Under the Southern Railway, the works were responsible for building the Maunsell SR Lord Nelson Class 4-6-0, the Schools 4-4-0, U1 2-6-0, W class 2-6-4 tanks, and Q class 0-6-0 locomotives. Under the regime of Oliver Bulleid, after 1937, Eastleigh works constructed all thirty of the SR Merchant Navy Class and six of the West Country 4-6-2. During the Second World War, Eastleigh works built 23 examples of the London Midland and Scottish Railway designed 8F 2-8-0s. By the end of 1947, the works had built 304 locomotives with a further 16 before steam locomotive building ceased in 1950.