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
Hornchurch and Upminster (UK Parliament constituency) Hornchurch and Upminster (UK Parliament constituency) Hornchurch and Upminster is a constituency represented in the House of Commons of the UK Parliament since 2017 by Julia Lopez of the Conservative Party. The easternmost seat in Greater London, this seat was created by merging two of the three old constituencies comprising the London borough of Havering, specifically Hornchurch and Upminster. These two seats were lost by the Conservatives in Labour's landslide 1997 victory, but Upminster was one of the few Conservative gains in 2001 and Hornchurch was lost by Labour in 2005; this area is now very safe territory for the