
 
Company law requires the Directors to prepare financial statements for each financial year. Under that law the directors have elected to prepare the financial statements in accordance with applicable law and United Kingdom Accounting Standards (United Kingdom Generally Accepted Accounting Practice), including Financial Reporting Standard 102 ‘The Financial Reporting Standard applicable in the UK and Republic of Ireland'. Under company law the directors must not approve the financial statements unless they are satisfied that they give a true and fair view of the state of affairs of the Company and of the profit or loss of the Company for that period.

 In preparing these financial statements, the directors are required to:


select suitable accounting policies for the Company's financial statements and then apply them consistently;

make judgments and accounting estimates that are reasonable and prudent;

state whether applicable UK Accounting Standards have been followed, subject to any material departures disclosed and explained in the financial statements;

prepare the financial statements on the going concern basis unless it is inappropriate to presume that the Company will continue in business.

The Directors are responsible for keeping adequate accounting records that are sufficient to show and explain the Company's transactions and disclose with reasonable accuracy at any time the financial position of the Company and to enable them to ensure that the financial statements comply with the Companies Act 2006They are also responsible for safeguarding the assets of the Company and hence for taking reasonable steps for the prevention and detection of fraud and other irregularities.
The directors are responsible for the maintenance and integrity of the corporate and financial information included in the website.  Legislation in the United Kingdom governing the preparation and dissemination of financial statements may differ from legislation in other jurisdictions.

Going concern

The directors expect the Company to continue to operate for a period of no less than 12 months from the date of the signing of the director’s report. Thus, they continue to adopt the going concern basis in preparing the financial statements. 

Directors

The Directors who served during the year and up to the date of this report were:

R A Lemmon 
J D Lovell (resigned 11 December 2024)
B J Ward (resigned 22 March 2024)
C J Green (appointed 11 December 2024)
 
Page 3

 
TETRA TECH UK HOLDINGS LIMITED
 

 
DIRECTORS' REPORT (CONTINUED)
FOR THE YEAR ENDED 30 SEPTEMBER 2024

Future developments and post balance sheet events

Details of future developments can be found in the Strategic report on page 1.
Directors' indemnities
Directors and Officers of the Company, including Directors and Officers of the wider Tetra Tech group, benefit from directors' and officers' liability insurance cover in respect of legal actions brought against them.  In addition, Directors are indemnified under the Company's articles of association to the maximum extend permitted by law, such indemnities being qualifying third party indemnities.

Statement of disclosure of information to auditor

Each of the persons who are directors at the time when this Directors' report is approved has confirmed that:
 
so far as the director is aware, there is no relevant audit information of which the Company's auditor is unaware, and

the director has taken all the steps that ought to have been taken as a director in order to be aware of any relevant audit information and to establish that the Company's auditor is aware of that information.

Auditor

The auditor, James Cowper Kreston Auditwill be proposed for reappointment in accordance with section 485 of the Companies Act 2006.

This report was approved by the board and signed on its behalf.
 



................................................
C J Green
Director
Date: 13 June 2025

Page 4

 
TETRA TECH UK HOLDINGS LIMITED
 

 
INDEPENDENT AUDITOR'S REPORT TO THE MEMBERS OF TETRA TECH UK HOLDINGS LIMITED
 

Opinion


We have audited the financial statements of Tetra Tech UK Holdings Limited (the 'Company') for the year ended 30 September 2024, which comprise the Statement of comprehensive income, the Balance sheet, the Statement of changes in equity and the related notes, including a summary of significant accounting policiesThe financial reporting framework that has been applied in their preparation is applicable law and United Kingdom Accounting Standards, including Financial Reporting Standard 102 ‘The Financial Reporting Standard applicable in the UK and Republic of Ireland' (United Kingdom Generally Accepted Accounting Practice).


In our opinion the financial statements:


give a true and fair view of the state of the Company's affairs as at 30 September 2024 and of its profit for the year then ended;
have been properly prepared in accordance with United Kingdom Generally Accepted Accounting Practice; and
have been prepared in accordance with the requirements of the Companies Act 2006.


Basis for opinion


We conducted our audit in accordance with International Standards on Auditing (UK) (ISAs (UK)) and applicable law. Our responsibilities under those standards are further described in the Auditor's responsibilities for the audit of the financial statements section of our report. We are independent of the Company in accordance with the ethical requirements that are relevant to our audit of the financial statements in the United Kingdom, including the Financial Reporting Council's Ethical Standard and we have fulfilled our other ethical responsibilities in accordance with these requirements. We believe that the audit evidence we have obtained is sufficient and appropriate to provide a basis for our opinion.


Conclusions relating to going concern


In auditing the financial statements, we have concluded that the directors' use of the going concern basis of accounting in the preparation of the financial statements is appropriate.


Based on the work we have performed, we have not identified any material uncertainties relating to events or conditions that, individually or collectively, may cast significant doubt on the Company's ability to continue as a going concern for a period of at least twelve months from when the financial statements are authorised for issue.


Our responsibilities and the responsibilities of the directors with respect to going concern are described in the relevant sections of this report.


Other information


The other information comprises the information included in the Annual Report other than the financial statements and our Auditor's report thereon. The directors are responsible for the other information contained within the Annual ReportOur opinion on the financial statements does not cover the other information and, except to the extent otherwise explicitly stated in our report, we do not express any form of assurance conclusion thereon. Our responsibility is to read the other information and, in doing so, consider whether the other information is materially inconsistent with the financial statements or our knowledge obtained in the course of the audit, or otherwise appears to be materially misstated. If we identify such material inconsistencies or apparent material misstatements, we are required to determine whether this gives rise to a material misstatement in the financial statements themselves. If, based on the work we have performed, we conclude that there is a material misstatement of this other information, we are required to report that fact.


