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 office location. Within Havering, it is identified as one of seven town centres in the borough, with a retail area extending along Station Road, St Mary's Lane and Corbets Tey Road. The unit sizes are mostly small with the largest outlets the Roomes Fashion and Home department store, the Roomes Furniture and Interiors furniture store, and the Aldi, M&S Simply Food and Waitrose supermarkets. The town is served by Upminster station on the London-Tilbury-Southend Line and the London Underground, in London fare zone 6. The western part of the town is also served by Upminster Bridge tube station. Upminster and