Circle route
For a time, the West London line formed part of the GWR's Middle Circle route (1872-1905) which ran (clockwise) from to (originally Moorgate) via , Kensington Olympia, and . The West London line was also part of London Underground for a time and operated as a branch of the Metropolitan Railway between and Addison Road. The branch was eventually closed and the link between the West London line and today's Hammersmith &amp; City line was dismantled in 1930.