The directors present their strategic report for the year ended 31 October 2025.
As we close another financial year, we are pleased to report a stable period of growth, innovation, and strategic development. This report outlines our performance across core business areas, highlights major achievements, and sets out our forward-looking strategy as we continue to strengthen our position as a specialist provider of HVAC, electrical, and control systems across multiple regulated and technical sectors.
The 2024/2025 financial year marked a notable improvement in all areas, following a stabilising and successful year, which superseded a more challenging prior year. Our recovery and progression have been driven by both operational resilience and continued investment in innovation, people, and infrastructure.
Our internal JETFLO department which serves the pharmaceutical and logistics sector continues to deliver strong project wins, with increasing client demand for climate-conscious, integrated solutions - an area in which we are well positioned to lead.
Industrial HVAC operations in the water industry reported significant revenue growth and profitability, underpinned by strong project delivery and client confidence.
Our Electrical division, having successfully supported internal projects over several years, has secured some much larger orders under the trading name VTS (Volt Tech Systems). VTS enables us to better serve external clients seeking specialist electrical installations and bespoke control panel manufacturing.
The Control Panel unit has matured into a dedicated operation with growth ambitions of its own, leading to physical expansion of the workshop, in order to meet growing customer demand.
The Service & Maintenance department has once again performed well, highlighting its critical role in our recurring revenue stream.
Our first manufacturing company, ATS Plastics Ltd, has returned to profitability following some challenging prior years, and is on track for continued growth and stability into 2026, .
We continue to work in highly regulated and technically demanding sectors, including logistics, pharmaceuticals, water, and industrial manufacturing. The water sector remains a strategic focus, and we are currently in the early stages of AMP8 (2025–2030), where investment planning is happening. Whilst we still expect the next financial year to be a successful one within the water industry, we shall focus most of our sales efforts on securing more work within the JETFLO department, where high investment is already happening.
Internally, we are also evolving. A core strategic aim has been to move from a founder-led small business model to a professionalised, entrepreneurial mid-sized business, empowering innovation and leadership at every level. Investment in management training and workforce development has supported this transformation.
Outlook
We approach 2025/2026 with confidence. Demand continues to grow across key sectors:
The logistics and warehouse market remains buoyant with newly secured work.
In water, AMP8 is expected to unlock significant capital investment opportunities from 2026 onwards.
While macroeconomic conditions remain uncertain, particularly with respect to cost inflation and supply chain volatility, we have built a resilient operating model supported by:
Sectoral and service diversification
In-house capabilities, including manufacturing and design
A growing, skilled workforce
We will continue to monitor these risks and adjust our strategic approach as necessary. Our medium-term goals remain focused on sustainable growth, value creation, and operational excellence.
Air Technology Systems Limited has made substantial progress this year, improving on revenue, gross and net profit figures. The combination of sector diversification, internal investment, and team development leaves us well placed for long-term success. We would like to thank our employees, clients, suppliers, and partners for their continued trust and contribution to our journey.
The directors consider that the key financial indicators are turnover, gross profit margin and profit before taxation.
The turnover for the group was £15.3m (2024: £14.8m); an increase of 3.4% from the previous year. Gross profit for the group was £6.9m (2024: £6.4m); an increase of 7.8% from the previous year. The gross profit margin for the group was 45.1% compared to 43.5% in the prior year.
Profit before taxation for the group was £1,160,762 compared to £1,049,723 in 2024.
On behalf of the board
The directors present their annual report and financial statements for the year ended 31 October 2025.
The results for the year are set out on page 9.
Ordinary dividends were paid amounting to £410,151. The directors do not recommend payment of a further dividend.
The directors who held office during the year and up to the date of signature of the financial statements were as follows:
Investments of cash surpluses, borrowings and derivative instruments are made through banks and companies which must fulfil credit rating criteria approved by the Board.
All customers who wish to trade on credit terms are subject to credit verification procedures. Trade debtors are monitored on an ongoing basis and provision is made for doubtful debts where necessary.
