Plebgate: Scotland Yard chief under new pressure over 'farcical' inquiry The Cabinet minister admitted swearing at officers after being asked to wheel his bicycle out of a side gate but denied calling them "******* plebs." A file on the incident was submitted by the Met to the Crown Prosecution Service (CPS) on Thursday which is said to have found no evidence that Downing Street police lied. But it has been reported that the CPS has issues with the quality of the Met's inquiry. Detective Inspector Gill Barratt, vice-chairwoman of the Met Police Federation, said: "We have always said we wanted it investigated thoroughly. If it now has to come back to the Met to do it more thoroughly then that is extremely disappointing that they haven't done it in the first place. My view is that to keep the inquiry in-house was a tactical error by the Met. However, I think it is now too late to go back to the drawing board. Sir Bernard ruled that the Plebgate incident should be investigated by Scotland Yard's own Directorate of Professional Standards. It has been examining how information about the incident was leaked to The Daily Telegraph and The Sun, and allegations of a conspiracy among officers to end Mr Mitchell's career. About 30 detectives have taken statements from all 800 officers in the specialist group which provides protection at Downing Street and other sites. Sir Bernard promised a "ruthless search for the truth." He announced at the end of January that Greater Manchester Police would be asked to review the Met's own investigation, in addition to it being overseen by the Independent Police Complaints Commission. The commissioner said: "It is good practice to have a review and this provides our reassurance we are doing it well. Openness and transparency is best. However, there are now questions that his approach has not been sufficient. In December Mr Mitchell, the MP for Sutton Coldfield, said it was "completely and totally untrue" that he had used "awful, toxic" words such as pleb during the altercation. Video footage from a Downing Street CCTV camera appeared to undermine officers" original version of events. Sir Bernard was forced to cut short a Christmas break to oversee the Metropolitan Police's approach to the growing crisis. A Scotland Yard spokesman: "This is an ongoing investigation and it has yet to reach a conclusion."