Protesters are blocking a busy junction causing delays for commuters.
The campaigners are sitting in the road at large junction for the M25 near Lakeside Shopping Centre.
Police say 12 people have been arrested after the incident and force bosses have thanked drivers for their patience and the road is re-opened.
Images show traffic is being held and campaigners have banners with "insulate Britain" written on them.
We're not here to #BlockBorisJohnson
— Insulate Britain (@InsulateLove) September 13, 2021
But we're blocking the M25 to get a message to him & @GOVUK...
We'll go home when you #getonwiththejob.
Only you can create hundreds of thousands of jobs, save lives & lead the world through this crisis.
Time to #InsulateBritain now pic.twitter.com/dTzf0WJofH
Lots of drivers posting about the incident and delays.
A website for the protest group says it's working to lower emossions and working for change.
It states: "Join the Insulate Britain Campaign to force the government to make significant legislative change to start lowering emissions."
There are reports of "violent clashes" between climate protesters and drivers near junction 20 of the M25. Police have been contacted for confirmation.
A spokesman for Essex Police said: "Eleven people have been arrested after the M25 was blocked. We received a call shortly before 8.15am today reporting a number of people were blocking the road.
"Officers attended and worked to resolve the situation quickly and safely and this included shutting the road.
"Eleven people were subsequently arrested on suspicion of highways obstruction and they are currently in custody."
Chief Inspector Paul Austin said: “This incident caused significant disruption and our officers worked to resolve it as quickly and safely as possible. I want to thank the drivers affected for their patience and understanding.”
Exclusive: drivers turn violent at Insulate Britain climate campaigners who blockaded the roundabout at junction 20 of the M25 this morning, causing massive delays. @LBC pic.twitter.com/TwAX9qfK8q
— Rachael Venables (@rachaelvenables) September 13, 202
Climate protestors blocking a roundabout in King's Langley near M25. Once more causing serious disruption to the public with no impact on government. Selfish actions once again to make their point . Hope for some swift & prompt arrests. 👍
— Graham Wettone (@grahamwettone) September 13, 2021
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules hereComments are closed on this article