 The Leopard had enjoyed huge success as a bus in Scotland, usually with the Alexander Y-type body, but had lost some Scottish Bus Group orders to Seddon's Pennine 7, owing to Leyland's unwillingness to offer a Gardner engine in the Leopard.When Leyland launched the Tiger, it continued this same unwillingness, just as Dennis was developing the Gardner-engined Dennis Dorchester, which similarly had the potential to win Scottish Bus Group orders away from the Tiger.Faced with this possibility, Leyland offered Gardner 6HLX-series engines in the Tiger from 1984.