HC Deb 24 November 1927 vol 210 c2034
5. Captain A. EVANS

asked the Home Secretary what instructions are given to police officers on duty at private parking centres within the Metropolitan area, when an attendant who has been licensed by the authorities is also on duty?

Sir W. JOYNSON-HICKS

The police do not supervise private parking places, but police officers performing duty in the vicinity of parking places in the public streets are instructed generally to supervise the licensed messengers, to see that the Minister of Transport's Regulations are enforced and that the parking privilege is not abused, and to report offenders when necessary.