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 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