The company maintains a diversified customer base, which helps mitigate concertation risk.
The directors consider the group's exposure to credit risk to be moderate, and no significant concentrations of credit risk existed at the balance sheet date.
Review of business and future developments have been covered within the strategic report.
In accordance with the company's articles, a resolution proposing that bk plus Audit Limited be reappointed as auditor of the group will be put at a General Meeting.
This report has been prepared in accordance with the provisions applicable to groups and companies entitled to the exemptions of the small companies regime.
United Kingdom company law requires the directors to prepare financial statements for each financial year. Under that law, the directors have elected to prepare the group and parent company financial statements in accordance with United Kingdom Generally Accepted Accounting Practice (United Kingdom Accounting Standards and applicable law). 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 group and parent company, and of the profit or loss of the group for that period.
In preparing these financial statements, the directors are required to:
select suitable accounting policies and then apply them consistently;
make judgements and accounting estimates that are reasonable and prudent;
state whether applicable United Kingdom Accounting Standards have been followed, subject to any material departures disclosed and explained in the financial statements; and
prepare the financial statements on the going concern basis unless it is inappropriate to presume that the group and parent company will continue in business.
The directors are responsible for keeping adequate accounting records that are sufficient to show and explain the group’s and parent company’s transactions and disclose with reasonable accuracy at any time the financial position of the group and parent company, and enable them to ensure that the financial statements comply with the Companies Act 2006. They are also responsible for safeguarding the assets of the group and parent company, and hence for taking reasonable steps for the prevention and detection of fraud and other irregularities.
We have audited the financial statements of Air Technology Systems Limited (the 'parent company') and its subsidiaries (the 'group') for the year ended 31 October 2025 which comprise the group profit and loss account, the group statement of comprehensive income, the group balance sheet, the company balance sheet, the group statement of changes in equity, the company statement of changes in equity, the group statement of cash flows and notes to the financial statements, including 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).
Basis for 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 group's and parent 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
Opinions on other matters prescribed by the Companies Act 2006
In our opinion, based on the work undertaken in the course of our 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.
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.
From the preliminary stages of the audit, we ensure our understanding of the entity is up to date. This includes, but is not limited to, current knowledge of their activities, the business and control environments, and their compliance with the applicable legal and regulatory frameworks. This information supports our risk identification and the subsequent design of audit procedures to mitigate those risks; ensuring that the audit evidence obtained is sufficient and appropriate to support our opinion.
In response to the risks identified, specific to this entity, we designed procedures which included, but were not limited to:
Enquiry of management and those charged with governance around actual and potential litigation and claims;
Reviewing minutes of meetings of those charged with governance, where available;
Reviewing financial statement disclosures and testing to supporting documentation to assess compliance with applicable laws and regulations;
Auditing the risk of management override of controls, including through testing journal entries and other adjustments for appropriateness, and evaluating the business rationale of significant transactions outside the normal course of business.
A further description of our responsibilities is available on the Financial Reporting Council’s website at: https://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 parent 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 parent 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 parent company and the parent company’s members as a body, for our audit work, for this report, or for the opinions we have formed.
As permitted by section 408 of the Companies Act 2006, the company has not presented its own profit and loss account and related notes. The company’s profit for the year was £785,966 (2024 - £660,165 profit).
These financial statements have been prepared in accordance with the provisions relating to medium-sized companies.
Air Technology Systems Limited (“the company”) is a private limited company domiciled and incorporated in England and Wales. The registered office is 8 Aston Court, Bromsgrove Technology Park, Bromsgrove, Worcestershire, B60 3AL.
The group consists of Air Technology Systems Limited and all of its subsidiaries.
These financial statements have been prepared in accordance with FRS 102 “The Financial Reporting Standard applicable in the UK and Republic of Ireland” (“FRS 102”) and the requirements of the Companies Act 2006.
The financial statements are prepared in sterling, which is the functional currency of the company. Monetary amounts in these financial statements are rounded to the nearest £.
