The Daimler DS420, also known as the Daimler Limousine, is a limousine made by the Daimler Company between 1968 and 1992. The car was designed for official use and was popular with chauffeur services, hoteliers and undertakers.

Royal tradition: Daimler has delivered automobiles to all five monarchs of the United Kingdom since 1901. Prince Philip opened the door to Rolls-Royce with an order for a private car, a Rolls-Royce Phantom IV, which was delivered in 1950 and became part of the official fleet in 1952 when Princess Elizabeth became Queen.

In comparison to a Rolls-Royce Phantom VI, the DS420's wheelbase was 4 inches (10 cm) shorter, its body 12 inches (30 cm) shorter, it was approximately 350 kilograms (770 lb) lighter, and its engine had only about two-thirds the displacement of the Rolls-Royce V8.