Circle line (London Underground) with the other London Underground sub-surface lines: the Hammersmith & City line from Hammersmith to just before Aldgate; the Metropolitan line from Baker Street to Aldgate; and the District line from Tower Hill station to Edgware Road station. The line is electrified with a four-rail DC system: a central conductor rail is energised at and a rail outside the running rail at , giving a potential difference of . The running rails are not electrified. Much of the double track railway from the Hammersmith terminus to Westbourne Park station is on a high brick viaduct. East of Westbourne Park the
Upminster Tithe Barn Museum of Nostalgia in 1450 by the nearby priory (dependent on Waltham Abbey). Although commonly known as the "Tithe Barn", the building was never used for the collection of tithes and a grange barn might be a more accurate designation (Upminster's real tithe barn adjoined the Rectory in what is now Gridiron Place). Upminster station is the nearest National Rail and London Underground station. The Upminster Tithe Barn Museum is served by London Buses route 248. Upminster Tithe Barn Museum of Nostalgia The Upminster Tithe Barn Museum of Nostalgia is a small museum located in Upminster in the London Borough of Havering, London,