The financial statements have been prepared under the historical cost convention. The principal accounting policies adopted are set out below.
In accordance with FRS102, section 1.12(b), the parent company has taken the exemption from preparing a cash flow statement, as its results are included in the consolidated financial statements.
The consolidated group financial statements consist of the financial statements of the parent company Air Technology Systems Limited together with all entities controlled by the parent company (its subsidiaries) and the group’s share of its interests in joint ventures and associates.
All financial statements are made up to 31 October 2025. Where necessary, adjustments are made to the financial statements of subsidiaries to bring the accounting policies used into line with those used by other members of the group.
All intra-group transactions, balances and unrealised gains on transactions between group companies are eliminated on consolidation. Unrealised losses are also eliminated unless the transaction provides evidence of an impairment of the asset transferred.
Subsidiaries are consolidated in the group’s financial statements from the date that control commences until the date that control ceases.
Entities in which the group holds an interest and which are jointly controlled by the group and one or more other venturers under a contractual arrangement are treated as joint ventures. Entities other than subsidiary undertakings or joint ventures, in which the group has a participating interest and over whose operating and financial policies the group exercises a significant influence, are treated as associates.
Investments in joint ventures and associates are carried in the group balance sheet at cost plus post-acquisition changes in the group’s share of the net assets of the entity, less any impairment in value. The carrying values of investments in joint ventures and associates include acquired goodwill.
If the group’s share of losses in a joint venture or associate equals or exceeds its investment in the joint venture or associate, the group does not recognise further losses unless it has incurred obligations to do so or has made payments on behalf of the joint venture or associate.
Unrealised gains arising from transactions with joint ventures and associates are eliminated to the extent of the group’s interest in the entity.
These financial statements are prepared on the going concern basis. The directors have a reasonable expectation that the group will continue in operational existence for the foreseeable future.
Revenue comprises sales of goods or services provided to customers net of value added tax and other sales taxes, less an appropriate deduction for actual and expected returns and discounts. Revenue is recognised when performance obligations are satisfied and the control of goods or services is transferred to the buyer. Where the performance obligation is satisfied over time, revenue is recognised in accordance with its progress towards complete satisfaction of that performance obligation.
When cash inflows are deferred and represent a financing arrangement, the promised consideration is adjusted for the effects of the time value of money, which is recognised as interest income.
Revenue from the sale of goods is recognised when the significant risks and rewards of ownership of the goods have passed to the buyer (usually on dispatch of the goods), the amount of revenue can be measured reliably, it is probable that the economic benefits associated with the transaction will flow to the entity and the costs incurred or to be incurred in respect of the transaction can be measured reliably.
Revenue from contracts for the provision of professional services is recognised by reference to the stage of completion when the stage of completion, costs incurred and costs to complete can be estimated reliably. The stage of completion is calculated by comparing costs incurred, mainly in relation to contractual hourly staff rates and materials, as a proportion of total costs. Where the outcome cannot be estimated reliably, revenue is recognised only to the extent of the expenses recognised that are recoverable.
The gain or loss arising on the disposal of an asset is determined as the difference between the sale proceeds and the carrying value of the asset, and is recognised in the profit and loss account.
Equity investments are measured at fair value through profit or loss, except for those equity investments that are not publicly traded and whose fair value cannot otherwise be measured reliably, which are recognised at cost less impairment until a reliable measure of fair value becomes available.
In the parent company financial statements, investments in subsidiaries, associates and jointly controlled entities are initially measured at cost and subsequently measured at cost less any accumulated impairment losses.
A subsidiary is an entity controlled by the group. Control is the power to govern the financial and operating policies of the entity so as to obtain benefits from its activities.
An associate is an entity, being neither a subsidiary nor a joint venture, in which the company holds a long-term interest and where the company has significant influence. The group considers that it has significant influence where it has the power to participate in the financial and operating decisions of the associate.
