Alexander Y Type
The Alexander Y Type was a long-running design of single-decker bus and single-decker intercity bus bodywork built by Walter Alexander Coachbuilders in Falkirk, Scotland. It was built on a wide range of chassis between 1962 and 1983. A small number were built at Alexander's Belfast subsidiary.
From 1971, it became the AY Type or AYS Type, although in common usage all are referred to simply as Y Type.
The Alexander Y Type was replaced by the P Type single-deck bus body in 1983, assembled with a light aluminium frame on the Dennis Lancet, Leyland Leopard, Leyland Tiger, Scania K92CRB and Volvo B10M chassis. After securing a handful of orders, including those from some SBG companies in the lead-up to bus deregulation in Great Britain, the P Type was replaced in 1988 by the ultimately more successful PS Type.
Chassis
The majority of Y Type bodies were fitted to Leyland Leopard chassis, and most were built for the Scottish Bus Group and its predecessors.| Chassis | Approximate number of bodies | Number for SBG and predecessors | Notes |
| Leyland Leopard | 1803 | 1550 | PSU3 and PSU4 models |
| AEC Reliance | 330 | 238 | |
| Seddon Pennine 7 | 284 | 284 | |
| Ford R-Series | 244 | 242 | R192, R226, R1014 and R1114 models |
| Albion Viking | 230 | 228 | VK41, VK43 and VK49 models |
| Bristol RE | 128 | 66 | RELH, RELL and RESL models |
| Bedford Y series | 92 | 81 | YRQ and YRT models |
| Bristol LH | 75 | 75 | LH6P model |
| Leyland Tiger Cub | 52 | 31 | |
| Bedford VAM | 27 | 27 | VAM5 model |
| Leyland Panther | 2 | 0 | for Newcastle Corporation, classified Y type but actually W type bodies |
| Dennis Lancet | 1 | 1 | |
| Volvo B58 | 1 | 0 | B58-56 demonstrator |
| Volvo B57 | 1 | 1 | |
| TOTAL | 3270 | 2824 | - |