Caseware UK (AP4) 2025.0.111 2025.0.111 2025-12-312025-12-31true2024-12-18falseHolding Company00falsefalse 16143570 2024-12-17 16143570 2024-12-18 2025-12-31 16143570 2024-01-01 2024-12-17 16143570 2025-12-31 16143570 c:CompanySecretary1 2024-12-18 2025-12-31 16143570 c:Director1 2024-12-18 2025-12-31 16143570 c:Director1 2025-12-31 16143570 c:Director2 2024-12-18 2025-12-31 16143570 c:Director2 2025-12-31 16143570 c:RegisteredOffice 2024-12-18 2025-12-31 16143570 d:CurrentFinancialInstruments 2025-12-31 16143570 d:Non-currentFinancialInstruments 2025-12-31 16143570 d:CurrentFinancialInstruments d:WithinOneYear 2025-12-31 16143570 d:Non-currentFinancialInstruments d:AfterOneYear 2025-12-31 16143570 d:ShareCapital 2025-12-31 16143570 d:RetainedEarningsAccumulatedLosses 2024-12-18 2025-12-31 16143570 d:RetainedEarningsAccumulatedLosses 2025-12-31 16143570 c:OrdinaryShareClass1 2024-12-18 2025-12-31 16143570 c:OrdinaryShareClass1 2025-12-31 16143570 c:FRS102 2024-12-18 2025-12-31 16143570 c:Audited 2024-12-18 2025-12-31 16143570 c:FullAccounts 2024-12-18 2025-12-31 16143570 c:PrivateLimitedCompanyLtd 2024-12-18 2025-12-31 16143570 d:Subsidiary1 2024-12-18 2025-12-31 16143570 d:Subsidiary1 1 2024-12-18 2025-12-31 16143570 d:Subsidiary2 2024-12-18 2025-12-31 16143570 d:Subsidiary2 1 2024-12-18 2025-12-31 16143570 d:Subsidiary3 2024-12-18 2025-12-31 16143570 d:Subsidiary3 1 2024-12-18 2025-12-31 16143570 d:Subsidiary4 2024-12-18 2025-12-31 16143570 d:Subsidiary4 1 2024-12-18 2025-12-31 16143570 6 2024-12-18 2025-12-31 16143570 e:PoundSterling 2024-12-18 2025-12-31 iso4217:GBP xbrli:shares xbrli:pure
Registered number: 16143570







ANNUAL REPORT AND FINANCIAL STATEMENTS
FOR THE PERIOD ENDED
31 DECEMBER 2025


ASSYSTEM HOLDING UK
LIMITED




































                                                                                                img064c.png


 


ASSYSTEM HOLDING UK
 
LIMITED
 


 
COMPANY INFORMATION


Directors
D. M. P. Chabert D'Hieres De Seguin De Reynies 
C. O. Jeanneau 




Company secretary
N. Y. Ormerod



Registered number
16143570



Registered office
Assystem First Floor, Parklands 4B
Middlebrook

Bolton

Lancashire

BL6 4SD




Independent auditor
Menzies LLP
Chartered Accountants & Statutory Auditor

2nd Floor, Origin One

108 High Street

Crawley

RH10 1BD





 


ASSYSTEM HOLDING UK
 
LIMITED
 



CONTENTS



Page
Strategic report
1
Directors' report
2 - 3
Independent auditor's report
4 - 7
Statement of income and retained earnings
8
Statement of financial position
9
Notes to the financial statements
10 - 14


 


ASSYSTEM HOLDING UK
 
LIMITED
 


 
STRATEGIC REPORT
FOR THE PERIOD ENDED 31 DECEMBER 2025

Introduction
 
The directors present their Strategic report and the audited financial statements of Assystem Holding UK Limited (the 'Company') for the period ended 31 December 2025.

Business review
 
The Directors report and audited financial statements reflect the performance of the Company.

Principal risks and uncertainties
 
The Company's activity as a holding company exposes it to a number of financial risks, the most significant of which is the possible impairment in the carrying value of its investments. These carrying values are reviewed by management each year and are compared to future discounted cash flows of the relevant investments. Credit risk, cash flow risk and liquidity risk do not represent significant issues as the company does not trade. The Company regularly reviews its financial exposure and seeks to limit the adverse effects on its financial performance by monitoring levels of debt finance and related finance costs.

