The Comptroller and Auditor General, head of the National Audit Office, has reported on the BBC Television Fee Trust Statement for 2017/18. In this period the BBC issued nearly 26 million TV licences, resulting in income of £3.8 billion. The licence fee evasion rate was 7.04% which represents no significant change since 2016/17 (6.91%)
BBC Television Fee Trust Statement 2017/18
Audit certificate (pages 17-19)
Audit report (pages 27-39)