Emergency services are dealing with a multi-vehicle crash on the M25 this morning, near to where climate campaigners have been blocking off the motorway for a second day.

A woman has been airlifted to hospital following the crash, and police, fire services and ambulances are on the scene in Surrey.

Surrey Police said officers were called to a crash involving four cars on the M25, located near the protests on the anti-clockwise carriageway at Junction 9 at around 9am.

"Police, fire service and ambulance are on the scene and a 50-year-old woman has been airlifted to hospital with serious injuries.

"One of the lanes of the carriageway has since been re-opened and we are working with Highways England to open the rest of the road.

Surrey Comet: Traffic builds up on M25Traffic builds up on M25

"The investigation into the circumstances of the collision remains ongoing," the force added.

Nearby protests rage on, with activists blocking parts of the M25 in Kent and Surrey for the second time in three days.

Insulate Britain, who are demanding Government action on home insulation, stopped traffic at two sections of Britain’s busiest motorway, with demonstrators sat in roads causing huge queues of traffic.

Surrey Comet: Insulate Britain - PAInsulate Britain - PA

Insulate Britain said 89 of its members took part in the action on Wednesday.

It said in a statement: “We demand credible action now.

“Proper jobs for hundreds of thousands of people to start the first real step – to insulate all the homes of this country – which pound for pound gives us the biggest reduction in carbon emissions.

“It is a total no-brainer and yet this Government refuses to get on with the job. This is criminal negligence.”