A traffic cop who once warned speeding drivers "this is not Silverstone’’ has been sacked for going 154 mph in a police car while on duty.

PC Adam Smith was dismissed by North Yorkshire Police after a misconduct hearing found him guilty of gross misconduct. Smith was caught driving at 154 mph and 98 mph on the same journey, shortly after filming a force publicity video aimed at cracking down on ‘street racing’ in Selby.