Investments in associates are initially recognised at the transaction price (including transaction costs) and are subsequently adjusted to reflect the group’s share of the profit or loss, other comprehensive income and equity of the associate using the equity method. Any difference between the cost of acquisition and the share of the fair value of the net identifiable assets of the associate on acquisition is recognised as goodwill. Any unamortised balance of goodwill is included in the carrying value of the investment in associates.
Losses in excess of the carrying amount of an investment in an associate are recorded as a provision only when the company has incurred legal or constructive obligations or has made payments on behalf of the associate.
In the parent company financial statements, investments in associates are accounted for at cost less impairment.
Entities in which the group has a long term interest and shares control under a contractual arrangement are classified as jointly controlled entities.
At each reporting period end date, the group reviews the carrying amounts of its tangible and intangible assets to determine whether there is any indication that those assets have suffered an impairment loss. If any such indication exists, the recoverable amount of the asset is estimated in order to determine the extent of the impairment loss (if any). Where it is not possible to estimate the recoverable amount of an individual asset, the company estimates the recoverable amount of the cash-generating unit to which the asset belongs. The carrying amount of the investments accounted for using the equity method is tested for impairment as a single asset. Any goodwill included in the carrying amount of the investment is not tested separately for impairment.
Recoverable amount is the higher of fair value less costs to sell and value in use. In assessing value in use, the estimated future cash flows are discounted to their present value using a pre-tax discount rate that reflects current market assessments of the time value of money and the risks specific to the asset for which the estimates of future cash flows have not been adjusted. If the recoverable amount of an asset (or cash-generating unit) is estimated to be less than its carrying amount, the carrying amount of the asset (or cash-generating unit) is reduced to its recoverable amount. An impairment loss is recognised immediately in profit or loss, unless the relevant asset is carried at a revalued amount, in which case the impairment loss is treated as a revaluation decrease.
Recognised impairment losses are reversed if, and only if, the reasons for the impairment loss have ceased to apply. Where an impairment loss subsequently reverses, the carrying amount of the asset (or cash-generating unit) is increased to the revised estimate of its recoverable amount, but so that the increased carrying amount does not exceed the carrying amount that would have been determined had no impairment loss been recognised for the asset (or cash-generating unit) in prior years. A reversal of an impairment loss is recognised immediately in profit or loss, unless the relevant asset is carried at a revalued amount, in which case the reversal of the impairment loss is treated as a revaluation increase.
The group has elected to apply the provisions of Section 11 ‘Basic Financial Instruments’ and Section 12 ‘Other Financial Instruments Issues’ of FRS 102 to all of its financial instruments.
Financial instruments are recognised in the group's balance sheet when the group becomes party to the contractual provisions of the instrument.
Financial assets and liabilities are offset and the net amounts presented in the financial statements when there is a legally enforceable right to set off the recognised amounts and there is an intention to settle on a net basis or to realise the asset and settle the liability simultaneously.
Basic financial assets, which include debtors and cash and bank balances, are initially measured at transaction price including transaction costs and are subsequently carried at amortised cost using the effective interest method 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. Financial assets classified as receivable within one year are not amortised.
Other financial assets, including investments in equity instruments which are not subsidiaries, associates or joint ventures, are initially measured at fair value, which is normally the transaction price. Such assets are subsequently carried at fair value and the changes in fair value are recognised in profit or loss, except that investments in equity instruments that are not publicly traded and whose fair values cannot be measured reliably are measured at cost less impairment.
Financial assets, other than those held at fair value through profit and loss, are assessed for indicators of impairment at each reporting end date.
Financial assets are impaired where there is objective evidence that, as a result of one or more events that occurred after the initial recognition of the financial asset, the estimated future cash flows have been affected. If an asset is impaired, the impairment loss is the difference between the carrying amount and the present value of the estimated cash flows discounted at the asset’s original effective interest rate. The impairment loss is recognised in profit or loss.
