Basis of preparationThe financial statements have been prepared on the historical cost basis, as modified by the revaluationof certain financial assets and liabilities and investment properties measured at fair value through profitor loss.The financial statements are prepared in sterling, which is the functional currency of the entity.-TaxationThe taxation expense represents the aggregate amount of current and deferred tax recognised in thereporting period. Tax is recognised in the statement of comprehensive income, except to the extent thatit relates to items recognised in other comprehensive income or directly in capital and reserves. In thiscase, tax is recognised in other comprehensive income or directly in capital and reserves, respectively.Current tax is recognised on taxable profit for the current and past periods. Current tax is measured atthe amounts of tax expected to pay or recover using the tax rates and laws that have been enacted orsubstantively enacted at the reporting date.Deferred tax is recognised in respect of all timing differences at the reporting date. Unrelieved taxlosses and other deferred tax assets are recognised to the extent that it is probable that they will berecovered against the reversal of deferred tax liabilities or other future taxable profits. Deferred tax ismeasured using the tax rates and laws that have been enacted or substantively enacted by thereporting date that are expected to apply to the reversal of the timing difference.-Tangible assetsTangible assets are initially recorded at cost, and are subsequently stated at cost less any accumulateddepreciation and impairment losses.Any tangible assets carried at revalued amounts are recorded at the fair value at the date of revaluationless any subsequent accumulated depreciation and subsequent accumulated impairment losses.An increase in the carrying amount of an asset as a result of a revaluation, is recognised in othercomprehensive income and accumulated in capital and reserves, except to the extent it reverses arevaluation decrease of the same asset previously recognised in profit or loss. A decrease in thecarrying amount of an asset as a result of revaluation is recognised in other comprehensive income tothe extent of any previously recognised revaluation increase accumulated in capital and reserves inrespect of that asset. Where a revaluation decrease exceeds the accumulated revaluation gainsaccumulated in capital and reserves in respect of that asset, the excess shall be recognised in profit orloss.-ImpairmentA review for indicators of impairment is carried out at each reporting date, with the recoverable amountbeing estimated where such indicators exist. Where the carrying value exceeds the recoverableamount, the asset is impaired accordingly. Prior impairments are also reviewed for possible reversal ateach reporting date.When it is not possible to estimate the recoverable amount of an individual asset, an estimate is madeof the recoverable amount of the cash-generating unit to which the asset belongs. The cash-generatingunit is the smallest identifiable group of assets that includes the asset and generates cash inflows thatare largely independent of the cash inflows from other assets or groups of assets.-Government grantsGovernment grants are recognised at the fair value of the asset received or receivable. Grants are notrecognised until there is reasonable assurance that the company will comply with the conditionsattaching to them and the grants will be received.Government grants are recognised using the accrual model and the performance model.Under the accrual model, government grants relating to revenue are recognised on a systematic basisover the periods in which the company recognises the related costs for which the grant is intended tocompensate. Grants that are receivable as compensation for expenses or losses already incurred or forthe purpose of giving immediate financial support to the entity with no future related costs arerecognised in income in the period in which it becomes receivable.Grants relating to assets are recognised in income on a systematic basis over the expected useful lifeof the asset. Where part of a grant relating to an asset is deferred, it is recognised as deferred incomeand not deducted from the carrying amount of the asset.Under the performance model, where the grant does not impose specified future performance-relatedconditions on the recipient, it is recognised in income when the grant proceeds are received orreceivable. Where the grant does impose specified future performance-related conditions on therecipient, it is recognised in income only when the performance-related conditions have been met.Where grants received are prior to satisfying the revenue recognition criteria, they are recognised as aliability.-Financial instrumentsA financial asset or a financial liability is recognised only when the company becomes a party to thecontractual provisions of the instrument.Basic financial instruments are initially recognised at the transaction price, unless the arrangementconstitutes a financing transaction, where it is recognised at the present value of the future paymentsdiscounted at a market rate of interest for a similar debt instrument.Debt instruments are subsequently measured at amortised cost.Where investments in non-convertible preference shares and non-puttable ordinary shares orpreference shares are publicly traded or their fair value can otherwise be measured reliably, theinvestment is subsequently measured at fair value with changes in fair value recognised in profit or loss.All other such investments are subsequently measured at cost less impairment.Other financial instruments, including derivatives, are initially recognised at fair value, unless paymentfor an asset is deferred beyond normal business terms or financed at a rate of interest that is not amarket rate, in which case the asset is measured at the present value of the future paymentsdiscounted at a market rate of interest for a similar debt instrument.Other financial instruments are subsequently measured at fair value, with any changes recognised inprofit or loss, with the exception of hedging instruments in a designated hedging relationship.Financial assets that are measured at cost or amortised cost are reviewed for objective evidence ofimpairment at the end of each reporting date. If there is objective evidence of impairment, animpairment loss is recognised in profit or loss immediately.For all equity instruments regardless of significance, and other financial assets that are individuallysignificant, these are assessed individually for impairment. Other financial assets or either assessedindividually or grouped on the basis of similar credit risk characteristics.Any reversals of impairment are recognised in profit or loss immediately, to the extent that the reversaldoes not result in a carrying amount of the financial asset that exceeds what the carrying amount wouldhave been had the impairment not previously been recognised.