Leasing and hire purchases:Property, plant and equipment 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 Statement of Financial Position 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 Income Statement.Trade and other receivables:Trade and other receivables 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.Provisions:Provisions are recognised when the company has a present legal or constructive obligation arising as a result of a past event, it is probable that an outflow of economic benefits will be required to settle the obligation and a reliable estimate can be made. Provisions are measured at the present value of the expenditures expected to be required to settle the obligation using a pre-tax rate that reflects current market assessments of the same value of money and the risks specific to the obligation. The increase in the provision due to passage of time is recognised as interest expense.Trade and other payables:Trade and other payables 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 Statement of Financial Position 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.Foreign currencies:Monetary assets and liabilities denominated in foreign currencies are translated at the rates of exchange ruling at the Statement of Financial Position 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 Income Statement.