There is a complete book dedicated to the police use of MGs. They often came in fleets of 6 to 12 cars. Dozens of MGA's were delivered to the Lancashire Constabulary over the years Nov 1955 thru at least October 1961 (see cerficate bellow). There were some 17 alterations to standard spec cars for the police vehicles, including special high accuracy speedometer. At least one or two other British police departments also used MGA for police cars.

      Production Record Trace Certificate, 1961 --- Test Cretificate, 1976

1957 photo of Lancashire women police officiers with their MGAs. (from Saftey Fast! Feb 1997). On right 1962, Police Constable 875 Graham Crockett of the Glamorganshire Constabulary.

MG ZA Magnette police cars, painted black and maroon.
Northhumberland Police 1956

MGA police car being used as pace car at the Goodwood Revival around 1997(+/-).

Above and below, same car at Goodwood Revival, 2009

MGA police car at Lakeland Motor Museum in UK, 1997(+/-).

Same car below in October 2011