In the application of the company's accounting policies management is required to make judgements, estimates and assumptions about the carrying value of assets and liabilities that are not readily ascertainable from other sources. The estimates and underlying assumptions are based on historical experience and other factors that are considered to be relevant. Actual outcomes may differ from these estimates.
The estimates and underlying assumptions are reviewed on a continuing basis. Revisions to accounting estimates are recognised in the period in which the estimates are revised.
The key areas of estimation uncertainty that have a significant effect on the amounts recognised in the financial statements are described below: