Locomotives 5051, 29 (visiting), 2999, 3738, and others sitting in front of the engine shed. / 51.613509°N 1.244772°W / 51.613509; -1.244772. Didcot Railway Centre is a railway museum and preservation engineering site in Didcot, Oxfordshire, England. The site was formerly a Great Western Railway engine shed and locomotive stabling point.