GWR 2501 'Rotank' 6-Wheeled Road Milk Tank Flat Wagon

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GWRGreat Western Railway 2501 'Rotank' 6-Wheeled Road Milk Tank Flat Wagon
Built By GWRGreat Western Railway Swindon
Status Stored off site
Number 2501
Other Numbers W2501W, DW150142
Built 1932
Designed By CollettCharles Benjamin Collett, Chief Mechanical Engineer (CME) of the Great Western Railway 1922-1941
Diagram O37
Lot 1485
Type 6-wheel milk tank trailer truck
Telegraphic code ROTANK

Goods Wagons

2501 is a GWRGreat Western Railway 6-wheel milk tank trailer truck. It was a flat wagon used to carry road/rail milk tanks, giving rise to the telegraphic code ROTANK.


2501 was the first of 15 such vehicles built by the GWRGreat Western Railway between 1932 and 1936. It was one of three built in 1932 as Lot 1485 to Diagram O37 (this is a Coach series diagram number, the vehicles being classified as Non Passenger Carrying Coaching Stock).[1] It was used by the Co-Operative Wholesale Society.[2]

After nationalisation, 2501 continued in use with BRBritish Rail or British Railways(W) as number W2501W. In July 1957 it was re-numbered DW150142, having been converted by BRBritish Rail or British Railways for DepartmentalRolling stock used for the railway’s own functions (engineering etc.) rather than for general passenger or goods traffic. use as a mobile fuel tank carrier at Reading Depot.[3][4]


2501 is now owned by The GWR 813 Preservation Fund. In recent years it has been stored at a private site in Evesham. The BRBritish Rail or British Railways fuel tank modifications have since been removed.[2]

In January 2019 it was announced that the Fund’s 6-ton hand crane would move to Arley for cosmetic restoration as a static display, while its existing BR-built crane runner was to be swapped with 2501, a GWRGreat Western Railway flat wagon that would better suit the crane.[5] In March 2019 the crane and runner were moved to Bewdley and in May to Arley.

See also


  1. Longworth (2018) p.145.
  2. 2.02.1 GWRGreat Western Railway 813 Fund
  3. Longworth (2018) p.169.
  4. Railway Heritage Register Wagon Survey
  5. SVRSevern Valley Railway Wagons Facebook 13 January 2019