The Great Western Railway (GWR) was a British railway company that linked London with the southwest, west and West Midlands of England and most of Wales. It was founded in 1833, received its enabling Act of Parliament on 31 August 1835 and ran its first trains in 1838 with the initial route completed between London and Bristol in 1841. It was engineered by Isambard Kingdom Brunel, who chose a broad gauge of 7 ft —later slightly widened to 7 ft 1⁄4 in —but, from 1854, a series of amalgamations saw it also operate 4 ft 8+1⁄2 in standard-gauge trains; the last broad-gauge services were operated in 1892.
The first Locomotives of the Great Western Railway (GWR) were specified by Isambard Kingdom Brunel but Daniel Gooch was soon appointed as the railway's Locomotive Superintendent. He designed several different 7 ft 1⁄4 in broad gauge types for the growing railway, such as the Firefly and later Iron Duke Class 2-2-2s. In 1864 Gooch was succeeded by Joseph Armstrong who brought his standard gauge experience to the workshops at Swindon. To replace some of the earlier locomotives, he put broad gauge wheels on his standard gauge locomotives and from this time on all locomotives were given numbers, including the broad gauge ones that had previously carried just names.
The Great Western Railway (GWR) Ariadne Class and Caliph Class were broad gauge 0-6-0 steam locomotives designed for goods train work by Daniel Gooch and are often referred to as his Standard Goods locomotives.
The Banking Class were five 0-6-0ST Brunel gauge steam locomotives for assisting ("banking") trains up inclines on the Great Western Railway. Designed by Daniel Gooch, they were tank engine versions of his Standard Goods class, and mainly built at Swindon Works.
The Great Western Railway Pyracmon Class were 0-6-0 broad gauge steam locomotives for goods train work. This class was introduced into service between November 1847 and April 1848, and withdrawn between August 1871 and December 1873. Bacchus was added to the class in May 1849, having been constructed to broadly the same design from spare parts.
The Great Western Railway Premier Class 0-6-0 broad gauge steam locomotives for goods train work. This class was introduced into service between February 1846 and May 1847, and withdrawn between March 1866 and June 1872.
The Great Western Railway Metropolitan Class2-4-0T broad gauge steam locomotives with condensing apparatus were used for working trains on the Metropolitan Railway. The equipment was later removed, though the class continued to work suburban trains on GWR lines in London. The class was introduced into service between June 1862 and October 1864, and withdrawn between June 1871 and December 1877.
The Great Western Railway Victoria Class were 2-4-0 broad gauge steam locomotives for passenger train work. This class was introduced into service in two batches between August 1856 and May 1864. They were all withdrawn between 1876 and December 1880.
The Great Western Railway Waverley Class were 4-4-0 broad gauge steam locomotives for express passenger train work.
The Great Western Railway (GWR) Bogie Class4-4-0ST were broad gauge steam locomotives for passenger train work. The first two locomotives of this class were introduced into service in August/September 1849, with the remainder following between June 1854 and March 1855. All but one were withdrawn between October 1871 and 1873, with the final locomotive being withdrawn in December 1880.
The Great Western Railway Prince Class 2-2-2 broad gauge steam locomotives for passenger train work. This class was introduced into service between August 1846 and March 1847, and withdrawn between January and September 1870.
The Great Western Railway Iron Duke Class 4-2-2 was a class of 7 ft 1⁄4 in broad gauge steam locomotives for express passenger train work.
The Great Western Railway Sir Watkin Class were 0-6-0T broad gauge steam locomotives. They were designed for working goods trains through to the underground Metropolitan Railway in London. This class was introduced into service between December 1865 and the last was withdrawn at the end of the GWR broad gauge in May 1892. They were all named after directors and senior officers of the railway.
The Great Western Railway Swindon Class 0-6-0 broad gauge steam locomotives for goods train work. This class was introduced into service between November 1865 and March 1866, and withdrawn between June 1887 and the end of the GWR broad gauge in May 1892. The entire class was sold to the Bristol and Exeter Railway between July 1872 and September 1874, where they were numbered 96-109, but returned to the GWR when that railway was absorbed. The locomotives were then renumbered 2077-2090; their names were not restored.
The eight Dido class locomotives were 0-6-0ST broad gauge locomotives operated on the South Devon Railway and Cornwall Railway and associated other adjacent railways. They were designed for goods trains but were also used on passenger trains when required.
The GWR 3501 Class were ten broad gauge 2-4-0 locomotives built by the Great Western Railway.
The GWR 388 class was a large class of 310 0-6-0 goods locomotives built by the Great Western Railway. They are sometimes referred to as the Armstrong Goods or Armstrong Standard Goods to differentiate from the Gooch Goods and Dean Goods classes, both of which were also large classes of standard goods locomotives.
The 3521 Class were forty tank locomotives designed by William Dean to haul passenger trains on the Great Western Railway. They were introduced as 0-4-2T locomotives in 1887, but were quickly altered to become 0-4-4Ts to improve their running. Following two serious accidents they were further altered from 1899 to run as 4-4-0 tender locomotives, in which form the last was withdrawn in 1934.
The Hercules Class were four broad gauge steam locomotives for the Great Western Railway. They were the first 0-6-0 locomotives, being built in 1842 by Nasmyth, Gaskell and Company.
The GWR 378 Class was a class of 30 standard-gauge 2-2-2 steam locomotives on the Great Western Railway in Britain. They were introduced in 1866, and the class remained intact until 1898. Several were altered to the 0-6-0 wheel arrangement, and the last was withdrawn from service in 1920.
