Muir-Hill
Muir Hill (Engineers) Ltd, Old Trafford, Manchester, started in the early 1920's. Amongst other products they built rather basic petrol engined locomotives, mainly for narrow gauge. The early locos were little more than a Fordson tractor skid mounted on a rail chassis, with a chain connecting the rear axle of the tractor to the rail wheels.
Production of locos did not continue into the 1930's; the company went on to build heavy tractors and constructional equipment.
Amongst users of Muir Hill locos were the slate quarries of Blaeneau Festiniog, and the Ravenglass & Eskdale Railway (who still have two).