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[[File:{{Infobox carriage|image = BR_25686_20150307.jpg |thumbcaption = BR Corridor Second 25686|300pxconstruc = BR Wolverton|rightstatus = Static use| BR Corridor Second carno = 25686|livery = Green (unlined)|othernos = M25686, W25686, W18686|designed = |diagram = 146|lot = 30426|cartype = [[:Category:Carriage Type SK|SK]]|topscode = [[:Category:Carriage Type SK|AA21]]|seats = 64 (as built)|built = 1958|years1 = 1986|events1 = Entered preservation|years2 = |events2 = |years3 = |events3 = |years4 = |events4 = |years5 = |events5 = |years6 = |events6 = }}The BR Mark 1 Corridor Second (SK) 25686 was the most prolific of the Mark 1 passenger stock, with more than 2,200 built at Wolverton . Those in 1958 to diagram number 146 of lot number 30426the Western and Southern regions seated eight per compartment, while those on Midland and Eastern routes seated six per compartment. Early examples featured veneered walls, while later batches used formica laminates. The SKs were an early candidate for withdrawal, being replaced by Mark 2 Open, HST sets and Networker Turbo units<ref name = StockBook>SVR Stock Book 9th edition</ref><ref name = SVRCT>SVR Charitable Trust</ref>.

==Service and preservation==25686 arrived on was built at Wolverton in 1958 to Diagram 146 (AA201), Lot 30426. It entered service in the London Midland region in 1958, transferring to the SVR Western region in December 1986 from Old Oak CommonJune 1981. It is owned by In September 1983 it was renumbered W18686<ref>[[Severn Valley Railway (Holdings) PLC Bibliography#Other References| SVRLongworth (H2013)]] and is one of four such coaches used for staff accommodation at Bridgnorthpp.143-4, 119.</ref>

25686 arrived on the SVR on 11 December 1986 from Old Oak Common. It is owned by [[Severn Valley Railway (Holdings) PLC | SVR(H)]]<ref name = StockBook/> and is one of four such coaches converted for use as staff accommodation at [[Bridgnorth]], where it can be seen in "George's siding" adjacent to Platform 1. ==See also=Sources=*[[Carriages#BR Designed Coaches | List of carriages]] ==References==Railway Heritage Register Carriage Survey<brreferences />SVR Stock Book Ninth Edition

*[http://www.cs.vintagecarriagestrustrhrp.org.uk/se/CarriageInfo.asp?Ref=1773 25686 on vintagecarriagestrust.orgRailway Heritage Register On-Line]<br>