Senior Conservative MP David Davis has called for police officers to wear a camera and microphone while on duty in the wake of the "plebgate" row.
Mr Davis, an ally of Andrew Mitchell and a former shadow home secretary, wrote in The Times (£) that such technology could help curb the use of force by officers and also "help to defend police officers who have vexatious claims made against them".
He said there is "a crisis of ethics" within the service and called for "root-and-branch reform of policing culture", starting with a Government-appointed Royal Commission to investigate their conduct.
"Regrettably it appears that the Mitchell case is merely a high-profile example, not an isolated one", he added.
The Chief Constable of West Mercia Police has offered an "unreserved apology" to ex-Chief Whip Andrew Mitchell over the 'Plebgate' meeting.
West Mercia Police chief constable has overturned a ruling that three officers who met Andrew Mitchell had no case to answer for misconduct.