Bachmann 39-001S

Mk1 BSK BR Research Department RTC "Test Car 5" ADB975051

Manufacturer catalogue image - please note that pre-release images may be CAD renders or CGI/AI images rather than photographs

Prototype Eras
Era 7 (1972 to 1982) British Rail Blue (TOPS)
Era 8 (1983 to 1994) British Rail Sectorisation

Manufacturer description

Exclusive to Rails of Sheffield

This exclusive release of Bachmann’s Mark 1 coach represents BR’s Railway Technical Centre coach ‘Test Car 5’ (RDB975051). Converted in late 1972 from a standard BSK coach, this vehicle spent several years in use with the Research Department, including a spell used as a support vehicle for testing the Advanced Passenger Train (APT) power cars.

A perfect accompaniment for our other recently announced RTC Limited Edition - 39-001V - Laboratory 12, also available to order now.

Mark 1 Coach History

BR Mark 1 coaching stock was the first standardised design of railway carriages built by British Railways (BR) post-nationalisation in 1948, the family of locomotive hauled passenger coaches being constructed from 1951 until 1963 to augment and replace the array of ‘Big Four’ and earlier ‘pre-grouping’ designs inherited from the LMS, LNER, GWR and SR. Non-passenger carrying Mk1s and multiple units based on the Mk1 concept continued in production until 1974.

Today, Mk1 coaches are used for charter services on the main line, by the likes of West Coast Railway Company, or on preserved railways such as the Severn Valley Railway, West Somerset, North Yorkshire Moors, East Lancashire and Spa Valley lines, to name but a few.

Mk1 coaches were built at many BR workshops as well as by outside contractors including Metro-Cammell, Cravens, and Gloucester RCW. An extensive range of vehicles was introduced to cover all manner of traffic demands and mixed uses that the railway took in its stride in the 1950s: from buffet counter catering to full restaurant service, First and Second Class accommodation including composite vehicles with some of each, guards’ brake vans and luggage/ newspapers/ parcels/ animal space, sleeping cars, various general merchandise and specialised Post Office vans and niche use vehicles constructed in small numbers such as horse boxes. These non-passenger vehicles were shorter in length (usually at 57 feet) than the standard 63 feet of their passenger counterparts.

The more common types that made up the majority of express and secondary passenger trains include First and Second Class, Composite, Open and Corridor, Suburban (compartment only), Brake, Buffet, Restaurant, and Sleeping cars. The study of prototypical train formations is an entire subject, and Bachmann Branchline provides the range of models to create these trains in model form.

During their working lives, Mk1 coaches have formed the backbone of all locomotive-hauled BR services at one time or another, until replacement by later Mk2 coaches, or multiple unit stock, in the case of many of the Mk1 Suburban non-corridor fleet. Many famous named trains such as the Flying Scotsman, Belfast Boat Express (a late steam turn that lasted into 1968), The Cornishman, Irish Mail, Thames-Clyde Express, Atlantic Coast Express (ACE), The Waverley, the Caledonian, Devonian, Mayflower and Master Cutler all comprised Mk1 coaches when newly introduced. In other cases they ran within or alongside train formations such as the Yorkshire Pullman, and made up the then numerous sleeper services that covered the length and breadth of the sixties railway network during the hours of darkness.

Loco-hauled Mk1s were in front line service for half a century, whilst their EMU counterparts and Thumper units lasted until the mid-2000s. As a result, the Mk1 family has carried the widest range of liveries of any passenger rated rolling stock, with only private owner wagons presenting a greater variety in UK railway history. Mk1s have worn BR Carmine and Cream, BR Western Region Chocolate and Cream, BR Southern Green, BR Maroon, BR Blue, Blue and Grey, InterCity Executive, InterCity Charter, Network South East, Regional Railways, ScotRail, Sealink, Departmental, BR Exhibitions, Royal Mail, Travelling Post Office, Rail Express Systems, Provincial Trans Pennine, Parcels Red, West Highland Green and Cream, not to say a myriad of post-privatisation and heritage colour schemes in preservation. Many Mk1s also found further use with the engineers and Research Departments, and these departmental uses are also presented in the range.

Catalogue listing

Brand
Bachmann
Product Code
39-001S
RRP
£59.95
Release date
May 2026
Limited edition model for
Rails of Sheffield

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Bachmann Mk1 BSK BR Research Department RTC “Test Car 5” (model number ADB975051) is a limited‑edition model released under the Rails of Sheffield range. The manufacturer part number is 39‑001S and the livery represented is British Rail Blue (TOPS).

This exclusive release reproduces the Railway Technical Centre coach known as “Test Car 5”, which was converted from a standard BSK coach in late 1972. The vehicle spent several years with the BR Research Department, including service as a support unit for testing the Advanced Passenger Train (APT) power cars.

The model forms a matching pair with the recently announced RTC Limited Edition 39‑001V – Laboratory 12, which is also available to order.

Mk1 coaches were the first standardised British Rail carriage design introduced after nationalisation in 1948, built between 1951 and 1963 and later used by heritage railways and charter operators. The Test Car 5 variant reflects the departmental use of Mk1 stock by the Research Department.

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