The Leyland-MCW Olympic was a successful underfloor-engined single-deck bus built for at least eighteen countries from 1949 to 1971. 3,564 Olympics were built at four factories (two 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.