These modern engines were built during the 1940s to replace the large number of Victorian era engines being used on the branchlines of the LMS network. These new, comfortable and efficient engines were popular with the crews and helped reduce costs, having the much in common with the 2MT 2-6-0 tender engines. Both types were adopted with minor changes as BR standard types and were found all over the rail network. This model of 41243 is painted in the early British Railways black livery with lion over wheel emblem. Era 4.