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.

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Didcot Railway Centre

Locomotives 5051, 29 (visiting), 2999, 3738, and others sitting in front of the engine shed.
Location in Oxfordshire
Established	1967
Location	Didcot, Oxfordshire, England
Coordinates	51°36′49″N 1°14′41″W
Type	Operational Railway museum
Key holdings	GWR 6000 Class No.6023 King Edward II GWR 4073 Class No.4079 Pendennis Castle GWR Firefly Class Firefly
Owner	Great Western Society (site leased from Network Rail)
Public transit access	Didcot Parkway
Website	Didcot Railway Centre

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The founders and commercial backers of the Great Western Railway (GWR) supported Isambard Kingdom Brunel's scheme to develop an integrated railway and steamship service which allowed trans-Atlantic passengers and freight quicker passage between London and New York City. However, whilst backing the scheme the railway had to make a profit, and so it took a number of detours and added both mainline and branch line traffic to increase its domestic earnings. This earned the railway the nickname The Great Way Round from its detractors.^[1]

Whilst the route from London Paddington to Reading was relatively straight, the then obvious most direct route to Bristol would have taken the railway further south, thus avoiding both Didcot and Swindon. However, passenger and freight traffic both to and from Oxford and onwards to the West Midlands in part dictated a more northerly route. Also, Brunel had originally planned to cut through Savernake Forest near Marlborough, Wiltshire to Bristol, but the Marquess of Ailesbury, who owned the land, objected – having previously objected to part of the Kennet and Avon Canal running through his estate (see Bruce Tunnel). With the railway needing to run near to a canal at its midpoint – as it was cheaper to transport coal for trains along canals at this time – and with the need for the branch northwards to Cheltenham via Stroud, Swindon was the next logical choice for the junction (and later railway works), 20 miles (32 km) north of the original route. This dictated that the Oxford junction also be moved northwards, and hence via Didcot.^[1] The Great Western Railway built the first rail line through Didcot in 1839 and opened its first station in 1844.

The Great Western Society (GWS) was offered the use of the former Didcot locomotive depot, taking it over in 1967. In the 1970s, the society negotiated a long-term lease with BR which was to expire in 2019. But this was subject to a six-month termination clause which could force the GWS to quit the site, and which could be operated at any point in time by lease-holder Network Rail (NR).

In an attempt to secure a long-term future for the society, in 2002 the GWS opened negotiations with NR to either purchase the site or extend the lease. In a letter dated May 2007, NR informed the GWS that they were prepared to sell the site subject to Office of Rail Regulation (ORR) approval. It had been thought the site could be subject to need as a depot, either due to: the rebuilding of Reading station; a Crossrail project depot; or the Intercity Express Programme. After expressing some concern at the slow speed of negotiations at the GWS annual meeting in September 2008, NR wrote to the GWS to advise that the site was no longer available for sale, and although a lease extension was still on offer it was still subject to the previous six-month termination clause. The GWS then wrote to their local MP Ed Vaizey, and placed any long-term development plans on hold.^[2] As of 6 October 2011^[update] Richard Croucher (Chairman of the Great Western Society) signed a new 50-year lease with Network Rail, therefore preserving the site for at least another 50 years.

Today the GWS have developed the site, which still retains many of the original GWR buildings and features, as both a working steam locomotive and railway museum, engineering maintenance centre, and railway line offering short rides to visitors.

Access via Didcot Parkway station brings the visitor into the southern end of the site, at the start of the ramp coal wagons would take up to the coaling stage. Beyond this is the original 1932 four-road engine shed, and beyond this the original repair shed and 1988 constructed locomotive works, both of which have restricted access due to safety concerns. Beyond this lies a Ransomes & Rapier 70 feet (21 m) turntable, originally built for the Southern Railway at Southampton Docks, installed in the original pit.

The centre regularly holds events such as steam and diesel railcar days. Members of the Great Western Society have been active in the preservation of locomotives and rolling stock. Certain 'new-build' projects to create locomotives that did not escape wholesale scrapping have also been undertaken at Didcot, such as the completed Firefly locomotive, a 'Saint' class (using a 'Hall' class chassis and boiler) and a 'County' class locomotive (using a 'Hall' class chassis and an LMS '8F' class boiler).

There is a small relics museum and archive on site, operated by the Great Western Trust.^[3]

The Railway Centre is used a period film set and has featured in works including Anna Karenina, Sherlock Holmes: A Game of Shadows, and The Elephant Man.^[4]

v t e Railways around Didcot
Legend
Great Western Main Line to Paddington Moreton Junction Main to relief line crossovers Didcot, Newbury & Southampton Railway Didcot East Junction Didcot Parkway Didcot Railway Centre Didcot West Junction Cherwell Valley line to Oxford Didcot North Junction Foxhall Junction Didcot Power Station Milton Park Great Western Main Line to Swindon

The railway centre is entirely surrounded by active railway lines and has no road connection of any kind. Public access is on foot from a subway at Didcot Parkway station, which links the centre by rail to London and much of southern and central England. Wheelchair and pram access has been difficult due to the presence of a flight of concrete steps on Network Rail property. To comply fully with the Disability Discrimination Act, the Great Western Society began construction of a ramped access in 2023.^[5]