British Rail contract to construct 25 Class 143 carriages. In 1987, Walter Alexander became a publicly listed company, having previously been a private firm run by the Alexander family. The ownership of the company subsequently changed several times: In 1990 the family sold the company to Spotlaunch plc but within two years a management buyout occurred and it became a standalone company until 1995, when it was bought by the Mayflower Corporation plc. In 2001, it was incorporated into TransBus International. It is now part of Alexander Dennis. Products Walter Alexander built many different types of bodywork over 50 years, with the most famous being the Y-Type single decker. Railcars British Rail Class 143 - on underframes by Andrew Barclay British Rail Class 144 - on underframes by British Rail Engineering Limited Double-deck buses A type and J type - double-deck body (for Leyland Atlantean/Daimler Fleetline) to 1972 C type -lowheight double-deck body for Albion Lowlander 1961–65. D type, K type and AD type (A for alloy) - lowheight double-deck body (mainly on Fleetline chassis) L type and AL type - double-deck body (for Atlantean/Fleetline/VR) from 1972 AV type - double-deck body for Volvo Ailsa B55 R type - including RH, RL, RV, RX, RLC, RVC, RHS and Royale - post 1981 double deck body ALX series - including ALX400 & ALX500 - low-floor bodies CB type - for China Motor Bus KB type - for Kowloon Motor Bus LB type - for New Lantao Bus MB type - for Manila Bus SB type - for Singapore Bus Service Single-deck buses and coaches Y type - including AY and AYS types (A for alloy, S for bus specification) W type M type - Motorway coach for Scottish Bus Group Anglo-Scottish services T type - including AT, TS, TC, TE (A for alloy, S for stage, C for coach, E for express) P type PS type - development of P type, popular with Stagecoach and SBS Transit Strider - for full-size rear-engined chassis AM type Sprint - minibus body Dash - midibus body (for Dennis Dart/Volvo B6) ALX series ALX100 - minibus ALX200 - small low-floor single-deck ALX300 - full-size low-floor single-deck Alexander (Belfast) buses X type (unofficial title) - for Leyland Leopard and Bristol RE N type - for Leyland Tiger, Lynx, and B21 Q type - for Leyland Tiger and Volvo B10M D type - Alexander (Belfast) version of