The National Bus Company was a nationalised bus company that operated in England and Wales between 1969 and 1988. NBC did not run buses itself, but was the owner of a number of regional subsidiary bus
A Western National Bristol VR in Forder, Cornwall (May 1979)
A National Welsh Omnibus Services Leyland Leopard at Cardiff Central bus station, in the poppy red and white dual purpose version of the NBC corporate livery (June 1980)
A Green Line Leyland National on Oxford Street, London (July 1976)
An Eastern Coach Works (ECW) bodied Bristol in Weymouth, Dorset in National Express livery (1978)
Crosville Motor Services was a bus operator based in the north-west of England and north and mid-Wales.
Preserved ECW bodied Bristol L in Sand Bay, Somerset, in April 2018
ECW bodied Bristol SC at Chester Northgate railway station in January 1967
ECW bodied Bristol Lodekka in National Bus Company livery in Chester in March 1979
Crosville Cymru ECW bodied Leyland Olympian on the "Cymru Coastliner" service in Porthmadog in July 1989