Richard Edward Lloyd Maunsell held the post of chief mechanical engineer (CME) of the South Eastern and Chatham Railway from 1913 until the 1923 Grouping and then the post of CME of the Southern Railway in England until 1937. He had previously worked his way up through positions in other railways in Ireland, England and India.

The South Eastern and Chatham Railway Companies Joint Management Committee (SE&CRCJMC), known as the South Eastern and Chatham Railway (SE&CR), was a working union of two neighbouring rival railways, the South Eastern Railway (SER) and London, Chatham and Dover Railway (LC&DR), which operated between London and south-east England. Between 1899 and 1923, the SE&CR had a monopoly of railway services in Kent and to the main Channel ports for ferries to France and Belgium.