Rupert Murdoch’s News Corp could face compensation claims that would “dwarf” its £330 million bill for phone-hacking, it was claimed yesterday, after the journalist known as the “Fake Sheikh” was convicted of perverting justice.

Mazher Mahmood, the 53-year-old “king of the sting”, faces jail after he and his driver, Alan Smith, were found to have tampered with evidence in the collapsed drugs trial of the pop star Tulisa Contostavlos.

The Criminal Cases Review Commission is now reviewing the convictions of six people who were found guilty of offences as a result of evidence provided by Mahmood, whose career has spanned the News of the World, the Sunday Times and the Sun on Sunday.