Apple is estimated to have avoided more than £550m in tax in Britain in 2011. Its latest accounts show UK turnover at just over £1bn and profit at £81.3m, generating a tax bill of £14.4m. However, analysis of its filings in America suggest a more realistic figure for UK turnover is £6.7bn. This would imply an estimated profit of £2.2bn and, at the then corporation tax rate of 26pc, a £570m tax bill, the Sunday Times reports.