A3 and M25 closure: Northbound Wisley junction flooded and drivers warned to look for alternative route

The sliproad which leads to the northbound A3 from Junction 10 of the M25 - the Wisley roundabout - is shut as it is underwater.

The junction is one of the main routes towards London from the south of England and sees thousands of cars an hour pass through it.

National Highways says it is working to clear the water but this is “expected to take some time” and that drivers should “consider alternative routes into London this morning”.

The junction is currently in the middle of a long-term upgrade which has seen bridges replaced and new gantries but in during the year. These have seen several all-weekend closures enacted.

An amber weather warning for heavy rain has come into force in parts of England, with the Met Office warning that affected areas could experience more than a month’s worth of rain falling on Monday. Thunder, lightning and hail marked the official end to summer over the weekend, with the autumn equinox on Sunday afternoon signalling the start of the new season.

Rain warnings have been in place all weekend with a fresh yellow alert having come into effect at midnight to last all of Monday, covering parts of Wales, much of the south of England, the Midlands and into north-west England and Yorkshire.