London Underground at +420 V, giving a potential difference of 630 V. On the sections of line shared with mainline trains, such as the District line from East Putney to Wimbledon and Gunnersbury to Richmond, and the Bakerloo line north of Queen's Park, the centre rail is bonded to the running rails. The average speed on the Underground is 20.5 mph. Outside the tunnels of central London, many lines' trains tend to travel at over 40 mph in the suburban and countryside areas. The Metropolitan line can reach speeds of 62 mph. The London Underground was used by 1.379 billion passengers in
Upminster Hall owned by the Branfil family from 1685 until it was bought by Major Godfrey Pike in 1921. It became the clubhouse of Upminster Golf Club in 1927 It has been listed Grade II* on the National Heritage List for England since January 1955. 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