Locomotives of The Midland Railway - Numbering and Classification

Numbering and Classification

Before 1907 numbering was somewhat erratic. New locomotives might take the numbers of old engines, which were placed on the duplicate list and had an A suffix added to their numbers. In 1907 the whole stock were renumbered in a systematic way, each class in a consecutive sequence, classes being ordered by type (passenger/tank/goods), power and age. After the grouping this system was adapted for the whole LMS

The Midland classified their stock into three classes numbered 1 to 3 with 1 the least powerful and three the most. Stock were also split into passenger and freight engines. Just before grouping class 4 was introduced. This system formed the basis for the subsequent LMS and BR classification systems.