We have nothing to report in this regard.


Page 5

 
TETRA TECH UK HOLDINGS LIMITED
 

 
INDEPENDENT AUDITOR'S REPORT TO THE MEMBERS OF TETRA TECH UK HOLDINGS LIMITED (CONTINUED)


Opinion on other matters prescribed by the Companies Act 2006
 

In our opinion, based on the work undertaken in the course of the audit:


the information given in the Strategic report and the Directors' report for the financial year for which the financial statements are prepared is consistent with the financial statements; and
the Strategic report and the Directors' report have been prepared in accordance with applicable legal requirements.


Matters on which we are required to report by exception
 

In the light of the knowledge and understanding of the Company and its environment obtained in the course of the audit, we have not identified material misstatements in the Strategic report or the Directors' report.


We have nothing to report in respect of the following matters in relation to which the Companies Act 2006 requires us to report to you if, in our opinion:


adequate accounting records have not been kept, or returns adequate for our audit have not been received from branches not visited by us; or
the financial statements are not in agreement with the accounting records and returns; or
certain disclosures of directors' remuneration specified by law are not made; or
we have not received all the information and explanations we require for our audit.


Responsibilities of directors
 

As explained more fully in the Directors' responsibilities statement set out on page 3, the directors are responsible for the preparation of the financial statements and for being satisfied that they give a true and fair view, and for such internal control as the directors determine is necessary to enable the preparation of financial statements that are free from material misstatement, whether due to fraud or error.


In preparing the financial statements, the directors are responsible for assessing the Company's ability to continue as a going concern, disclosing, as applicable, matters related to going concern and using the going concern basis of accounting unless the directors either intend to liquidate the Company or to cease operations, or have no realistic alternative but to do so.


Auditor's responsibilities for the audit of the financial statements
 

Our objectives are to obtain reasonable assurance about whether the financial statements as a whole are free from material misstatement, whether due to fraud or error, and to issue an Auditor's report that includes our opinion. Reasonable assurance is a high level of assurance, but is not a guarantee that an audit conducted in accordance with ISAs (UK) will always detect a material misstatement when it exists. Misstatements can arise from fraud or error and are considered material if, individually or in the aggregate, they could reasonably be expected to influence the economic decisions of users taken on the basis of these financial statements.


Irregularities, including fraud, are instances of non-compliance with laws and regulations. We design procedures in line with our responsibilities, outlined above, to detect material misstatements in respect of irregularities, including fraud. The extent to which our procedures are capable of detecting irregularities, including fraud is detailed below:



A further description of our responsibilities for the audit of the financial statements is located on the Financial Reporting Council's website at: www.frc.org.uk/auditorsresponsibilities. This description forms part of our Auditor's report.


Page 6

 
TETRA TECH UK HOLDINGS LIMITED
 

 
INDEPENDENT AUDITOR'S REPORT TO THE MEMBERS OF TETRA TECH UK HOLDINGS LIMITED (CONTINUED)


Use of our report
 

This report is made solely to the Company's members, as a body, in accordance with Chapter 3 of Part 16 of the Companies Act 2006Our audit work has been undertaken so that we might state to the Company's members those matters we are required to state to them in an Auditor's report and for no other purpose. To the fullest extent permitted by law, we do not accept or assume responsibility to anyone other than the Company and the Company's members, as a body, for our audit work, for this report, or for the opinions we have formed.





Alexander Peal BSc(Hons) DChA (Senior Statutory Auditor)
  
for and on behalf of
James Cowper Kreston Audit
 
Chartered Accountants and Statutory Auditor
  
Reading Bridge House
George Street
Reading
Berkshire
RG1 8LS

16 June 2025
Page 7

 
TETRA TECH UK HOLDINGS LIMITED
 

STATEMENT OF COMPREHENSIVE INCOME
FOR THE YEAR ENDED 30 SEPTEMBER 2024

2024
2023
Note
£000
£000

  

Other operating income
  
349
-

Administrative expenses
  
(27)
(1)

Operating profit/(loss)
 4 
322
(1)

Income from fixed assets investments
     7
77,718
8,065

Interest receivable and similar income
 8 
4,559
4,224

Interest payable and similar expenses
 9 
(314)
(638)

Profit before tax
  
82,285
11,650

Tax on profit
 10 
(1,222)
(2,109)

Profit for the financial year
  
81,063
9,541

The notes on pages 11 to 24 form part of these financial statements.

Page 8

 
TETRA TECH UK HOLDINGS LIMITED
REGISTERED NUMBER: 05909611

BALANCE SHEET
AS AT 30 SEPTEMBER 2024

2024
2023
Note
£000
£000

Fixed assets
  

Investments
 12 
786,325
786,733

  
786,325
786,733

Current assets
  

Debtors: amounts falling due within one year
 13 
49,410
90,784

Cash at bank and in hand
 14 
8,637
13,741

  
58,047
104,525

Creditors: amounts falling due within one year
 15 
(27,919)
(51,788)

Net current assets
  
 
 
30,128
 
 
52,737

Total assets less current liabilities
  
816,453
839,470

  

Net assets
  
816,453
839,470


Capital and reserves
  

Called up share capital 
 16 
21,271
21,271

Share premium account
 17 
241,992
241,992

Profit and loss account
 17 
553,190
576,207

  
816,453
839,470


The financial statements were approved and authorised for issue by the board and were signed on its behalf by: 


................................................
C J Green
Director
Date: 13 June 2025

The notes on pages 11 to 24 form part of these financial statements.

