Ex works June 1943. Built to Ministry of Supply order for an amour plate factory near Barnsley. Post war to Atlas and Norfolk steel works of Sheffield and then to Cohens of Stanningley. It then was bought for preservation and worked on Middleton Railway until its withdrawal in 1980.

Grosmont Iron works was owned by the loco owners Bagnall, providing some of the loco works steel requirement. Grosmont would have been familiar with and used Bagnall equipment. 

Overhaul of the Boiler will be carried out at Grosmont MPD, the locomotives frames will be overhauled at the owners premises and then transferred to the NYMR once completed for the locomotives final assembly,