GWR 0-6-0PT

The GWR 0-6-0PT (pannier tank), is a type of steam locomotive built by the British Great Western Railway with the water tanks carried on both sides of the boiler, in the manner of panniers.

They were used for local, suburban and branch line passenger and goods traffic, for shunting duties, and as banker engines on inclines.

The early examples, such as the 1901 and 2021 classes, were rebuilt from saddle or side tanks when the locos received a Belpaire firebox – this type of firebox has a square top and is incompatible with a curved saddle tank.

This process mostly took place during the tenure at Swindon Works of George Jackson Churchward.

Only a very small number of saddle tank locomotives escaped rebuilding as panniers, notably the 1361 Class built new under Churchward in 1910, by which date a few of the 1813 Class had already been rebuilt as pannier tanks.

1366 Class No. 1367 at Weymouth in May 1961
An old design recreated by Hawksworth: No. 1638 (built after Nationalisation) preserved on the Kent & East Sussex Light Railway
Ex-GWR 5700 class, London Transport No. L95 shunts at Croxley, 1969
Another B.R. pannier in an unhistorical green livery: post-1948 No. 9466 at Tyseley
6400 Class No. 6412 hauling an autocoach on the West Somerset Railway, October 2000
1366 Class No. 1369, Oldland Common railway station