Page 9

 
TETRA TECH UK HOLDINGS LIMITED
 

STATEMENT OF CHANGES IN EQUITY
FOR THE YEAR ENDED 30 SEPTEMBER 2024


Called up share capital
Share premium account
Profit and loss account
Total equity

£000
£000
£000
£000


At 1 October 2022
21,264
127,999
6,166
155,429


Comprehensive income for the year

Profit for the year
-
-
9,541
9,541

Dividends: Equity capital
-
-
(39,500)
(39,500)

Shares issued during the year
7
713,993
-
714,000

Capital reduction
-
(600,000)
600,000
-



At 1 October 2023
21,271
241,992
576,207
839,470


Comprehensive income for the year

Profit for the year
-
-
81,063
81,063

Dividends: Equity capital
-
-
(104,080)
(104,080)


At 30 September 2024
21,271
241,992
553,190
816,453


The notes on pages 11 to 24 form part of these financial statements.

Page 10

 
TETRA TECH UK HOLDINGS LIMITED
 

 
NOTES TO THE FINANCIAL STATEMENTS
FOR THE YEAR ENDED 30 SEPTEMBER 2024

1.


General information

The Company is an intermediate holding company in the Tetra Tech Inc. group of companies. The Company is a private company limited by shares incorporated in England and Wales under the Companies Act 2006. The address of the registered office is given on the Company Information page and the nature of the Company’s operations and principal activities are given in the Strategic report and the Directors’ report. 

2.Accounting policies

 
2.1

Basis of preparation of financial statements

The financial statements have been prepared under the historical cost convention unless otherwise specified within these accounting policies and in accordance with Financial Reporting Standard 102, the Financial Reporting Standard applicable in the UK and the Republic of Ireland (FRS 102) and the Companies Act 2006.
The directors have a reasonable expectation that the Company has adequate resource to continue in operational existence for at least 12 months from the date of approval of the financial statements. Thus the directors continue to adopt the going concern basis of accounting in preparing the financial statements. 
The preparation of financial statements in compliance with FRS 102 requires the use of certain critical accounting estimates. It also requires management to exercise judgment in applying the Company's accounting policies (see note 3).
The following principal accounting policies have been applied:

 
2.2

Financial Reporting Standard 102 - reduced disclosure exemptions

The Company has taken advantage of the following disclosure exemptions in preparing these financial statements, as permitted by the FRS 102 "The Financial Reporting Standard applicable in the UK and Republic of Ireland":
the requirements of Section 7 Statement of Cash Flows;
the requirements of Section 3 Financial Statement Presentation paragraph 3.17(d);
the requirements of Section 11 Financial Instruments paragraphs 11.42, 11.44 to 11.45, 11.47, 11.48(a)(iii), 11.48(a)(iv), 11.48(b) and 11.48(c);
the requirements of Section 12 Other Financial Instruments paragraphs 12.26 to 12.27, 12.29(a), 12.29(b) and 12.29A;
the requirements of Section 33 Related Party Disclosures paragraph 33.7.

This information is included in the consolidated financial statements of Tetra Tech, Inc. as at 30 September 2024 and these financial statements may be obtained from their website at www.tetratech.com.

 
2.3

Exemption from preparing consolidated financial statements

The Company is a parent company that is also a subsidiary included in the consolidated financial statements of a larger group by a parent undertaking established under the law of a state other than the United Kingdom and is therefore exempt from the requirement to prepare consolidated financial statements under section 401 of the Companies Act 2006.

Page 11

 
TETRA TECH UK HOLDINGS LIMITED
 

 
NOTES TO THE FINANCIAL STATEMENTS
FOR THE YEAR ENDED 30 SEPTEMBER 2024

2.Accounting policies (continued)

 
2.4

Foreign currency translation

Functional and presentation currency

The Company's functional and presentational currency is GBP.

Transactions and balances

Foreign currency transactions are translated into the functional currency using the spot exchange rates at the dates of the transactions.

At each period end foreign currency monetary items are translated using the closing rate. Non-monetary items measured at historical cost are translated using the exchange rate at the date of the transaction and non-monetary items measured at fair value are measured using the exchange rate when fair value was determined.

Foreign exchange gains and losses resulting from the settlement of transactions and from the translation at period-end exchange rates of monetary assets and liabilities denominated in foreign currencies are recognised in profit or loss except when deferred in other comprehensive income as qualifying cash flow hedges.

Foreign exchange gains and losses that relate to borrowings and cash and cash equivalents are presented in the Statement of comprehensive income within 'finance income or costs'. All other foreign exchange gains and losses are presented in profit or loss within 'other operating income'.

 
2.5

Valuation of investments

Investments in subsidiaries are measured at cost less accumulated impairment.

 
2.6

Debtors

Short-term debtors are measured at transaction price, less any impairment. Loans receivable are measured initially at fair value, net of transaction costs, and are measured subsequently at amortised cost using the effective interest method, less any impairment.

 
2.7

Creditors

Short-term creditors are measured at the transaction price. Other financial liabilities, including bank loans, are measured initially at fair value, net of transaction costs, and are measured subsequently at amortised cost using the effective interest method.

Page 12

 
TETRA TECH UK HOLDINGS LIMITED
 

 
NOTES TO THE FINANCIAL STATEMENTS
FOR THE YEAR ENDED 30 SEPTEMBER 2024

2.Accounting policies (continued)

 
2.8

Financial instruments

The Company has elected to apply the provisions of Section 11 “Basic Financial Instruments” of FRS 102 to all of its financial instruments.

