Motor Rail

A 20/28 hp plate-frame Simplex built in 1941, running at the Moseley Railway Trust
Simplex 40 hp armoured 600 mm (1 ft 11+58 in) gauge, built for the British Army for World War I
Two models of Simplex locomotive at Alan Keef's works, 1999
Red Rum at Leighton Buzzard Narrow Gauge Railway

Motor Rail was a British locomotive-building company, originally based in Lewes, Sussex, they moved in 1916 to Bedford. Loco manufacture ceased in 1987, and the business line sold to Alan Keef Ltd of Ross-on-Wye, who continue to provide spares and have built several locomotives to Motor Rail designs.