the joint tube stock was replaced on bakerloo line services in 1930–31, the lms retaining three sets for use on branch lines until 1946. the siemens stock trains were stored after the withdrawal of passenger services over the west london railway following bomb damage in 1940. in 1952, they were converted to prototype 25 kv ac overhead emus (class am1) and ran on the lancaster-morecambe-heysham line until 1966. the oerlikon stock trains were replaced between 1957 and 1960 by class 501 units, and a motor car, dmbt no. 28249, is currently exhibited at the national railway museum, york. the lms electric units were withdrawn in 1963.