Greater London Proposed Metro Lines — Planned Subway Routes and Future Underground Expansions

Greater London planned and proposed metro lines. Future underground routes and rapid transit expansion projects before construction begins.

Greater London metro and subway lines formally proposed or in active planning: future underground corridors announced, studied or included in urban transport master plans but not yet under construction. Shows where cities plan to extend rapid transit coverage — new orbital lines connecting suburbs without routing through the city centre, extensions to areas beyond the existing network and entirely new metro systems in cities currently without subway.

Greater London has 13 proposed railway segments including 5 railway, 3 metro and 5 light rail.

  • Greater London — Metro Map
  • Greater London — Metro Under Construction
  • Greater London — Proposed Metro Lines
  • Greater London — Metro Stations Map
  • Greater London — Metro Speed Map
Proposed
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Last update: 2026-05-27

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🇬🇧Greater London
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🚇Metro
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🇬🇧Greater London – Metro Proposed Map

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