Burst pipe closes Elizabeth line between London and Heathrow

People at Hatton Cross Underground station wait for a train for central London as trains to Heathrow Airport are terminated, in London, Britain, 21 March 2025. Heathrow Airport announced on 21 March that it would be closed all day following a power outage 'due to a fire at an electrical substation supplying the airport'. Heathrow Airport closes all day over power outage following nearby fire, Hillingdon, United Kingdom - 21 Mar 2025
Travel from Heathrow has been thrown into disarray today after the UK’s busiest airport was left with no rail or Tube connection (Picture: TOLGA AKMEN/EPA-EFE/Shutterstock)

Passengers face major travel disruption between central London and Heathrow Airport after a burst water main flooded the signalling system.

The UK’s busiest airport is currently without any rail or Tube service after the burst pipe incident and planned engineering works.

There are no Elizabeth line or Heathrow Express services running between Paddington and Heathrow terminals after flooding led to a signalling meltdown.

Meanwhile, the Piccadilly line is suspended between Heathrow and Acton Town for planned works taking place this weekend.

Passengers have been told to use buses instead.

One person said on X: ‘Got through Heathrow quickly, great straight onto the Elizabeth line…. Nope, line is flooded. It’s two buses and a train instead.’

The flooding happened between Paddington and Heathrow after a burst water main, blocking all lines and submerging the signalling system, National Rail said.

Major disruption is expected at least until 11am.

Another frustrated traveller said: ‘No Piccadilly line to terminal 5. No Elizabeth line to terminal 5 due to flooding??? Waiting for a bus that doesn’t seem to arrive. People will miss their flights! Sort this out!’

Heathrow Airport said: ‘There are currently no rail services operating to and from Heathrow. The Elizabeth line and Heathrow Express are currently suspended, and the Piccadilly line is closed between Heathrow and Acton Town as part of planned works.

‘If you are travelling to the airport, please allow extra time and consider bus or coach options. We apologise for any inconvenience caused.’

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