A current tax liability is recognised for the tax payable on the taxable profit of the current and past
periods. A current tax asset is recognised in respect of a tax loss that can be carried back to
recover tax paid in a previous period. Deferred tax is recognised in respect of all timing
differences between the recognition of income and expenses in the financial statements and their
inclusion in tax assessments. Unrelieved tax losses and other deferred tax assets are recognised
only to the extent that it is probable that they will be recovered against the reversal of deferred tax
liabilities or other future taxable profits. Deferred tax is measured using the tax rates and laws
that have been enacted or substantively enacted by the reporting date and that are expected to
apply to the reversal of the timing difference, except for revalued land and investment property
where the tax rate that applies to the sale of the asset is used. Current and deferred tax assets
and liabilities are not discounted.