Leasing and hire purchases Tangible assets held under leasing and Hire Purchases arrangements which transfer substantially all the risks and rewards of ownership to the company are capitalised and included in the Balance Sheet at their cost or valuation, less depreciation. The corresponding commitments are recorded as liabilities. Payments in respect of these obligations are treated as consisting of capital and interest elements, with interest charged to the Profit and Loss Account. Stocks Stocks are valued at the lower of cost and net realisable value. Stocks are determined on a first-in first-out basis. Cost comprises expenditure incurred in the normal course of business in bringing stocks to their present location and condition. Full provision is made for obsolete and slow moving items. Net realisable value comprises actual or estimated selling price (net of trade discounts) less all further costs to completion or to be incurred in marketing and selling. Trade and other debtors Trade and other debtors are initially recognised at fair value and thereafter stated at amortised cost using the effective interest method less impairment losses for bad and doubtful debts except where the effect of discounting would be immaterial. In such cases the receivables are stated at cost less impairment losses for bad and doubtful debts. Borrowing costs Borrowing costs relating to the acquisition of assets are capitalised at the appropriate rate by adding them to the cost of assets being acquired. Investment income earned on the temporary investment of specific borrowings pending their expenditure on the assets is deducted from the borrowing costs eligible for capitalisation. All other borrowing costs are recognised in profit or loss in the period in which they are incurred. Trade and other creditors Trade and other creditors are initially recognised at fair value and thereafter stated at amortised cost using the effective interest rate method, unless the effect of discounting would be immaterial, in which case they are stated at cost. Taxation and deferred taxation Current tax represents the amount expected to be paid or recovered in respect of taxable profits for the financial year and is calculated using the tax rates and laws that have been enacted or substantially enacted at the Balance Sheet date. Deferred tax is recognised in respect of all timing differences that have originated but not reversed at the balance sheet date where transactions or events have occurred at that date that will result in an obligation to pay more tax in the future, or a right to pay less tax in the future. Timing differences are temporary differences between the company's taxable profits and its results as stated in the financial statements. Deferred tax is measured on an undiscounted basis at the tax rates that are anticipated to apply in the periods in which the timing differences are expected to reverse, based on tax rates and laws that have been enacted or substantively enacted by the Balance Sheet date. Government grants Capital grants received and receivable are treated as deferred income and amortised to the Profit and Loss Account annually over the useful economic life of the asset to which it relates. Revenue grants are credited to the Profit and Loss Account when received. Foreign currencies Monetary assets and liabilities denominated in foreign currencies are translated at the rates of exchange ruling at the Balance Sheet date. Non-monetary items that are measured in terms of historical cost in a foreign currency are translated at the rates of exchange ruling at the date of the transaction. Non-monetary items that are measured at fair value in a foreign currency are translated using the exchange rates at the date when the fair value was determined. The resulting exchange differences are dealt with in the Profit and Loss Account. Research and development Development expenditure is written off in the same financial year unless the directors are satisfied as to the technical, commercial and financial viability of individual projects. In this situation, the expenditure is deferred and amortised over the period from which the company is expected to benefit. Development costs are amortised at 33% straight line. Ordinary share capital The ordinary share capital of the company is presented as equity