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

The principal activity of the company continues to be the provision of sales, marketing, technical and after-sales support services to Rigaku group companies. It also recharges costs relating to employees who provide services to other group companies.

The results for the year are set out on page 6.

No ordinary dividends were paid. The directors do not recommend payment of a final dividend.

The directors who held office during the year and up to the date of signature of the financial statements were as follows:

The directors are responsible for preparing the annual report and the financial statements in accordance with applicable law and regulations.

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 financial statements in accordance with International Financial Reporting Standards (IFRSs) as adopted by the United Kingdom. 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, International Accounting Standard 1 requires that directors:

• properly select and apply accounting policies;

• present information, including accounting policies, in a manner that provides relevant, reliable, comparable and understandable information;

• provide additional disclosures when compliance with the specific requirements in IFRSs are insufficient to enable users to understand the impact of particular transactions, other events and conditions on the entity's financial position and financial performance; and

• make an assessment of the company's ability to continue as a going concern.

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 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.

Each director in office at the date of approval of this annual report confirms 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 he / she ought to have taken as a director in order to make himself / herself aware of any relevant audit information and to establish that the company's auditor is aware of that information.

This confirmation is given and should be interpreted in accordance with the provisions of section 418 of the Companies Act 2006.

We have audited the financial statements of Rigaku UK, Limited (the 'company') for the year ended 31 December 2025 which comprise the statement of comprehensive income, the statement of financial position, the statement of changes in equity, the 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 UK adopted international accounting standards.

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 profit for the year then ended;

• have been properly prepared in accordance with UK adopted international accounting standards; 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 UK, including the FRC’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.

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 directors' report for the financial year for which the financial statements are prepared is consistent with the financial statements; and

• the directors' report has been prepared in accordance with applicable legal requirements.

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 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.

• The directors were not entitled to take advantage of the small companies exemption from the requirement to prepare a strategic report.

As explained more fully in the directors' responsibilities statement, included within the directors' report, 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.

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 and 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.

Based on our understanding of the company and sector, we identified that the principal risks of non-compliance with laws and regulations related to, but were not limited to, the Companies Act 2006, UK tax, employment, pension and health and safety legislation and we considered the extent to which non-compliance might have a material effect on the financial statements. We also considered those laws and regulations that have a direct impact on the preparation of the financial statements such as the Companies Act 2006.

We evaluated management’s incentives and opportunities for fraudulent manipulation of the financial statements (including the risk of override of controls) and determined that the principal risks were related to management bias in accounting estimates and judgements and the risk of fraud in revenue recognition.

Our procedures to respond to risks identified included the following:

• reviewing the financial statement disclosures and testing to supporting documentation to assess compliance with provisions of relevant laws and regulations described as having a direct effect on the financial statements;

• enquiring of management about actual and potential litigation and claims, their policies and procedures to prevent and detect fraud as well as whether they have knowledge of any actual, suspected or alleged fraud;

• performing analytical procedures to identify any unusual or unexpected relationships that may indicate risks of material misstatement due to fraud;

• obtaining an understanding of provisions and holding discussions with management to understand the basis of recognition or non-recognition of tax provisions;

• in addressing the risk of fraud through management override of controls: testing the appropriateness of journal entries; assessing whether the accounting estimates, judgements and decisions made by management are indicative of a potential bias; and evaluating the business rationale of any significant transactions that are unusual or outside the normal course of business.

We also communicated relevant identified laws and regulations and potential fraud risks to all engagement team members and remained alert to any indications of fraud or non-compliance with laws and regulations throughout the audit.

There are inherent limitations in our audit procedures described above. The more removed that laws and regulations are from financial transactions, the less likely it is that we would become aware of non-compliance. Auditing standards also limit the audit procedures required to identify non-compliance with laws and regulations to enquiry of the directors and other management and the inspection of regulatory and legal correspondence, if any. Material misstatements that arise due to fraud can be harder to detect than those that arise from error as they may involve deliberate concealment or collusion.

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 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.

The notes on pages 10 to 25 form part of these financial statements.

The notes on pages 10 to 25 form part of these financial statements.

The notes on pages 10 to 25 form part of these financial statements.

The notes on pages 10 to 25 form part of these financial statements.

Rigaku UK, Limited is a private company limited by shares incorporated in England and Wales. The registered office is No.1, St Paul's Square, Old Hall Street, Liverpool, Merseyside, L3 9SJ. 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 International Financial Reporting Standards (IFRS) as adopted for use in the United Kingdom and with the requirements of the Companies Act 2006 applicable to companies reporting under IFRS, except as otherwise stated.

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.

The directors have at the time of approving the financial statements, a reasonable expectation that the truecompany has adequate resources to continue in operational existence for the foreseeable future. Thus the directors continue to adopt the going concern basis of accounting in preparing the financial statements.

Revenue comprises of fees for sales, marketing, technical and after-sales support services provided to Rigaku Europe SE and other Rigaku group companies. Revenue is principally generated from provision of sales and marketing services to Rigaku Europe SE in respect of X-ray business in the UK and to support Rigaku Corporation's distributors and agents for X-ray business in other regions.

