Plaistow shed was a LT&SR shed until 1923 when it was taken over by the LMS
Plaistow is in the West Ham area of London.
Plaistow shed supplied the locos for passenger services out of Fenchurch Street.
Below are the shed codes after the shed was transferred to the eastern regeon of British Railways after nationalisation.
* 33A Plaistow (became sub-shed of 33B in 1959)[1]
* 33B Tilbury
* 33C Shoeburyness
http://www.bbc.co.uk/ww2peopleswar/s...a2059148.shtml
Hope this is of use