11230 arrived on the GWSR in 2003 and is now working at Toddington with its restoration almost complete.
- Wheel arrangement: 0-6-0
- Origin: One of a pair of Drewry industrial shunters that worked most of their lives at the Willington power station, it has been restored to represent a member of British Railways' 04 Class in its original livery and numbering system.
- Engine/power: Gardner 8-cylinder, 4-stroke 8L3 of 204 hp. Wilson-Drewry CA5 R7, 5-speed epicyclic gearbox and jackshaft drive.
- Length over buffers: 26ft. ½in. (7.94m)
- Working weight: 29 tons
- Maximum speed: 28 mph