Changes

General Utility Van (GUV) 94157 was originally numbered 86523 when built by BR in 1958 at St Rollox.<ref>[[Bibliography#Other References|Longworth (2013)]] p.201.</ref> It was entered service in December 1958 as part of a batch of standard GUVs shared between York and Glasgow , for which it carried the number M86523. It subsequently gained had a TOPS classification of NJV, 'V' indicating that it was vacuum braked but and 'J' fitted for electrical train heating.

Rolling stock in the 86nnn range was renumbered under TOPS in the 1980s, possibly to prevent confusion by clerical staff with numbers issued to Class 86 diesel locomotives, and M86523 became M93523 in March 1984.<ref>[[Bibliography#Other References|Longworth (2013)]] p.222.</ref> A rebuild for use as a containerised mail van (100 mph) resulted in a further renumbering as 95157 in June 1992,<ref>[[Bibliography#Other References|Longworth (2013)]] p.236.</ref> later renumbered as 94157 in September 1994.<ref>[[Bibliography#Other References|Longworth (2013)]] p.232.</ref> This configuration included roller shutter doors, steel floors and plated over windows; the TOPS code NKA also indicating fitting with air brakes only<ref name=SVR155>SVR News 155</ref> It is equipped with commonwealth bogies.<ref>Railway Heritage Register Carriage Survey</ref>