Essex Moulsham Mill Chelmsford British RailwaysOriginal vintage British Railways travel poster Essex See Britain by Train featuring scenic artwork by the landscape watercolour painter Edward Wesson (1910 1983) of Moulsham Mill Chelmsford depicting the old watermill on the River Chelmer with trees and a boat on the reflective water, the title below with the British Railways logo. Dating back to 1819 Moulsham Mill is now a business centre, located in the historic Roman fort town of Moulsham.