This coach was built in Derby for the Midland Railway in 1904 as a Steam Rail Motor, it was a self propelled carriage with a boiler and steam engine in one end to drive it along. As an exercise in cost cutting on branch lines, it was ahead of its time and only lasted as a passenger rail motor until 1907, when it was converted into an Officers Saloon for directors and officials to observe the railway network from. In 1917 the boiler and engine were removed and it then was hauled by a conventional locomotive across the network when lines needed inspecting or special visits were made. It was preserved in 1968 and became a holiday home in Mid Wales until the NRM bought it in the late 1970s. It is unique as the only surviving steam rail motor coach from the Midland Railway. It is mahogany and teak and the rooms are as they were when it was an Officers Saloon. It has come to Chain Bridge Honey Farm from the National Railway Museum due to insufficient space, time or resources to ensure the vehicles future.