Originally numbered 1532–1551, 1632–1656, and 1718–1737; under the 1907 renumbering scheme they became 1266–1330, and were given the power classification 1P.
All were in service at the 1907 renumbering, and all bar three passed to the London, Midland and Scottish Railway at the 1923 Grouping, the exceptions were two that had been withdrawn and a third No.
Withdrawals started in 1919, and fourteen locomotives were still in LMS stock at the end of 1947, to be inherited by British Railways.
Bachmann Branchline announced on 8 January 2017 that it would be producing models of the class in Midland Railway Maroon, LMS Black and BR Black.
An SDJR Prussian Blue Livery was also made for the Collector Club[2]