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}}'''GWR Full Third 1116Corridor Composite (TK) 1086''' is one of four 1938-built Collett Corridor Third (TK) such coaches on the SVR, along together with [[GWR 1086 Full Third |1086]], [[GWR 1087 Full Third |1087]] and [[GWR 1146 Full Third |1146]]. By the time they were built in 1938, CME Charles Collett had introduced more modern designs to succeed the 'bow-ended' stock. These coaches seated 64 passengers in 8 third class compartments and were fitted included large picture windows to replace the external door to every compartment, with a lavatory access to the coach being via vestibules at each end. Following a GWR policy decision in late 1937, the 1938 design was built to a more restricted loading gauge as used by the LNER and LMS, such vehicles being identified by a yellow disc on the body ends. The 1938 design also reintroduced two extra entry doors on the corridor side.<ref name=Longworth>[[Bibliography#Other References|Longworth Harris (20131966)]] ppp.54-55104.</ref>These particular coaches have 8 compartments each seating 8 passengers, plus a toilet at each end of the coach.

All four were built at Swindon to diagram number C77 as lot number 1593, with 1116 entering service in June 1938. <ref>[[Bibliography#Other References|Longworth (2018)]] p.55.</ref> Post-nationalisation, passenger service continued with BR(W) with the carriage being re-numbered W1116W in accordance with normal practice.<ref name=Longworth/>

In 1965, 1116 was one of 9 coaches withdrawn from passenger service to and transferred into [[Carriage and Wagon numbering# Internal User vehicles|Internal User stock]] to form a test train, based at Swindon, which was used for load testing of diesel locomotives. For this role it received the Internal User number 079157, numbers in that range signifying Departmental Coaching stock within the Western Region that did not normally move or had its movements confined to a particular depot or yard. All four of the SVR TKs also formed part of the Swindon GWR test train.<ref>[[Bibliography#Other References|Longworth (2013)]] p.172.</ref>

The entire 9-coach test train was sold into preservation in 1969, with the four coaches TKs and [[GWR 7284 Composite|Corridor Composite 7284]] being bought for the SVR and the others by for the GWS at Didcot. 1116 All five arrived on 9 the SVR on 19 December.<ref>SVR Stock Book Ninth Fifth Edition</ref> The four acquired by the SVR were restored between 1970 and 1973, and saw service on [[The Severn Valley Railway on the main line#SVR Carriages used on the main line | SVR excursions on the main line]] as well as on the SVR itself. Heritage carriages used on the main line were assigned TOPS numbers, with 1116 being number 99231.<ref>Railway Heritage Register Carriage Survey</ref>