The M25 clockwise junction 10 sliproad is still closed due to flooding. This is the same junction which was forced to close after torrential rain on Monday.

Elsewhere, junction 4-5 clockwise is seeing slow moving traffic and drivers are warned to expect delays.

There’s been an accident on the clockwise carriageway between junction 16 for the M40 and 17 for Rickmansworth.

And on the anticlockwise carriageway, there are delays between junction 28 for Brentwood/Romford and 27 for the M11 after an accident.

The situation has improved slightly on the District line, with the severe delays from earlier now resolved.

However there are now minor delays between Edgware Road and Wimbledon due to a signal failure at East Putney.

The minor delays on the Hammersmith & City line are still impacting commuters.

There was a major cyber-security incident affecting Network Rail yesterday evening, with passengers trying to connect to their public WiFi network being met with a terrorism message instead.

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There are a few incidents ongoing on different parts of the rail network this morning, including:

• Signal fault causing disruption on Southeastern services from Gillingham and Dartford to London Cannon Street. Trains running towards Slade Green may have to run via Bexleyheath instead.
• Overrunning engineering works have blocked the line between Exeter Central and Barnstaple. Great Western Railway trains are unable to run between those two stations.
• A problem between Alexandra Palace and Stevenage was causing delays on Thameslink and Great Northern Services in and out of London. Lines have now reopened but disruption is expected until around 7.30am.
• A problem in the depot between Luton and Sutton Surrey is causing disruption to journeys between those two stations. This is affecting several Thameslink services and disruption is expected until 8am.