If there is a decrease in the impairment loss arising from an event occurring after the impairment was recognised, the impairment is reversed. The reversal is such that the current carrying amount does not exceed what the carrying amount would have been, had the impairment not previously been recognised. The impairment reversal is recognised in profit or loss.
Financial assets are derecognised only when the contractual rights to the cash flows from the asset expire or are settled, or when the group transfers the financial asset and substantially all the risks and rewards of ownership to another entity, or if some significant risks and rewards of ownership are retained but control of the asset has transferred to another party that is able to sell the asset in its entirety to an unrelated third party.
Financial liabilities and equity instruments are classified according to the substance of the contractual arrangements entered into. An equity instrument is any contract that evidences a residual interest in the assets of the group after deducting all of its liabilities.
Basic financial liabilities, including creditors, bank loans, loans from fellow group companies and preference shares that are classified as debt, are initially recognised at transaction price unless the arrangement constitutes a financing transaction, where the debt instrument is measured at the present value of the future payments discounted at a market rate of interest. Financial liabilities classified as payable within one year are not amortised.
Debt instruments are subsequently carried at amortised cost, using the effective interest rate method.
Trade creditors are obligations to pay for goods or services that have been acquired in the ordinary course of business from suppliers. Amounts payable are classified as current liabilities if payment is due within one year or less. If not, they are presented as non-current liabilities. Trade creditors are recognised initially at transaction price and subsequently measured at amortised cost using the effective interest method.
Derivatives, including interest rate swaps and forward foreign exchange contracts, are not basic financial instruments. Derivatives are initially recognised at fair value on the date a derivative contract is entered into and are subsequently re-measured at their fair value. Changes in the fair value of derivatives are recognised in profit or loss in finance costs or finance income as appropriate, unless hedge accounting is applied and the hedge is a cash flow hedge.
Debt instruments that do not meet the conditions in FRS 102 paragraph 11.9 are subsequently measured at fair value through profit or loss. Debt instruments may be designated as being measured at fair value through profit or loss to eliminate or reduce an accounting mismatch or if the instruments are measured and their performance evaluated on a fair value basis in accordance with a documented risk management or investment strategy.
Financial liabilities are derecognised when the group's contractual obligations expire or are discharged or cancelled.
Equity instruments issued by the group are recorded at the proceeds received, net of transaction costs. Dividends payable on equity instruments are recognised as liabilities once they are no longer at the discretion of the group.
The tax expense represents the sum of the tax currently payable and deferred tax.
The tax currently payable is based on taxable profit for the year. Taxable profit differs from net profit as reported in the profit and loss account because it excludes items of income or expense that are taxable or deductible in other years and it further excludes items that are never taxable or deductible. The group’s liability for current tax is calculated using tax rates that have been enacted or substantively enacted by the reporting end date.
Deferred tax liabilities are generally recognised for all timing differences and deferred tax assets are recognised to the extent that it is probable that they will be recovered against the reversal of deferred tax liabilities or other future taxable profits. Such assets and liabilities are not recognised if the timing difference arises from goodwill or from the initial recognition of other assets and liabilities in a transaction that affects neither the tax profit nor the accounting profit.
The carrying amount of deferred tax assets is reviewed at each reporting end date and reduced to the extent that it is no longer probable that sufficient taxable profits will be available to allow all or part of the asset to be recovered. Deferred tax is calculated at the tax rates that are expected to apply in the period when the liability is settled or the asset is realised. Deferred tax is charged or credited in the profit and loss account, except when it relates to items charged or credited directly to equity, in which case the deferred tax is also dealt with in equity. Deferred tax assets and liabilities are offset if, and only if, there is a legally enforceable right to offset current tax assets and liabilities and the deferred tax assets and liabilities relate to taxes levied by the same tax authority.
The costs of short-term employee benefits are recognised as a liability and an expense, unless those costs are required to be recognised as part of the cost of stock or fixed assets.
The cost of any unused holiday entitlement is recognised in the period in which the employee’s services are received.