Basic financial assets

Basic financial assets, which include trade and other debtors, cash and bank balances, are initially measured at their transaction price (adjusted for transaction costs except in the initial measurement of financial assets that are subsequently measured at fair value through profit and loss) and are subsequently carried at their amortised cost using the effective interest method, less any provision for impairment, unless the arrangement constitutes a financing transaction, where the transaction is measured at the present value of the future receipts discounted at a market rate of interest.

Discounting is omitted where the effect of discounting is immaterial. The Company's cash and cash equivalents, trade and most other debtors due with the operating cycle fall into this category of financial instruments.

 
2.9

Interest income

Interest income is recognised in profit or loss using the effective interest method.

 
2.10

Taxation

Tax is recognised in profit or loss except that a charge attributable to an item of income and expense recognised as other comprehensive income or to an item recognised directly in equity is also recognised in other comprehensive income or directly in equity respectively.

The current income tax charge is calculated on the basis of tax rates and laws that have been enacted or substantively enacted by the balance sheet date in the countries where the Company operates and generates income.


 
2.11

Finance costs

Finance costs are charged to profit or loss over the term of the debt using the effective interest method so that the amount charged is at a constant rate on the carrying amount. Issue costs are initially recognised as a reduction in the proceeds of the associated capital instrument.

 
2.12

Cash and cash equivalents

Cash is represented by cash in hand and deposits with financial institutions repayable without penalty on notice of not more than 24 hours. Cash equivalents are highly liquid investments that mature in no more than three months from the date of acquisition and that are readily convertible to known amounts of cash with insignificant risk of change in value.

 
2.13

Dividends

Equity dividends are recognised when they become legally payable. Interim equity dividends are recognised when paid. Final equity dividends are recognised when approved by the shareholders at an annual general meeting.

Page 13

 
TETRA TECH UK HOLDINGS LIMITED
 

 
NOTES TO THE FINANCIAL STATEMENTS
FOR THE YEAR ENDED 30 SEPTEMBER 2024

3.


Critical accounting judgements and key sources of estimation uncertainty

The directors are required to make judgements, estimates and assumptions about the carrying amount of assets and liabilities that are not readily apparent from other sources. The estimates and underlying assumptions are reviewed on an ongoing basis. During the year there were no critical accounting judgements made by the directors.
Key sources of estimation uncertainty
Impairment of investments
The directors deemed it necessary to determine whether there are indicators of impairment of the Company’s fixed asset investments. Factors taken into consideration in reaching such a decision include the economic viability and expected future financial performance of the asset and the discount rate. No impairment was required to be recognised as a consequence of this review as at 30 September 2024.
Recoverability of the amounts owed by group undertakings
The directors deemed it necessary to determine whether there are indicators of impairment of the Company’s amounts receivable from group undertakings. Factors taken into consideration in reaching such a decision include the economic viability and expected future financial performance of the debtor company and the current and forecast financial position of the debtor company. The directors have concluded that all such amounts are expected to be fully recoverable so no allowance for bad debts has been made during the reporting period. No reasonably possible movements in estimates of which the Directors are aware would lead to material changes in valuations of investments or intercompany amounts.


4.


Operating profit/(loss)

The operating profit/(loss) is stated after crediting/(charging):

2024
2023
£000
£000

Research and Development Expenditure Credit
349
-

Exchange differences
(26)
-


5.


Auditor's remuneration

During the year, the Company obtained the following services from the Company's auditor and its associates:


2024
2023
£000
£000

Fees payable to the Company's auditor and its associates for the audit of the Company's financial statements
8
7

The audit fee has been borne by another company within the group and not recharged.

Page 14

 
TETRA TECH UK HOLDINGS LIMITED
 

 
NOTES TO THE FINANCIAL STATEMENTS
FOR THE YEAR ENDED 30 SEPTEMBER 2024

6.


Director's emoluments and employees

The directors received no emoluments in respect of their services to the Company during the year (2023 - £Nil).
The average monthly number of directors during the year was 3 (2023 - 3). There were no employees during the year (2023- Nil).






7.


Income from investments

2024
2023
£000
£000



(Loss)/income from fixed asset investments
(86)
7,829

Dividends received from unlisted investments
77,804
237

77,718
8,066

Income from fixed asset investments relates to the share of profits from Hoare Lea LLP allocated to the Company (the loss in 2024 is an adjustment to income previously recognised).


8.


Interest receivable

2024
2023
£000
£000


External interest receivable
261
421

Intercompany interest receivable
4,298
3,803

4,559
4,224


9.


Interest payable and similar expenses

2024
2023
£000
£000


Other interest payable
314
638


10.


Taxation


2024
2023
£000
£000

Corporation tax


Current tax on profits for the year
1,222
2,109



Tax on profit
1,222
2,109
Page 15

 
TETRA TECH UK HOLDINGS LIMITED
 

 
NOTES TO THE FINANCIAL STATEMENTS
FOR THE YEAR ENDED 30 SEPTEMBER 2024
 
10.Taxation (continued)


Factors affecting tax charge for the year

The tax assessed for the year is lower than (2023 - lower than) the standard rate of corporation tax in the UK of 25% (2023 - 22.01%). The differences are explained below:

2024
2023
£000
£000


Profit on ordinary activities before tax
82,285
11,650


Profit on ordinary activities multiplied by standard rate of corporation tax in the UK of 25% (2023 - 22.01%)
20,571
2,564

Effects of:


Expenses not deductible for tax purposes, other than goodwill amortisation and impairment
79
140

Non-taxable income
(19,517)
(52)

Adjustment from previous periods
53
(543)

Overseas withholding tax not recoverable
36
-

Total tax charge for the year
1,222
2,109


Factors that may affect future tax charges

The Company is within the scope of the OECD Pillar Two model rules as it is part of a large group. The legislation was enacted in the UK in July 2023 and will come into effect for the Company from 30 September 2024. The Company does not expect to be affected by the rules as the effective tax rate should exceed the 15% minimum rate.


