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You are here: Rail UK > Home > Steam >  Getsteam

British Railway Steam Locomotive

Please read this statement on the accuracy of the data shown below

Number	426 a
2nd Grouping Number
1st Grouping Number	gwr 426
2nd Pre Grouping Number
1st Pre Grouping Number
Works/Lot Number
Class Code	B_M-A
Designer	Dunbar
Built	31/03/1914
Builder	Robert Stephenson and Company
1948 Shed	86B Newport Pill
Last Shed	86D Llantristant
Withdrawn	31/03/1950
Disposal details
Disposal
Disposal Date	Unknown

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Built 1909-14. Designed by Dunbar.

Total Number Built 8 Total to BR 8.

Introduced December 1909. Dunbar design for Brecon & Merthyr, built by Robert Stephenson Co.

(a) 421-423 and 426 were reboilered by Great Western Railway with taper boiler superheated in 1924, 1929, 1924 and 1941.

424-425 and 428 were rebuilt with Rhymney Railway parallel boiler in 1941, 1936 and 1947.

427 retained its B&MR parallel boiler.

Number Series allocated 421-428 (B&MR Nos. 36-43).

The locos were renumbered by BR from 11, 21, 332, 504, 698, 888, 1084, 1113, although 11, 332, 504 and 1084 never carried their new numbers.

Built at Robert Stephenson's & Co. Ltd. Works - Works Numbers 3379-3382, 3577-3580.

421-424 Lot No. E59 1909.
425-428 Lot No. E91 1914.

The first loco withdrawn was made by the GWR with 427 (1084) in November 1947 from Newport Pill shed.
The first BR withdrawal was 424 (504) in January 1948 also from Newport Pill shed.
Other withdrawals by BR were 421 (11) in January 1949 from Newport Pill shed, 423 (332) in December 1949 from Severn Tunnel shed, 426 (888) in March 1950 from Llantrisant shed, 422 (21) in June 1950 from Severn Tunnel shed and 428 (1113) in August 1950 from Port Talbot Duffryn Yard shed.
The last loco withdrawn was 425 (698) in January 1951 from Cardiff Canton shed.
None are preserved.

Motive Power Details

(a) Introduced 1923. Reboilered by GWR with taper boiler superheated.

Weight: Loco 66 tons 19 cwt ; 62 tons 10 cwt (a)
Driving Wheel: 4' 6"
Boil Press: 175lb/sq in NS
Cylinders: Two 18?" x 26" (inside)
Valve Gear: Stephenson (slide valves)
TE: 24,520 lb

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Region/Number Number Grouping 1 Grouping 2 Pregroup Number 1 Pregroup Number 2 Class 1948 Depot Last Depot Build Date Build Date Desc Withdraw Date Withdraw Date Desc Disposal Date Disposal Date Desc Scrapyard Builder/Works Builder/Number