High Quality Content by WIKIPEDIA articles! The Leyland Leopard was a mid-engined single-deck bus and coach chassis built by Leyland between 1959 and 1982. It was popular with bus and coach operators throughout the British Isles. It was developed from the Leyland Tiger Cub, one of the most important changes being the introduction of the larger and more powerful O.600 engine (later-built Leopards were fitted with the 11.1-litre O.680 engine). In Scotland, many were bought by subsidiaries of the Scottish Bus Group and were mostly bodied by Alexanders with the Y type body, as both buses and coaches. The Irish company CIÉ also bought a substantial fleet, mainly with bodywork built in its own workshops, as did its Northern Irish counterpart the UTA and its successor Ulsterbus, which bought the Alexander X type body. The Leopard was extremely common on Northern Irish roads for over 40 years, with the first one arriving in 1968 and the last one in 1984. During this period a total of 1500 Leopards were built.