Heavy delays are building up on the M25 after several crashes in Kent and Essex.

Kent Police, paramedics and firefighters are currently on the scene at a crash involving a coach anti-clockwise at junction 3.

While emergency services deal with the incident, the junction 3 slip road has been closed, as well as two lanes on the carriageway.

The #M25 J3 anti-clockwise exit slip road is closed and lanes 1 and 2 are closed on the main M25 carriageway within J3 due to an overturned coach. Long delays in the area and are expected to increase through the evening peak. Please use an alternative route + allow extra time. pic.twitter.com/7oJknsfdMe

Just a few hours before, traffic had piled up towards junction 3 after a crash believed to be between a lorry and a car between junctions 31 and 30. 

At this time, it is not known when the traffic will clear but delays are expected to worsen throughout the evening.

Drivers are advised to allow extra time for journeys and look into other routes.