Revenue is measured at the consideration specified in the relevant intercompany agreements. Fees are based on the related costs and expenses plus an agreed margin where provided for in those agreements.

The company recognises revenue when service for the month has been completed, which is when the company's performance obligations have been satisfied. Revenue is recognised at this point provided that the revenue and costs can be estimated reliably and the recovery of the consideration is probable. The fee for these services is based on their cost plus expenses and a fixed margin. Invoices are issued monthly and payment is due within 30 days of receipt.

Property, plant and equipment are initially measured at cost and subsequently measured at cost, net of depreciation and any impairment losses.

Depreciation is recognised so as to write off the cost of assets less their residual values over their useful lives on the following bases:

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 income statement.

At each reporting end date, the company reviews the carrying amounts of its tangible 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.

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.

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.

Cash and cash equivalents include cash in hand, deposits held at call with banks, other short-term liquid investments with original maturities of three months or less, and bank overdrafts. Bank overdrafts are shown within borrowings in current liabilities.

Financial assets are recognised in the company's statement of financial position when the company becomes party to the contractual provisions of the instrument. Financial assets are classified into specified categories, depending on the nature and purpose of the financial assets.

At initial recognition, financial assets classified as fair value through profit and loss are measured at fair value and any transaction costs are recognised in profit or loss. Financial assets not classified as fair value through profit and loss are initially measured at fair value plus transaction costs.

Financial instruments are classified as financial assets measured at amortised cost where the objective is to hold these assets in order to collect contractual cash flows, and the contractual cash flows are solely payments of principal and interest. They arise principally from the provision of goods and services to customers (eg trade receivables). They are initially recognised at fair value plus transaction costs directly attributable to their acquisition or issue, and are subsequently carried at amortised cost using the effective interest rate method, less provision for impairment where necessary.

Financial assets are derecognised only when the contractual rights to the cash flows from the asset expire, or when it transfers the financial asset and substantially all the risks and rewards of ownership to another entity.

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.

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 income statement 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 company’s liability for current tax is calculated using tax rates that have been enacted or substantively enacted by the reporting end date.

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.

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 inventories or non-current 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.

At inception, the company assesses whether a contract is, or contains, a lease within the scope of IFRS 16. A contract is, or contains, a lease if the contract conveys the right to control the use of an identified asset for a period of time in exchange for consideration. Where a tangible asset is acquired through a lease, the company recognises a right-of-use asset and a lease liability at the lease commencement date. Right-of-use assets are included within property, plant and equipment, apart from those that meet the definition of investment property.

The right-of-use asset is initially measured at cost, which comprises the initial amount of the lease liability adjusted for any lease payments made at or before the commencement date plus any initial direct costs and an estimate of the cost of obligations to dismantle, remove, refurbish or restore the underlying asset and the site on which it is located, less any lease incentives received.

The right-of-use asset is subsequently depreciated using the straight-line method from the commencement date to the earlier of the end of the useful life of the right-of-use asset or the end of the lease term. The estimated useful lives of right-of-use assets are determined on the same basis as those of other property, plant and equipment. The right-of-use asset is periodically reduced by impairment losses, if any, and adjusted for certain remeasurements of the lease liability.

The lease liability is initially measured at the present value of the lease payments that are unpaid at the commencement date, discounted using the interest rate implicit in the lease or, if that rate cannot be readily determined, the company's incremental borrowing rate. Lease payments included in the measurement of the lease liability comprise fixed payments, variable lease payments that depend on an index or a rate, amounts expected to be payable under a residual value guarantee, and the cost of any options that the company is reasonably certain to exercise, such as the exercise price under a purchase option, lease payments in an optional renewal period, or penalties for early termination of a lease.

The lease liability is measured at amortised cost using the effective interest method. It is reassessed at each financial period end to reflect lease modifications and any changes to the factors considered at initial measurement, as set out above. When the lease liability is remeasured in this way, a corresponding adjustment is made to the carrying amount of the right-of-use asset, or is recorded in profit or loss if the carrying amount of the right-of-use asset has been reduced to zero.

The company has elected not to recognise right-of-use assets and lease liabilities for short-term leases of machinery that have a lease term of 12 months or less, or for leases of low-value assets including IT equipment. The payments associated with these leases are recognised in profit or loss on a straight-line basis over the lease term.

Transactions in currencies other than pounds sterling are recorded at the rates of exchange prevailing at the dates of the transactions. At each reporting end date, monetary assets and liabilities that are denominated in foreign currencies are retranslated at the rates prevailing on the reporting end date. Gains and losses arising on translation in the period are included in profit or loss.

A new standard is effective from 1 January 2025 but it does not have a material effect on the Company's financial statements.

A number of new standards are effective for annual periods beginning on or after 1 January 2026 and earlier application is permitted; however, the Company has not early adopted the new or amended standards in preparing these financial statements.

