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Thousands of people could face disruption at Heathrow airport on Saturday after it has warned passengers not to drive there as flooding hits access to terminals.

Flyers have been told to travel via train, as roads around Terminals 2 and 3 have been closed, and allow extra time for their journeys.

The airport has 'strongly advised' passengers to arrive on Heathrow Express, Elizabeth line and Piccadilly line services instead.

Passengers have also been told not to park at Terminals 2 and 3. Instead they have been advised to park at Terminals 4 or 5 before transferring.

In a statement, Heathrow said: 'Flooding in the central terminal area has resulted in on-going road closures restricting access to Terminals 2 and 3.

'Passengers travelling to or from either of these terminals today must not travel by road.'

'Any passengers that must travel by car must use Park and Ride, head to Terminals 4 or 5 and take free rail services from there, or change at local rail stations. Please allow extra time for your journeys.'

The airport added: 'Our teams are working to resolve the situation as quickly as possible, we apologise for any disruption caused.'

Heathrow passengers have been 'strongly advised' to arrive via train and avoid travelling by road (File image)

The cause of the flood is not yet known, however the airport is investigating the incident and assessing the damage.

It comes after a burst water main caused flooding at the same terminals in May, suspending all trains to and from the airport.

The Daily Mail has approached the airport for comment.

This is a breaking story. More to follow.