Double-decker bus
The first commercial horse-drawn double-decker omnibuses were introduced in England in 1847 by Adams & Co. of Fairfield, Bow, then improved upon by John Greenwood, who introduced a new double-decker in 1852.
Mancunian double-decker bus
The Mancunian double-decker bus was a type of bodywork for double-decker bus designed by Manchester Corporation Transport Department and built on Leyland Atlantean and Daimler Fleetline chassis. A total of 472 Mancunians were ordered by the Department between 1965 and 1968 and delivered from 1968 until 1972 by Park Royal, East Lancs, Metro Cammell and Charles H Roe. The first 96 buses ordered (48 each from Leyland and Daimler) used a chassis, but the majority were long. A further 20 were built for Salford City Transport.