11.


Dividends

2024
2023
£000
£000


Ordinary dividends paid
104,080
39,500

Page 16

 
TETRA TECH UK HOLDINGS LIMITED
 

 
NOTES TO THE FINANCIAL STATEMENTS
FOR THE YEAR ENDED 30 SEPTEMBER 2024

12.


Fixed asset investments





Investments in subsidiary companies

£000



Cost or valuation


At 1 October 2023
786,733


Revaluations
(408)



At 30 September 2024
786,325




Page 17

 
TETRA TECH UK HOLDINGS LIMITED
 

 
NOTES TO THE FINANCIAL STATEMENTS
FOR THE YEAR ENDED 30 SEPTEMBER 2024

Subsidiary undertakings


At 30 September 2024 the Company had the following wholly owned subsidiary undertakings. Shares held directly by the Company are marked with an asterisk, the rest are held via subsidiary undertakings. The principal activity of the majority of the trading subsidiaries is the provision of consulting services.

Name

Country of incorporation

Registered address

*Tetra Tech UK Limited
UK
1 Northfield Road, Reading, Berkshire, RG1 8AH
Tetra Tech International Development Europe Limited
UK
1 Northfield Road, Reading, Berkshire, RG1 8AH
Tetra Tech International Development Limited
UK
1 Northfield Road, Reading, Berkshire, RG1 8AH
Coffey International Development Lanka (Private) Limited
Sri Lanka
47 Alexandra Place, Coilombo 07
Tetra Tech-Coffey Nigeria Limited
Nigeria
12 Usuma Street, Maitama, Abuja
Tetra Tech International Development LLC
Ukraine
14A, Ihorivska Street, Kyiv, 04070, Ukraine
Tetra Tech International Development BV
Netherlands
Elektronicaweg 2, 2628XG, Delft
Tetra Tech International Development Projects Limited
UK
1 Northfield Road, Reading, Berkshire, RG1 8AH
Africa Infrastructure Technical Services
South Africa
177 Dyer Street, Hillcrest Office Prk, Lynwood, Pretoria 0075
WYG Advisory Services (Proprietary) Limited
South Africa
Block G, 333 Grosvenor Street, Hatfields Gardens, Pretoria 0083
WYG Projects Uganda Limited
Uganda
Plot 91 Kira Road, Kamwokya, PO Box 73331, Kampala
Tetra Tech International Development Sp z.o.o
Poland
ul. Krucza 16/22, 00-526,Warszawa
Coffey Geotechnics Limited
UK
1 Northfield Road, Reading, Berkshire, RG1 8AH
Piteau Associates UK Limited
UK
Cannon Court West, Abbey Lawn, Shrewsbury SY2 5DE
NDY Consulting Limited
UK
1 Angel Court, London, EC2R 7HJ
NDY Consulting (Ireland) Limited
Ireland
Fitzwilliam Hall, Fitzwilliam Place, Dublin D02 T292
*Hoare Lea LLP
UK
155 Aztec West, Almondsbury, Bristol, BS32 4UB
Hoare Lea Holdings Limited
UK
155 Aztec West, Almondsbury, Bristol, BS32 4UB
Hoare Lea Fire Limited (formerly Hoare Lea and Partners Limited)
UK
155 Aztec West, Almondsbury, Bristol, BS32 4UB
Hoare Lea Europe Limited
UK
155 Aztec West, Almondsbury, Bristol, BS32 4UB
Hoare Lea Middle East & Africa Limited
UK
155 Aztec West, Almondsbury, Bristol, BS32 4UB
Hoare Lea Asia Limited
UK
155 Aztec West, Almondsbury, Bristol, BS32 4UB
Hoare Lea (CI) Limited
Jersey
9 Bond Street, St Helier, Jersey, JE2 3NP
Hoare Lea North America Limited
UK
155 Aztec West, Almondsbury, Bristol, BS32 4UB
Hoare Lea UK Limited
UK
155 Aztec West, Almondsbury, Bristol, BS32 4UB
Hoare Lea Expert Services Middle East LLC
UAE
Office 12 Bldg 49, Al Bateen Airport, Al Mutrafah St, PO Box 79173, Abu Dhabi
Hoare Lea Ireland Limited
Ireland
Trinity House, Charleston Road, Ranelagh, Dublin 6, DO6C8X4
Page 18

 
TETRA TECH UK HOLDINGS LIMITED
 

 
NOTES TO THE FINANCIAL STATEMENTS
FOR THE YEAR ENDED 30 SEPTEMBER 2024
Subsidiary undertakings (continued)


