| B&ER 4-4-0ST | |
| Powertype: | Steam |
| Driverdiameter: | 5feet |
| Leadingdiameter: | 3feet |
| Wheelbase: | 18feet |
| Cylindersize: | dia × stroke |
| Gauge: | 7feet |
| Builder: | various |
The 26 Bristol and Exeter Railway 4-4-0ST locomotives were broad gauge steam locomotives. They first entered service in 1855 and the last was withdrawn in 1892. The Bristol and Exeter Railway was amalgamated into the Great Western Railway on 1 January 1876.
The locomotives were built in four batches, each by a different builder, with variations between them, noticeably in the size of the saddle tank.
Five locomotives built by Rothwell and Company with 1100impgal gallon saddle tanks and 18inchesft4inchesin (ftin) wheelbase.
Four locomotives built by Beyer Peacock with 1280impgal saddle tanks and 19inchesftNaNinchesin (ftin) wheelbase.
Ten locomotives built by the Vulcan Foundry with 1280impgal saddle tanks and 19inchesftNaNinchesin (ftin) wheelbase, the same as the Beyer, Peacock locomotives built five years earlier.
Six locomotives built by the Avonside Engine Company with 1440impgal saddle tanks and 18inchesft4inchesin (ftin) wheelbase.
No. 2051 was withdrawn following a fatal collision at Norton Fitzwarren railway station in Somerset while working a special ocean mail train from Plymouth on 11 November 1890.