The Leyland National was a British single-deck bus built in large quantities between 1972 and 1985. It was developed as a joint project between two UK nationalised industries - the National Bus Company and British Leyland. Buses were constructed at a specially built factory at the Lillyhall Industrial Estate, Workington, Cumbria. It was built with the intention to replace all the single-deckers offered by British Leyland, including AEC Swift, Bristol RE, single-deck Daimler Fleetline, Daimler Roadliner and Leyland Panther.