Financial key performance indicators
 
Given the nature of the business as a holding company, the directors are of the opinion that analysis using numerous key performance indicators is not necessary for an understanding of the development, performance or position of the business.

As a holding company, the value of the investments is ultimately derived from the financial performance and position of the trading subsidiary. 


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





D. M. P. Chabert D'Hieres De Seguin De Reynies
Director

Date: 14 September 2026

Page 1

 


ASSYSTEM HOLDING UK
 
LIMITED
 


 
DIRECTORS' REPORT
FOR THE PERIOD ENDED 31 DECEMBER 2025

The directors present their report and the financial statements for the period ended 31 December 2025.

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; and

∙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 2006. They 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.

Results and dividends

The loss for the period, after taxation, amounted to £781,097.

There were no dividends declared in the period.

Directors

The directors who served during the period were:

D. M. P. Chabert D'Hieres De Seguin De Reynies (appointed 18 December 2024)
C. O. Jeanneau (appointed 18 December 2024)

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, Menzies LLP, will be proposed for reappointment in accordance with section 485 of the Companies Act 2006.

Page 2

 


ASSYSTEM HOLDING UK

LIMITED
 


 
DIRECTORS' REPORT (CONTINUED)
FOR THE PERIOD ENDED 31 DECEMBER 2025

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





D. M. P. Chabert D'Hieres De Seguin De Reynies
Director

Date: 14 September 2026

Assystem First Floor, Parklands 4B
Middlebrook
Bolton
Lancashire
BL6 4SD

Page 3

 


ASSYSTEM HOLDING UK
 
LIMITED
 

img0610.png
 
INDEPENDENT AUDITOR'S REPORT TO THE MEMBERS OF ASSYSTEM HOLDING UK

Opinion


We have audited the financial statements of Assystem Holding UK (the 'Company') for the period ended 31 December 2025, which comprise the Statement of Income and Retained Earnings, the Statement of Financial Position and the related notes, including a summary of significant accounting policies. The 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 31 December 2025 and of its loss for the period 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 Report. Our 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 4

 


ASSYSTEM HOLDING UK

LIMITED


img52eb.png
 
INDEPENDENT AUDITOR'S REPORT TO THE MEMBERS OF ASSYSTEM HOLDING UK (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 period 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' responsibility statement set out on page 2, 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.


Page 5

 


ASSYSTEM HOLDING UK

LIMITED


img6e54.png
 
INDEPENDENT AUDITOR'S REPORT TO THE MEMBERS OF ASSYSTEM HOLDING UK (CONTINUED)

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:

∙The Company is subject to laws and regulations that directly affect the financial statements including financial reporting legislation. We determined that the following laws and regulations were most significant including:

−The Companies Act 2006;
−Financial Reporting Standard 102;
−UK employment legislation;
−UK health and safety legislation; and
−UK General Data Protection Regulations.

∙We assessed the extent of compliance with these laws and regulations as part of our procedures on the related financial statement items.

∙We understood how the the Company is complying with those legal and regulatory frameworks by, making inquiries to management, thoseresponsible for legal and compliance procedures. We corroborated our inquiries through our review of relevant documentation.

∙The engagement partner assessed whether the engagement team collectively had the appropriate competence and capabilities to identify orrecognize non-compliance with laws and regulations. The assessment did not identify any issues in this area.

∙We assessed the susceptibility of the Company financial statements to material misstatement, including how fraud might occur. Audit proceduresperformed by the engagement team included:

−Identifying and assessing the design effectiveness of controls management has in place to prevent and detect fraud;
−Understanding how those charged with governance considered and addressed the potential for override of controls or other inappropriateinfluence over the financial reporting process;
−Challenging assumptions and judgments made by management in its significant accounting estimates; and
−Identifying and testing journal entries, in particular any journal entries posted with unusual account combinations.