Name

Registered office

Principal activity

*Tetra Tech UK Consulting Group Limited
UK
3 Sovereign Square,  Leeds, England, LS1 4ER
Tetra Tech Group Limited
UK
3 Sovereign Square,  Leeds, England, LS1 4ER
Tetra Tech Limited
UK
3 Sovereign Square,  Leeds, England, LS1 4ER
Tetra Tech Consulting (NI) Limited
Northern Ireland
1 Locksley Business Park, <ontgomery Road, Belfast BT6 9UP
Tetra Tech Consulting Ireland Limited
Ireland
The Hatch Lab, M11 Business Campus, Innovation House, Gorey, Wexford, y25 A8H2
Tetra Tech Environment Planning Transport Limited
UK
3 Sovereign Square,  Leeds, England, LS1 4ER
Tetra Tech Management Services Limited
UK
3 Sovereign Square,  Leeds, England, LS1 4ER
Tetra Tech Planning Limited
UK
3 Sovereign Square,  Leeds, England, LS1 4ER
North Associates (Cumbria) Limited
UK
3 Sovereign Square,  Leeds, England, LS1 4ER
Taylor & Hardy Limited
UK
3 Sovereign Square,  Leeds, England, LS1 4ER
 Neil Allen Associates Limited
UK
3 Sovereign Square,  Leeds, England, LS1 4ER
Tetra Tech Environmental & Planning (Northern Ireland) Limited
Northern Ireland
1 Locksley Business Park, <ontgomery Road, Belfast BT6 9UP
Tetra Tech Management Services (Northern Ireland) Limited
Northern Ireland
1 Locksley Business Park, <ontgomery Road, Belfast BT6 9UP
Alliance Environment and Planning Limited
UK
3 Sovereign Square,  Leeds, England, LS1 4ER
FMW Consultancy Limited
UK
3 Sovereign Square,  Leeds, England, LS1 4ER
Signet Planning Limited
UK
3 Sovereign Square,  Leeds, England, LS1 4ER
Trench Farrow Limited
UK
3 Sovereign Square,  Leeds, England, LS1 4ER
White Young Green International Limited
UK
3 Sovereign Square,  Leeds, England, LS1 4ER
White Young Green Limited
UK
3 Sovereign Square,  Leeds, England, LS1 4ER
WYG Consulting Limited
UK
3 Sovereign Square,  Leeds, England, LS1 4ER
WYG Advisory Limited
UK
3 Sovereign Square,  Leeds, England, LS1 4ER
Cumbria Nuclear Solutions Limited
UK
Pillar House, Westlakes Science & Technology Park, Moor Row, Cumbria, CA24 3HW
Nuclear Decommissioning Limited
UK
3 Sovereign Square,  Leeds, England, LS1 4ER
WYG Engineering (Northern Ireland) Limited
Northern Ireland
c/o A&L Goodbody Northern Ireland LLP, 42-46 Fountain Street, Belfast, BT1 5EB
Piteau Associates South Africa (Pty)
South Africa
Suite 6, Ground Floor, 114 Oxford Rd, Houghton Estate, Johannesburg, 2198
*R P S Group Limited
UK
101 Park Drive, Milton Park, Abingdon, Oxfordshire OX14 4RY
Page 19

 
TETRA TECH UK HOLDINGS LIMITED
 

 
NOTES TO THE FINANCIAL STATEMENTS
FOR THE YEAR ENDED 30 SEPTEMBER 2024
Subsidiary undertakings (continued)


Name

Registered office

Principal activity

ECL DM Pty Ltd
Australia
Level 8, 31 Duncan Street, Fortitude Valley, Queensland 4006
ECL Drilling Management Pty Limited
Australia
Level 8, 31 Duncan Street, Fortitude Valley, Queensland 4006
ECL Pty Ltd
Australia
Level 8, 31 Duncan Street, Fortitude Valley, Queensland 4006
Everything Infrastructure Consulting Pty Ltd
Australia
Level 8, 31 Duncan Street, Fortitude Valley, Queensland 4006
Everything Infrastructure Group Pty Ltd
Australia
Level 8, 31 Duncan Street, Fortitude Valley, Queensland 4006
Intelligent Infrastructure Pty Ltd
Australia
Level 8, 31 Duncan Street, Fortitude Valley, Queensland 4006
RPS APASA Pty Ltd
Australia
Level 8, 31 Duncan Street, Fortitude Valley, Queensland 4006
RPS Advisory Services Pty Ltd
Australia
Level 8, 31 Duncan Street, Fortitude Valley, Queensland 4006
RPS Aquaterra Pty Ltd
Australia
Level 8, 31 Duncan Street, Fortitude Valley, Queensland 4006
RPS Australia East Pty Ltd
Australia
Level 8, 31 Duncan Street, Fortitude Valley, Queensland 4006
RPS Australia West Pty Ltd
Australia
Level 8, 31 Duncan Street, Fortitude Valley, Queensland 4006
RPS Consultants Pty Ltd
Australia
Level 8, 31 Duncan Street, Fortitude Valley, Queensland 4006
RPS ECOS Pty Ltd
Australia
Level 8, 31 Duncan Street, Fortitude Valley, Queensland 4006
RPS Energy Pty Ltd
Australia
Level 8, 31 Duncan Street, Fortitude Valley, Queensland 4006
RPS Energy Services Pty Ltd
Australia
Level 8, 31 Duncan Street, Fortitude Valley, Queensland 4006
RPS Environment and Planning Pty Ltd
Australia
Level 8, 31 Duncan Street, Fortitude Valley, Queensland 4006
RPS Harper Somers O’Sullivan Pty Ltd
Australia
Level 8, 31 Duncan Street, Fortitude Valley, Queensland 4006
RPS Manidis Roberts Pty Ltd
Australia
Level 8, 31 Duncan Street, Fortitude Valley, Queensland 4006
RPS AAP Consulting Pty Ltd
Australia
Level 8, 31 Duncan Street, Fortitude Valley, Queensland 4006
Rudall Blanchard Associates Pty Limited
UK
101 Park Drive, Milton Park, Abingdon, Oxfordshire OX14 4RY
Troy Ikoda Australasia Pty Ltd
UK
101 Park Drive, Milton Park, Abingdon, Oxfordshire OX14 4RY
Whelans Corporation Pty Limited
UK
101 Park Drive, Milton Park, Abingdon, Oxfordshire OX14 4RY
Whelans Insites Pty Limited
UK
101 Park Drive, Milton Park, Abingdon, Oxfordshire OX14 4RY
Canadian GaiaTech, B.C. ULC
UK
101 Park Drive, Milton Park, Abingdon, Oxfordshire OX14 4RY
RPS Canada Ltd
UK
101 Park Drive, Milton Park, Abingdon, Oxfordshire OX14 4RY
RPS Energy Canada Ltd
UK
101 Park Drive, Milton Park, Abingdon, Oxfordshire OX14 4RY
Aquaterra International Ltd
UK
101 Park Drive, Milton Park, Abingdon, Oxfordshire OX14 4RY
Aquaterra UK Limited
UK
101 Park Drive, Milton Park, Abingdon, Oxfordshire OX14 4RY
Page 20

