Jam sandwich (police car)

A British Transport Police Nissan Terrano, featuring "jam sandwich" livery
The "jam sandwich" variant used by the Metropolitan Police

In British slang, a "jam sandwich" or "jam butty" is a police car with a red or orange stripe applied to the side. The livery design was used by British police on most police vehicles in the country from the mid-1960s to the early 2010s, when it was largely replaced by Battenburg markings.