Criminal record checks: more often wrong than right / The Register, 9 July 2008
http://www.theregister.co.uk/2008/07/09/vetting_checks/
John Ozimek
"Sleight of hand by the Home Office doesn’t quite cover up the fact that last year the number of people wrongly branded as criminals was actually more than the number of people identified as having committed a sex crime. That is the picture that emerges if you take the time to wade through the morass of ever-so-slightly skewed figures put out by the Criminal Records Bureau (CRB)."
CRB annual report: PDF - http://www.crb.gov.uk/pdf/Annual%20Report%20&%20Accounts%202006-07.pdf