 
TETRA TECH UK HOLDINGS LIMITED
 

 
NOTES TO THE FINANCIAL STATEMENTS
FOR THE YEAR ENDED 30 SEPTEMBER 2024
Subsidiary undertakings (continued)


Name

Registered office

Principal activity

ECL Group Limited
UK
101 Park Drive, Milton Park, Abingdon, Oxfordshire OX14 4RY
ECL Resources Management Limited
UK
101 Park Drive, Milton Park, Abingdon, Oxfordshire OX14 4RY
ECL Technology Limited
UK
101 Park Drive, Milton Park, Abingdon, Oxfordshire OX14 4RY
Energy Innovations Limited
UK
101 Park Drive, Milton Park, Abingdon, Oxfordshire OX14 4RY
Exploration Consultants Limited
UK
101 Park Drive, Milton Park, Abingdon, Oxfordshire OX14 4RY
Geocon Group Services Limited
UK
101 Park Drive, Milton Park, Abingdon, Oxfordshire OX14 4RY
Geophysical Safety Resources Limited
UK
101 Park Drive, Milton Park, Abingdon, Oxfordshire OX14 4RY
Hydrosearch Associates Limited
UK
101 Park Drive, Milton Park, Abingdon, Oxfordshire OX14 4RY
Knowledge Reservoir (UK) Limited
UK
101 Park Drive, Milton Park, Abingdon, Oxfordshire OX14 4RY
Nautilus Limited
UK
101 Park Drive, Milton Park, Abingdon, Oxfordshire OX14 4RY
Quad Engineering Limited
UK
101 Park Drive, Milton Park, Abingdon, Oxfordshire OX14 4RY
RPS Consultants Limited
UK
101 Park Drive, Milton Park, Abingdon, Oxfordshire OX14 4RY
RPS Consulting Services Limited
UK
101 Park Drive, Milton Park, Abingdon, Oxfordshire OX14 4RY
Tetra Tech RPS Energy Consultants Limited
UK
101 Park Drive, Milton Park, Abingdon, Oxfordshire OX14 4RY
Tetra Tech RPS Energy Limited (formerly RPS Energy Limited)
UK
101 Park Drive, Milton Park, Abingdon, Oxfordshire OX14 4RY
RPS Energy Services Limited
UK
101 Park Drive, Milton Park, Abingdon, Oxfordshire OX14 4RY
RPS Environmental Management Limited
UK
101 Park Drive, Milton Park, Abingdon, Oxfordshire OX14 4RY
RPS Group US Holdings Limited
UK
101 Park Drive, Milton Park, Abingdon, Oxfordshire OX14 4RY
RPS Heritage Holdings Limited
UK
101 Park Drive, Milton Park, Abingdon, Oxfordshire OX14 4RY
RPS Heritage Limited
UK
101 Park Drive, Milton Park, Abingdon, Oxfordshire OX14 4RY
RPS Laboratories Limited
UK
101 Park Drive, Milton Park, Abingdon, Oxfordshire OX14 4RY
RPS Mountainheath Limited
UK
101 Park Drive, Milton Park, Abingdon, Oxfordshire OX14 4RY
RPS Occupational Health Limited
UK
101 Park Drive, Milton Park, Abingdon, Oxfordshire OX14 4RY
RPS Planning & Development Limited
UK
101 Park Drive, Milton Park, Abingdon, Oxfordshire OX14 4RY
RPS Timetrax Limited
UK
101 Park Drive, Milton Park, Abingdon, Oxfordshire OX14 4RY
RPS Trustees Limited
UK
101 Park Drive, Milton Park, Abingdon, Oxfordshire OX14 4RY
RPS US Holdings Limited
UK
101 Park Drive, Milton Park, Abingdon, Oxfordshire OX14 4RY
Rudall Blanchard Associates Group Limited
UK
101 Park Drive, Milton Park, Abingdon, Oxfordshire OX14 4RY
Page 21

 
TETRA TECH UK HOLDINGS LIMITED
 

 
NOTES TO THE FINANCIAL STATEMENTS
FOR THE YEAR ENDED 30 SEPTEMBER 2024
Subsidiary undertakings (continued)


