Code | Builder Name | Location |
AB | Andrew Barclay, Sons & Co. Ltd., Kilmarnock | |
AW | Armstrong Whitworth | |
AS | Ashford Works (British Railways) | |
AD | Ashford Works (Southern Railway) | |
BA | Bagnall | |
BY | Barclay | |
BM | Beardmore, Dalmuir, Glasgow | |
BP | Beyer Peacock Ltd. | |
BC | Birmingham Railway Carriage & Wagon Company | |
BN | Brighton Works (British Railways) | |
BW | Brighton Works (SR) | |
BR | British Railways | |
BE | British Railways Engineering Ltd. | |
BT | British Thompson Houston Co. Ltd. | |
BB | Brown Boveri, Switzerland | |
BH | Brush Traction, Loughborough | |
CL | Clayton Equipment Co. Ltd., Hatton, Derby | |
CR | Crewe Works (British Railways) | |
CW | Crewe Works (LMS) | |
DA | Darlington Works (British Railways) | |
DT | Darlington Works (LNER) | |
DE | Derby Works (British Railways) | |
DL | Derby Works (LMS) | |
DO | Doncaster Works (British Railways) | |
DN | Doncaster Works (LNER) | |
DR | Drewry Car Co. Ltd. | |
EA | Eastleigh Works (British Railways) | |
EH | Eastleigh Works (SR) | |
EL | Electroputere, Craiova, Romania | |
EE | English Electric Vulcan Foundry | |
EP | English Electric, Preston | |
FE | Fell Developments Ltd. / BR Derby | |
FO | Fowler | |
GA | General Motors - Alstom at Valencia, Spain | |
GC | General Motors EMD, London, Ontario, Canada | |
GM | General Motors, La Grange, Illinois, U.S.A. | |
GO | Gorton Works (British Railways) | |
HL | Hawthorne Leslie | |
HO | Horwich Works (British Railways) | |
HW | Horwich Works (LMS) | |
HC | Hudswell Clarke | |
HU | Hunslet Engineering Co. Ltd. | |
KS | Kerr Stuart | |
KI | Kitson | |
MV | Metropolitan Vickers | |
NW | Nasmyth Wilson | |
NB | North British Locomotive Company, Glasgow | |
RS | Robert Stephenson & Hawthorn Ltd,Darlington | |
RR | Rolls Royce | |
RH | Ruston & Hornsby, Lincoln | |
SE | Sentinal | |
SI | Simpex, Bedford | |
SA | Southern Railway - Ashford & Brighton Works | |
SR | St. Rollox (LMS) Glasgow | |
ST | Stratford Works (LNER) | |
SW | Swindon Works (British Railways) | |
SN | Swindon Works (GWR) | |
TH | Thomas Hill | |
VF | Vulcan Foundry | |
WW | Wolverhampton Works (GWR) | |
YE | Yorkshire Engine Company | |
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