Post Office Underground Railway (Rail Mail), Paddington District Office, London

NOTES: The Post Office (London) Railway Bill was passed by a Select Committee of the House of Lords in 1913 which reccommended the construction of an electric railway with driverless trains to connect the West and East ends of London. Construction of the tunnels began in 1914 and was completed in 1917. The operating equipment was not installed until after World War I and the railway finally opened on 5 December 1927 with parcels traffic running between Paddington and Mount Pleasant. The line was extended to Liverpool Street on 2 January 1928.