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==Service and preservation==81013 was built at York in 1956 to Diagram 711 (NB501), Lot 30173. The 'NB' signified a Gangwayed Brake used for BRUTE purposes. It entered service The majority of BR Mark 1 coaches had underframes 63ft 5in in length but a smaller number were built on 56ft 11in underframes; these were intended for use where the Eastern region in August 1956, being renumbered E84013 in June 1983 as part of a modification track curvature was too tight to accommodate the TOPS numbering system, before being withdrawn from service in July 1986longer vehicles.<ref>[[Bibliography#Other References|Longworth (2013)]] phttps://en.191, pwikipedia.9org/wiki/British_Railways_Mark_1 Wikipedia]</ref> 81013 is one such example.<ref>Carriage data plate</ref>

It entered service as E81013 in the Eastern region in August 1956, unusually carrying unlined carmine livery.<ref name=SVR87>SVR News 87/88</ref> It was renumbered E84013 in June 1983 as part of a modification to the TOPS numbering system, before being withdrawn from service in July 1986.<ref>[[Bibliography#Other References|Longworth (2013)]] p.191, p.9.</ref> ==Preservation==84013 arrived on the SVR from Thornton Fields via Ely in on 4 November 1987 having been acquired by [[SVR(H) ]] in response to a request from Arley for two BGs to be converted for use as [[Santa's Grotto|Santa's Grottos]].<ref>SVR Stock Book 9th Edition</ref><ref>SVR News 87/88<name=SVR87/ref>

It was re-modelled and repainted 81013 came in for another overhaul in August 2011. On this occasion it was decided to remove a number of doors which were not required for grotto use purposes, including removal both to reduce the overhaul time and plating over provide a number of doors for spares. All 18 doors were removed and assessed, with the best 10 being reinstalled and the other 8 retained for use elsewhere. The two redundant pairs of double doors on each sidewere panelled in with 16 gauge steel sheets, each braced by five horizontal angle bars. It The interior of the windows and the blanked doors were boarded over to become flush with the tongue and groove planked walls which were painted white. Later at Arley, the interior was decorated with alpine scenery painted by artist [[Paintings of the Severn Valley Railway#John Austin|John Austin]].<ref>SVR News 176</ref> 81013 is in Post Office Maroon livery, and is normally stored at Kidderminster, being used as the middle carriage of the ‘[[Santa's Grotto]] ’ set at [[Arley]] during Decemberuntil 2018, with alternative [[Christmas services]] arrangements brought in from 2019. It is owned by [[Severn Valley Railway (Holdings) PLC | SVR(H)]].

*[http://www.cs.vintagecarriagestrustrhrp.org.uk/se/CarriageInfo.asp?Ref=2101 81013 on vintagecarriagestrust.orgRailway Heritage Register On-Line]