The notes on pages 3 to 6 form part of these financial statements.

The directors of the company have elected not to include a copy of the income statement within the financial statements.

For the financial year ended 30 June 2025 the company was entitled to exemption from audit under section 480 of the Companies Act 2006 relating to dormant companies.

The directors acknowledge their responsibilities for complying with the requirements of the Companies Act 2006 with respect to accounting records and the preparation of financial statements.

The members have not required the company to obtain an audit of its financial statements for the year in question in accordance with section 476.

These financial statements have been prepared and delivered in accordance with the provisions applicable to companies subject to the small companies regime.

The notes on pages 3 to 6 form part of these financial statements.

Aptasort Limited is a private company limited by shares incorporated in England and Wales. The registered office is Windmill House, Innovation Way, York, YO10 5BR. The company's principal activities and nature of its operations are disclosed in the directors' report.

The financial statements have been prepared in accordance with Financial Reporting Standard 101 Reduced Disclosure Framework (FRS 101) and in accordance with applicable accounting standards.

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.

As permitted by FRS 101, the company has taken advantage of the following disclosure exemptions from the requirements of IFRS:

• presentation of a statement of cash flows and related notes;

• disclosure of the objectives, policies and processes for managing capital;

• disclosure of key management personnel compensation;

• disclosure of the future impact of new International Financial Reporting Standards in issue but not yet effective at the reporting date;

• comparative narrative information;

• for financial instruments and investment property measured at fair value and within the scope of IFRS 13, the valuation techniques and inputs used to measure fair value, the effect of fair value measurements with significant unobservable inputs on the result for the period and the impact of credit risk on the fair value; and

• related party disclosures for transactions with the parent or wholly owned members of the group.

• Revenue disclosures, including:

  • Disaggregated and total revenue from contracts with customers;

  • Explanation of significant changes in contract assets and liabilities;

  • Description of when performance obligations are satisfied, significant payment terms, and the nature of goods and services to be transferred;

  • Aggregate transaction price allocated to unsatisfied performance obligations and when revenue is expected to be recognised;

  • Significant judgements in determining the amount and timing of revenue recognition and the amount of capitalised costs to obtain or fulfil a contract;

  • Methods used to recognise revenue over time, determine transaction price and amounts allocated to performance obligations and determine amortisation of capitalised cost to obtain or fulfil a contract; and

• Financial instrument disclosures, including:

  • Carrying amounts and fair values of financial instruments by category and information about the nature and extent of risks arising on financial instruments;

  • Income, expenses, gains, and losses on financial instruments.

The financial statements of the company are consolidated into the financial statements of Aptamer Group PLC. The consolidated financial statements of Aptamer Group PLC are available from its registered office, Windmill House, Innovation Way, York, England, YO10 5BR.

The Directors have considered the applicability of the going concern basis in the preparation of these financial statements, which includes assessing an internal forecast extending out to June 202true6 which is prepared at the Aptamer Group level. The Directors consider that this forecast represents a reasonable best estimate of the performance of the Group over the period to June 2026.

The Directors have assessed the going concern status on a Group basis, although it is notable that this company has no plans to trade in the foreseeable future and is expected to be dormant for the year ended 30 June 2026 and beyond. Further details of the going concern assessment can be found in the group financial statements for Aptamer Group Plc.

The company recognises financial debt when the company becomes a party to the contractual provisions of the instruments. Financial liabilities are classified as either 'financial liabilities at fair value through profit or loss' or 'other financial liabilities'.

Other financial liabilities, including borrowings, trade payables and other short-term monetary liabilities, are initially measured at fair value net of transaction costs directly attributable to the issuance of the financial liability. They are subsequently measured at amortised cost using the effective interest method. For the purposes of each financial liability, interest expense includes initial transaction costs and any premium payable on redemption, as well as any interest or coupon payable while the liability is outstanding.

Financial liabilities are derecognised when, and only when, the company’s obligations are discharged, cancelled, or they expire.

Equity instruments issued by the company are recorded at the proceeds received, net of direct issue costs. Dividends payable on equity instruments are recognised as liabilities once they are no longer at the discretion of the company.

Deferred tax is the tax expected to be payable or recoverable on differences between the carrying amounts of assets and liabilities in the financial statements and the corresponding tax bases used in the computation of taxable profit, and is accounted for using the balance sheet liability method. Deferred tax liabilities are generally recognised for all taxable temporary differences and deferred tax assets are recognised to the extent that it is probable that taxable profits will be available against which deductible temporary differences can be utilised. Such assets and liabilities are not recognised if the temporary 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 income statement, 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 when the company has 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.

Finance costs

Finance costs are expensed in the period in which they are incurred.

The average monthly number of persons (including directors) employed by the company during the year was:

The directors consider that the carrying amount of the amounts due to group undertakings approximates their fair values.

As at 30 June 2025, the company had unrelieved tax losses of approximately £24,000 (2024: £24,000). A deferred tax asset of £6,000 (2024: £6,000) at 25% has not been recognised in respect of these losses due to uncertainty of timing of taxable profits.

The company’s Ordinary shares each carry the right to one vote at general meetings of the company. All issued share capital is classified as equity.

The following describes the nature and purpose of each reserve within equity:

Retained earnings

Cumulative profit and loss net of distributions to owners.

The company is wholly owned by Aptamer Group PLC, a company registered in England and Wales.

The company’s ultimate parent and controlling party, Aptamer Group PLC. is both the largest and smallest entity for which group accounts are drawn up and copies of the consolidated financial statements are available from the registered office at Aptamer Group PLC, Windmill House, Innovation Way, York, England, YO10 5BR.