Termination benefits are recognised immediately as an expense when the company is demonstrably committed to terminate the employment of an employee or to provide termination benefits.
Payments to defined contribution retirement benefit schemes are charged as an expense as they fall due.
Rentals payable under operating leases, including any lease incentives received, are charged to profit or loss on a straight line basis over the term of the relevant lease except where another more systematic basis is more representative of the time pattern in which economic benefits from the leased asset are consumed.
In the application of the group’s accounting policies, 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 associated assumptions are based on historical experience and other factors that are considered to be relevant. Actual results may differ from these estimates.
The estimates and underlying assumptions are reviewed on an ongoing basis. Revisions to accounting estimates are recognised in the period in which the estimate is revised where the revision affects only that period, or in the period of the revision and future periods where the revision affects both current and future periods.
Investments
The company assesses the carrying values of investments annually or more frequently if warranted by a change in circumstances. If it is determined that the carrying values of investments cannot be recovered, the unrecoverable amounts are charged to the profit and loss. Recoverability is dependent upon assumptions and judgements regarding discount rates, future cash flows and profit margins. A material change in assumptions may significantly impact the potential impairment of these assets.
Useful economic life of non-current assets
Management estimate the useful economic life of non-current assets based on the period over which the asset is expected to be used and provide for depreciation accordingly. Where an indication of impairment is identified the estimation of recoverable value requires estimation.
Deferred tax
Management estimation is required to determine the amount of deferred tax asset that can be recognised, based upon likely timing and level of future taxable profits.
Accrued and deferred income
In recognising accrued income in the financial statements, management estimate work completed but not billed to the client. In recognising deferred income in the financial statements management estimate work billed to the client but not completed. These estimates are based on project contracts, project knowledge and professional judgement.
Impairment of trade receivables
The company makes an estimate of the recoverable amount of trade and other debtors. When assessing impairment of trade and other receivables, management considers factors including the credit rating of the receivable, the ageing profile of receivables and historical experience.
All turnover is generated from one revenue stream.
The average monthly number of persons (including directors) employed by the group and company during the year was:
Their aggregate remuneration comprised:
The actual charge for the year can be reconciled to the expected charge for the year based on the profit or loss and the standard rate of tax as follows:
Details of the company's subsidiaries at 31 October 2025 are as follows:
The following are the major deferred tax liabilities and assets recognised by the group and company:
The deferred tax asset set out above for the group is expected to reverse within the next few financial years and relates to the utilisation of tax losses against future expected profits, less accelerated capital allowances. The deferred tax liability set out above for the company is expected to reverse within the next few financial years and relates to accelerated capital allowances that are expected to mature during the same timeframe.
A defined contribution pension scheme is operated for all qualifying employees. The assets of the scheme are held separately from those of the group in an independently administered fund.
At the reporting end date the group had outstanding commitments for future minimum lease payments under non-cancellable operating leases, which fall due as follows:
Air Technology Systems Limited owns 68.5% of ATS Plastics Limited by virtue of its shareholding. The Directors of Air Technology Systems Limited, Mr S Boon & Mrs R Clissett, are also Directors of ATS Plastics Limited.
During the year Air Technology Systems Limited made sales amounting to £823,670 to ATS Plastics Limited (2024 - £219,309), and Air Technology Systems Limited received purchase invoices from ATS Plastics amounting to £824,375 (2024 - £970,683).
At the balance sheet date, amounts owed to Air Technology Systems Limited from ATS Plastics amounted to £716,664 (2024 £1,057,702).
During the year, rent totalling £94,500 (2024 - £94,500) was paid to S Boon and MJF Pension Trustees. One of the Directors, Mr S J Boon, is a member of the S Boon and MJF Pension Trustees pension scheme.
The reconciliation on non-controlling interests is as follows:
Brought forward non-controlling interests at 1 November 2024: (£170,189)
Total comprehensive income for the year attributable to non-controlling interests: £31,819
Carried forward non-controlling interest at 31 October 2025: (£138,370)