The Leyland-MCW Olympic was an underfloor-engined single-deck bus manufactured for at least eighteen countries from 1949 to 1971. 3,564 Olympics were built at four factories (three in the UK, one in South Africa) from 1949 to 1971, with 1,299 Olympics (36%) built as right hand drive and 2,265 (64%) as left hand drive. It was a very durable heavy-duty bus which ran in arduous conditions for longer periods than ever envisaged by its designers.