Massey Ferguson was originally the Standard shadow factory. Indeed, in the 1957 fare table, it was still listed as the Standard Number 2 Factory. However, in 1946, the factory had become the Ferguson Tractor plant, using a Standard 20hp engine. In 1953 Ferguson merged with Massey Harris to form Massey Harris Ferguson, later truncated to Massey Ferguson. I remember driving a T20 using DERV, but you needed to put petrol into the carburetor to start it and pack the radiator with cardboard to keep the engine temperature up to boiling.
Next to Massey Ferguson was A.C. Wickmans. There was a service road in front of the factories, running parallel to Banner Lane, where the buses discharged their passengers in the morning and, in the afternoon, waited for the workers to re-emerge.