The Leyland Olympian was probably the last mass-market double-deck bus produced in the UK with several thousand constructed both for the domestic & export market. Apart from the UK significant sales for the type occurred in for example Hong Kong where a three-axle version was hugely successful. The Olympian's origins date back to the 1970s with Leyland looking to build upon the earlier B15 (the integrated Titan bought in large numbers by London Transport) & the B45 project (effectively the replacement for the Bristol VR). The first of the Olympians was constructed in 1980 with 350 supplied to London Transport with customers ranging from many of the PTEs through to municipal operators & constituents of the National Bus Company. Under Leyland the bulk of the production was handled at the company's Workington factory but in 1988 Leyland Bus was acquired by Volvo & production was subsequently shifted to Volvo's factory at Irvine in Scotl&. Production of the type ceased in 2000 although many including some in London remain in service.