The 20 Bristol and Exeter Railway 4-2-2 locomotives were broad gauge 4-2-2 express steam locomotives built for the Bristol and Exeter Railway by the Stothert and Slaughter in Bristol.
The Bristol and Exeter Railway was amalgamated into the Great Western Railway on 1 January 1876 and eight 4-2-2s survived at this time, the last being withdrawn in 1889.
Three of the infamous 4-2-4T locomotives were rebuilt by the Great Western Railway in 1877 as 4-2-2 tender locomotives.
The Bristol and Exeter Railway's first express passenger locomotives, similar in appearance to the GWR Iron Duke Class.
Following rebuilding as 4-2-2 tender locomotives at Swindon, the three remaining 8 feet 10 inch 4-2-4T locomotives had slightly smaller 8 feet diameter driving wheels and worked alongside the rigid-framed GWR Rover class and the remaining 1849-built ex-Bristol and Exeter Railway 4-2-2 locomotives on express passenger trains.