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| The
group’s principal accounting policies are set out here
on the the consolidated financial statements and conform with IFRS.
These policies, and applicable estimation techniques, have been
reviewed by the directors who have confirmed them to be the most
appropriate for the preparation of the 2006 financial statements. We, in common with virtually all other companies, need to use estimates in the preparation of our financial statements. The most sensitive estimates affecting our financial statements are in the areas of assessing the level of interconnect income with and payments to other telecommunications operators, providing for doubtful debts, establishing asset lives of property, plant and equipment for depreciation purposes, assessing the stage of completion and likely outcome under long term contracts, making appropriate long-term assumptions in calculating pension liabilities and costs, making appropriate medium-term assumptions on asset impairment reviews and calculating current and deferred tax liabilities. Details of critical accounting estimates and key judgements are provided here in the accounting policies.
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