Introduced by Aspinall in 1891, these locomotives were a smaller version of his Atlantic. They mostly survived until the late 1920s when they were scrapped as part of the LMS standardisation policy. The Aspinall 4-4-0 was an imposing locomotive and was used for the acclaimed L&YR Trans Pennine express services of the Edwardian era. A fleet of 40 was built between 1891 and 1894. Over their life span various changes were made with different smokebox doors, buffers and tenders. Several members of the fleet were rebuilt with a Belpaire firebox, Schmidt superheater and extended smokeboxes. At least one was rebuilt as a four-cylinder compound. A table summarising dates in service and changes made is supplied. It is suggested that modellers undertake background reading to select which locomotive they wish to build.