Leveson gagged me over police smears: Whistleblower 'tried to expose Met dirty tricks and smear tactics... but was stopped by judge of Press inquiry

Peter Tickner, a former anti-fraud investigator, said he wanted to reveal dirty tricks campaigns within Scotland Yard to the Leveson Inquiry into media ethics last year - but was gagged from doing so. Speaking publicly for the for the first time, the official claims senior figures within the Met Police prevented him from 'speaking a truth that no one wanted to hea