∙As a result of the above procedures, we considered the opportunities and incentives that may exist within the organisation for fraud and identified thegreatest potential for fraud in the following areas:

−The application of inappropriate judgements or estimation to manipulate the Company's financial position;
−Posting of unusual journals and complex transactions;
−The use of management override of controls to manipulate results, or to cause the Company to enter into transactions not in its bestinterests.
Page 6

 


ASSYSTEM HOLDING UK

LIMITED


img22d8.png
 
INDEPENDENT AUDITOR'S REPORT TO THE MEMBERS OF ASSYSTEM HOLDING UK (CONTINUED)

Because of the inherent limitations of an audit, there is a risk that we will not detect all irregularities, including those leading to a material misstatementin the financial statements or non-compliance with regulation. This risk increases the more that compliance with a law or regulation is removed fromthe events and transactions reflected in the financial statements, as we will be less likely to become aware of instances of non-compliance. The risk isalso greater regarding irregularities occurring due to fraud rather than error, as fraud involves intentional concealment, forgery, collusion, omission or misrepresentation.


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.


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 2006. Our 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.





Menzies LLP
Chartered Accountants
Statutory Auditor
2nd Floor, Origin One
108 High Street
Crawley
RH10 1BD

14 September 2026
Page 7

 


ASSYSTEM HOLDING UK
 
LIMITED
 


 
STATEMENT OF INCOME AND RETAINED EARNINGS
FOR THE PERIOD ENDED 31 DECEMBER 2025

18 December 2024 to
31 December
2025
Note
£

  

Administrative expenses
  
(254,585)

Operating loss
  
(254,585)

Interest payable and similar expenses
 5 
(526,512)

Loss before tax
  
(781,097)

Tax on loss
  
-

Loss after tax
  
(781,097)

Profit for the period
  
(781,097)

Retained earnings at the end of the period
  
(781,097)

There were no recognised gains and losses for 2025 other than those included in the Statement of income and retained earnings.

The notes on pages 10 to 14 form part of these financial statements.

Page 8

 


ASSYSTEM HOLDING UK
  
LIMITED
REGISTERED NUMBER:16143570



STATEMENT OF FINANCIAL POSITION
AS AT 31 DECEMBER 2025

2025
Note
£

Fixed assets
  

Investments
 6 
17,450,116

  
17,450,116

Current assets
  

Cash at bank and in hand
  
13,077

  
13,077

Creditors: amounts falling due within one year
 7 
(8,759,728)

Net current liabilities
  
 
 
(8,746,651)

Total assets less current liabilities
  
8,703,465

Creditors: amounts falling due after more than one year
  
(9,474,562)

  

Net liabilities
  
(771,097)


Capital and reserves
  

Called up share capital 
 9 
10,000

Profit and loss account
 10 
(781,097)

Total equity
  
(771,097)


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




D. M. P. Chabert D'Hieres De Seguin De Reynies
Director

Date: 14 September 2026

The notes on pages 10 to 14 form part of these financial statements.

Page 9

 


ASSYSTEM HOLDING UK
 
LIMITED
 


 
NOTES TO THE FINANCIAL STATEMENTS
FOR THE PERIOD ENDED 31 DECEMBER 2025

1.


General information

Assystem Holding UK limited is a private company, limited by shares, incorporated in England and Wales. The registered office is disclosed on the company information page, which is also its principal place of business.

The Company's principal activity is that of a holding company.

Assystem Holding UK Limited was incorporated on 18 December 2024, therefore this is its first period trading and there are no comparative figures.

The significant accounting policies applied in the preparation of these financial statements are set out below, These policies have been consistently applied to all years presented unless otherwise stated.

The figures in these financial statements have been prepared in GBP and rounded to the nearest £.

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 and the Companies Act 2006.

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.

The following principal accounting policies have been applied:

  
2.2

Disclosure exemptions

The entity satisfies the criteria of being a qualifying entity as defined in FRS 102. Its financial statements are consolidated into the financial statements of Assystem S.A which can be obtained from 70 Boulevard de Courcelles, 75017, Paris, France. As such, advantage has been taken of the following disclosure exemptions available under paragraph 1.12 of FRS 102:

(a) No cash flow statement has been presented for the Company.
(b) Disclosures in respect of financial instruments have not been presented.
(c) No disclosure has been given for the aggregate remuneration of key management personnel.

 
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 10

 


ASSYSTEM HOLDING UK
 
LIMITED
 


 
NOTES TO THE FINANCIAL STATEMENTS
FOR THE PERIOD ENDED 31 DECEMBER 2025

2.Accounting policies (continued)

 
2.4

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 reporting date in the countries where the Company operates and generates income.

