This locomotive was built by Andrew Barclay in 1940.
It was intended that the locomotive would be used at Stourport but the new standard gauge facilities were not quite ready when the locomotive was completed. As a result it was delivered to Little Barford Power Station in Bedfordshire in May 1940 before moving to Stourport in the following year.
The Stourport Power Station was owned by Edmundsons Electricity Corporation until the industry was nationalised in 1948 when it came under the authority of the British Electricity Authority.
The locomotive was given the name Sir Thomas Royden after a Director of Edmundsons.
In 1977 the Central Electricity Generating Board (CEGB), who by then operated the plant, offered the locomotive for sale.
In August 1977 the locomotive moved to the Titanic Steamship Company before moving to Market Overton in March 1979.
In April 1980 the locomotive moved to the Rutland Railway (now Rocks by Rail) at Cottesmore where it is still based.
The locomotive ran extensively at the Museum until 1988 when boiler repairs were required.
Following the overhaul of the locomotive it returned to traffic in 2011 after 23 years of restoration work.
As of the summer of 2020 the locomotive was operational.