- IFRS 7 Financial Instruments Disclosures: Amendments to classification and measurement

- IFRS 9 Financial Instruments: Amendments to classification and measurement

- IFRS 19 Subsidiaries without Public Accountability: Amendments to disclosures

- IAS 21 The Effects of Changes in Foreign Exchange Rates: Amendments

- Annual improvements to IFRS: affecting IFRS 1, 7, 9, 10 and IAS 7

None of the above standards not yet effective are expected to have a material impact on the Company's financial statements in the period of initial application.

- IFRS 18 Presentation and Disclosure in Financial Statements

The Company has performed a high-level assessment of the impact of IFRS 18 and does not expect the adoption of the standard to have a material impact on the Company's presentation and disclosure of financial performance or financial position.

In the application of the company’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, if the revision affects only that period, or in the period of the revision and future periods if the revision affects both current and future periods.

Judgement is involved in selecting an appropriate discount to calculate the net present value of lease liabilities. See accounting policy 1.13.

No critical estimates have been identified.

All revenue is from contracts with customers and is recognised at a point in time.

No revenue was recognised in the year that related to performance obligations satisfied in the previous period. No performance obligations were outstanding at the year end.

The average monthly number of persons employed by the company during the year was:

Their aggregate remuneration comprised:

The number of directors for whom retirement benefits are accruing under defined contribution schemes amounted to 2 (2024 - 2).

The charge for the year can be reconciled to the profit per the income statement as follows:

Property, plant and equipment includes right-of-use assets, as follows:

The directors consider that the carrying amount of trade and other receivables is approximately equal to their fair value.

No significant receivable balances are impaired at the reporting end date.

The company has granted HSBC UK Bank PLC a fixed and floating charge over all assets.

Lease liabilities are secured on the assets concerned.

Trade payables and accruals comprise amount outstanding for ongoing costs and staff bonuses. The average credit period for trade payables is 30 days.

The directors consider that the carrying amounts of financial liabilities carried at amortised cost in the financial statements approximate to their fair values.

The following table details the remaining contractual maturity for the company's financial liabilities with agreed repayment periods. The contractual maturity is based on the earliest date on which the company may be required to pay.

The company's activities expose it to a variety of financial risks: market risk (including foreign currency risk, price risk and interest rate risk) and liquidity risk. The company uses different methods to measure the types of risks to which it is exposed. These methods include sensitivity analysis in the case of foreign exchange and price risk and ageing analysis for credit risk.

The carrying amounts of the company's foreign currency denominated monetary liabilities at the reporting date are as follows:

Credit risk

The company is not exposed to any significant credit risk as its principal customers are other group companies.

Price risk

The company is not exposed to any significant price risk. Amounts due to group undertakings are interest free.

Interest rate risk

The company is exposed to interest rate risk on leases as the market value of the liability fluctuates inversely with changes in the prevailing interest rates. The directors monitor changes in the interest rate and take appropriate action as and when deemed necessary.

Liquidity risk

Vigilant liquidity risk management requires the company to maintain sufficient liquid assets (mainly cash and cash equivalents) to be able to pay debts as and when they become due and payable.

The company manages liquidity risk by maintaining adequate cash reserves and available borrowing facilities by continuously monitoring actual and forecast cash flows and matching the maturity profiles of financial assets and liabilities.

Lease liabilities are classified based on the amounts that are expected to be settled within the next 12 months and after more than 12 months from the reporting date, as follows:

The following are the major deferred tax liabilities and assets recognised by the company and movements thereon during the current and prior reporting period.

The deferred tax balance relates to accelerated capital allowances which are expected to reverse within the next four years.

The company operates a defined contribution pension scheme for all qualifying employees. The assets of the scheme are held separately from those of the company in an independently administered fund.

At the balance sheet date the company had outstanding pension contributions to the scheme amounting to £13,769 (2024: £11,753).

The accumulated profit reserve includes accumulated profits and losses up to the balance sheet date which have not been distributed.

Amounts recognised in profit or loss including the following:

At the reporting end date the total future minimum sublease payments expected to be received under non-cancellable subleases was £nil.

The lease ceased in the prior year and the company elected not to recognise a right-of-use asset and lease liability as the lease term was 12 months.

The company is not subject to any externally imposed capital requirements.

The remuneration of key management personnel, including directors, is set out below in aggregate for each of the categories specified in IAS 24 Related Party Disclosures.

During the year the company entered into the following transactions with related parties:

The following amounts were outstanding at the reporting end date:

The following amounts were outstanding at the reporting end date:

The company’s immediate parent undertaking is Rigaku Europe SE whose registered office is Hugenottenallee 167, 63263 Neu-Isenburg, Germany.

The ultimate parent undertaking is Rigaku Holdings Corporation, which is the smallest and largest group of undertakings preparing consolidated accounts including the accounts of the company. Its registered office is Matsubara-cho, 3-9-12 Akishima,-shi, Tokyo, 196-8666 Japan. This company is listed on the Tokyo Stock Exchange and has no controlling party.