Deferred tax balances are recognised in respect of all timing differences that have originated but not reversed by the reporting date, except that:
∙The recognition of deferred tax assets is limited to the extent that it is probable that they will be recovered against the reversal of deferred tax liabilities or other future taxable profits; and
∙Any deferred tax balances are reversed if and when all conditions for retaining associated tax allowances have been met.

Deferred tax balances are not recognised in respect of permanent differences except in respect of business combinations, when deferred tax is recognised on the differences between the fair values of assets acquired and the future tax deductions available for them and the differences between the fair values of liabilities acquired and the amount that will be assessed for tax. Deferred tax is determined using tax rates and laws that have been enacted or substantively enacted by the reporting date.


 
2.5

Valuation of investments

Investments in subsidiaries are measured at cost less accumulated impairment. 

Cost includes the initial consideration paid together with any contingent consideration (earn-out) where applicable. Contingent consideration is recognised when the conditions for payment are met, or where appropriate, based on management’s best estimate of the amount payable.

The investment is reviewed for impairment at each reporting date and adjusted where necessary.


 
2.6

Financial instruments

The Company only enters into basic financial instrument transactions that result in the recognition of financial assets and liabilities like trade and other debtors and creditors, loans from banks and other third parties, loans to related parties and investments in ordinary shares.

Page 11

 


ASSYSTEM HOLDING UK
 
LIMITED
 


 
NOTES TO THE FINANCIAL STATEMENTS
FOR THE PERIOD ENDED 31 DECEMBER 2025

3.


Auditor's remuneration

During the period, the Company obtained the following services from the Company's auditor:


18 December 2024 to
31 December
2025
£

Fees payable to the Company's auditor for the audit of the Company's financial statements
9,650


4.


Employees




The Company has no employees other than the directors, who did not receive any remuneration.


5.


Interest payable and similar expenses

18 December 2024 to
31 December
2025
£


Group interest payable
526,512

526,512


6.


Fixed asset investments





Investments in subsidiary companies

£



Cost


Additions
17,450,116



At 31 December 2025
17,450,116




Page 12

 


ASSYSTEM HOLDING UK
 
LIMITED
 


 
NOTES TO THE FINANCIAL STATEMENTS
FOR THE PERIOD ENDED 31 DECEMBER 2025

Subsidiary undertakings


The following were subsidiary undertakings of the Company:

Name

Registered office

Class of shares

Holding

Mactech Energy Group Limited
1
Ordinary
100%
ME Project Management Limited*
1
Ordinary
100%
ME Project Payroll Solutions*
1
Ordinary
100%
ME Global Resources Limited*
1
Ordinary
100%

The above subsidiaries of Assystem Holding UK Limited each share the registered office (1) as follows: 23 Claremont Road, Whitley Bay, Tyne and Wear, NE26 3TN

* Represent indirect subsidiaries.

On 22 January 2025, the Company acquired the entire share capital of Mactech Energy Group Limited.


7.


Creditors: Amounts falling due within one year

2025
£

Trade creditors
78

Amounts owed to group undertakings
8,750,000

Accruals and deferred income
9,650

8,759,728



8.


Creditors: Amounts falling due after more than one year

2025
£

Amounts owed to group undertakings
9,474,562

9,474,562


Page 13

 


ASSYSTEM HOLDING UK
 
LIMITED
 


 
NOTES TO THE FINANCIAL STATEMENTS
FOR THE PERIOD ENDED 31 DECEMBER 2025

9.


Called up share capital

2025
£
Allotted, called up and fully paid


10,000 Ordinary shares of £1.00 each
10,000


Ordinary shares carry voting rights and there are equal distributions of dividends or any other distributions, including a distribution arising from a winding up of the Company.

On incorporation, 18 December 2024, 10,000 Ordinary shares were issued at par value of £1.00, for a total consideration of £10,000.


10.


Reserves

Profit and loss account

This reserve represents the sum of the Company’s retained earnings and accumulated losses.


11.


Related party transactions

In accordance with the exemptions by Financial Reporting Standard 102, transactions with Group Companies have not been disclosed in these financial statements.


12.


Controlling party

The immediate parent undertaking is Assystem International.  

The ultimate parent undertaking and the smallest and largest group to consolidate these financial statements is Assystem S.A. Copies of the Assystem S.A. consolidated financial statements can be obtained from www.assystem.com.

The directors believe that there is no ultimate controlling party.

 
Page 14