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 Hall Upminster Hall Upminster Hall is a historic house in Upminster, London, England. It is now the clubhouse of the Upminster Golf Club. King Harold II gave the manor of Upminster Hall to the abbotts of Waltham Abbey in around the year 1050. The present house, which dates from circa 1500, remained in the ownership of the abbey until the Dissolution of the Monasteries in 1536, when King Henry VIII gave it to Thomas Cromwell. It was then occupied by the Latham family from 1543 until it passed to Edward Noel, later 1st Earl of Gainsborough, in 1677. It was then