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}}'''GWR Corridor Composite (TK) 1086 ''' is one of four 1938-built Collett Corridor Third (TK) such coaches on the SVR, along together with [[GWR 1087 Full Third |1087]], [[GWR 1116 Full Third |1116]] 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 included large picture windows to replace the external door to every compartment, with 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>[[Bibliography#Other References|Harris (1966)]] p. 104.</ref> These particular coaches have 8 compartments each seating 8 passengers, plus a toilet at each end of the coach.

After 1086 continued in passenger service, 1086 was renumbered 079154 in the BR Western region until April 1965<ref>, when it withdrawn and transferred into [[BibliographyCarriage and Wagon numbering#Other ReferencesInternal User vehicles|Longworth (2018)Internal User stock]] p.172.</ref> and also 99234<ref>Railway Heritage Register Carriage Survey</ref>. The former Internal User as number signified Coaching stock within the Western Region that did not normally move or had its movements confined to a particular depot or yard079154. The latter number signifying hauled non-passenger carrying use; all four of the SVR TKs It then formed part of the GWR's 9-coach '''Swindon GWR test train ''', further details of which was used for load testing of diesel locomotivesmay be found under [[GWR 1146 Full Third |1146]].

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 arriving on 19 December. All four Full Thirds were restored between 1970 and 19731974, 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]] in the mid to late 1970s (for which 1086 received [[TOPS codes|TOPS Code]] 99234) as well as on the SVR itself. The coach was also used in Carlton's made-for-TV movie '[[Goodnight Mister Tom]]' in 1998 along with two other Great western coaches.

1087 1086 is in service and is normally used in [[Carriages#The carriage sets|set GW]]. It is finished in GWR 1934-42 livery featuring the ‘shirt-button’ roundel, and is owned by a [[Great Western (SVR) Assoc. | Great Western (SVR) Association]] member<ref>[http://www.gw-svr-a.org.uk/stock_list.html The Great Western (SVR) Association stock list] (Retrieved 10 October 2019)</ref>.