Police cars : Jaguar
It takes one to catch one: in fact, some British police forces were using Jaguar saloons as early as the 1940s, but they came into their own as motorway patrol cars. In the pre-BMH/Leyland era, Daimler SP250s and even Jaguar E-types also found their way onto certain police fleets.
A 1968 Jaguar S-Type in service with the Metropolitan Police Force.
A West Yorkshire Jaguar XJ6, photographed on a closed stretch of motorway in 1972.