Name

Registered office

Principal activity

Scott Pickford Limited
UK
101 Park Drive, Milton Park, Abingdon, Oxfordshire OX14 4RY
Troy Ikoda Limited
UK
101 Park Drive, Milton Park, Abingdon, Oxfordshire OX14 4RY
Troy-Ikoda Management Limited
UK
101 Park Drive, Milton Park, Abingdon, Oxfordshire OX14 4RY
X-IPEC Limited
UK
101 Park Drive, Milton Park, Abingdon, Oxfordshire OX14 4RY
Tetra Tech RPS Energy GmbH (formerly Metier Academy GmbH)
Germany
Gashaftsanschrift, Marketstrasse 4460388 Frankfurt am Main
Geocon Asia Limited
Gibraltar
Line Group Limited, 57/63 Line Wall Road
RPS Consulting Engineers Limited
Ireland
West Pier Business Campus, Old Dunleary Road, Dunlaoghaire, Co Dublin
RPS Engineering Services Limited
Ireland
West Pier Business Campus, Old Dunleary Road, Dunlaoghaire, Co Dublin
RPS Environmental Consultancy Limited
Ireland
West Pier Business Campus, Old Dunleary Road, Dunlaoghaire, Co Dublin
RPS Group Limited
Ireland
West Pier Business Campus, Old Dunleary Road, Dunlaoghaire, Co Dublin
RPS Properties Limited
Ireland
West Pier Business Campus, Old Dunleary Road, Dunlaoghaire, Co Dublin
Cambrian Consultants Asia Sdn. Bhd
Malaysia
Level 11-2 Faber Imperial Court, Jalan Sultan Ismail 50250, Kuala Lumpur
RPS Consultants Sdn Bhd
Malaysia
2nd floor, 60, 62 & 64 Jalan SS 2/21, Damansara Jaya, 47400 Petaling Jaya, Selangor
Aquaterra East Asia LLC
Mongolia
701 San Business Centre, 8th Khoroo, Sukhbaatar, Ulaanbaatar
RPS advies-en ingenieursbureau BV
Netherlands
Elektronicaweg 2, 2628 XG Delft
RPS Analyse BV
Netherlands
Minervum 7002, 4817, ZL Breda
RPS BV
Netherlands
Elektronicaweg 2, 2628 XG Delft
RPS Detachering BV
Netherlands
Elektronicaweg 2, 2628 XG Delft
RPS Consultants NZ Limited
New Zealand
50 Customhouse Quay, Wellington Central, Wellington, 6011
RPS Ireland Limited
Northern Ireland
Elmwood House, 74 Boucher Road, Belfast, BT12 6RZ
Metier AS
Norway
Hovfaret 10, 0275 Oslo
Metier Group AS
Norway
Hovfaret 10, 0275 Oslo
Metier Resources AS
Norway
Hovfaret 10, 0275 Oslo
Reservoir Imaging Limited
UK
Atholl Exchange, 1st Floor, 6 Canning Street, Edinburgh, EH3 8EG
RPS Health in Business Limited
UK
Unit 1, Ratho Park, Station Road, Edinburgh, EH28 8QQ
RPS Advisory PTE Limited
Singapore
100 Tras Street, #16-01, 100 AM, 079027
Metier AB
Sweden
Gyllenstiernsgatan 12, 115 26, Stockholm
Page 22

 
TETRA TECH UK HOLDINGS LIMITED
 

 
NOTES TO THE FINANCIAL STATEMENTS
FOR THE YEAR ENDED 30 SEPTEMBER 2024
Subsidiary undertakings (continued)


Name

Registered office

Principal activity

Houston Geoscan Inc
USA
575 North Dairy Ashford Road, Suite 700, Houston, Texas 77070


13.


Debtors

2024
2023
£000
£000


Amounts owed by group undertakings
46,222
90,784

Tax recoverable
3,188
-



14.


Cash and cash equivalents

2024
2023
£000
£000

Cash at bank and in hand
8,637
13,741



15.


Creditors: Amounts falling due within one year

2024
2023
£000
£000

Amounts owed to group undertakings
27,919
24,972

Corporation tax
-
615

Other creditors
-
26,201

27,919
51,788



16.


Share capital

2024
2023
£000
£000
Allotted, called up and fully paid



2,127,068,493 (2023 - 2,127,068,493) Ordinary shares of £0.01 each
21,271
21,271


Page 23

 
TETRA TECH UK HOLDINGS LIMITED
 

 
NOTES TO THE FINANCIAL STATEMENTS
FOR THE YEAR ENDED 30 SEPTEMBER 2024

17.


Reserves

Share premium account

The share premium reserve relates to amounts paid for share capital in excess of nominal value.

Profit and loss account

The profit and loss account represents cumulative profits and losses net of dividends paid and other adjustments.


18.


Related party transactions

The Company has taken advantage of the exemption conferred by FRS 102 s.33.1A not to disclose transactions with other wholly owned members of the group.
There were no other related party transactions in the year to disclose.


19.


Ultimate parent undertaking and controlling party

The Company is a subsidiary undertaking of Tetra Tech, Inc., a company incorporated in the USA. The ultimate controlling party is Tetra Tech, Inc., by virtue of its 100% ownership of the Company.
The largest group in which the results of the Company are consolidated is that headed by Tetra Tech, Inc., which is incorporated in the United States of America and registered on NASDAQ with registered address 3475 East Foothill Boulevard, Pasadena, Caifornia 91107-6024. The financial statements of Tetra Tech Inc., are publicly available at https://investor.tetratech .com/home/default .aspx


20.


Post balance sheet events

On the year end date, R P S Group Limited, a wholly owned subsidiary of the Company, sold its investment in its Australian sub-group to a fellow subsidiary within the Tetra Tech, Inc. group. The Company received a dividend after the year end date of £173,763,000 from R P S Group Limited as a result of this disposal and paid a dividend of the same amount. As detailed in note 3, no impairment of the investment in the RPS Group was requird as a result of this transaction as the recoverable amount exceeded the carrying value. A further impairment review will be undertaken at the end of the next financial year.
On 10 December 2024 the Company extended the maturity date on its loan note to R P S Group Limited from 29 September 2025 to 1 October 2026.
Since the year end the Company has received dividends totalling £174,359,000 and paid dividends of £221,359,000.
On 24 March 2025 the Company acquired 100% of the share capital of Carron + Walsh Construction Consultants Limited, a company registered in the Republic of Ireland which delivers project and cost management solutions for large-scale commercial, life science, residential and infrastructure programs across Europe. The initial consideration was €5,250,000.

Page 24