Essex Police, Surrey Police and Kent Police all confirmed they responded to the incidents on Friday morning, but all affected roads have now reopened.
Footage from Essex showed officers took a tougher stance and quickly made arrests.
Isulate Britain said 79 “newly released activists” attempted to block London’s orbital highway hours after leaving custody for similar protests on Wednesday.
Essex Police managed to stop 12 of the 20 protesters entering the pavement, the group said.
The force confirmed that 24 people had been arrested, with officers able “to intervene and resolve the situation quickly, meaning the road was only blocked for several minutes”, but the congestion lasted for around 45 minutes. minutes.
Superintendent Sam Smith said: “Incidents of this nature can potentially significantly disrupt road users, who may need to get to work, make an appointment or catch a flight.
“Our officers worked quickly to eliminate the protest attempts this morning and made 24 arrests within minutes.
“The roads are now reopened and traffic is free.
“I would like to thank the drivers concerned for their patience and understanding. “
Meanwhile, blue paint was also poured on the road in an attempt to further disrupt traffic.
The counterclockwise M25 ramp at junction 9 was temporarily blocked, with two lanes of the motorway closed causing long traffic jams.
However, at 10:15 am, Surrey police reported that junction 1 of the M3 and junction 9 of the M25 had been cleared.
The force said 14 people were arrested on the M25.
Kent Police said 10 people were stopped at the meeting point of the B1273 in Swanley and junction 3 of the M25, but added that “the road is now clear and traffic is moving”.
A protester, named only Harry, a solar engineer from Cornwall said: ‘Although I have actively chosen a career in the renewable energy sector, I feel like I need to do more to prepare this country for the effects of come from climate change. I don’t think the government is doing enough. I am participating in this action because I want the government to accelerate the reduction of CO2 emissions.
Transportation Secretary Grant Shapps said in a tweet: “It’s dangerous and counterproductive. We all agree that we must fight climate change, but this type of behavior does nothing, puts drivers at risk and INCREASES pollution.
“I expect the police to take quick action to clear the roads. “
Isolate Britain has caused huge queues of traffic this week, with tens of thousands of drivers delayed after blocking roads on On Monday and Wednesday during rush hour.
It comes hours after they were labeled “selfish” and “dangerous” by the Home Secretary for causing chaos on the UK’s busiest motorway.
On Monday, police arrested 78 people, and 71 others were arrested on Wednesday.
To take stock, we stopped 10 people at exit 1 of the M3, and the road is clear. Junction 9 of the M25 is also clear.
– Police de Surrey (@SurreyPolice) September 17, 2021
Interior Minister Priti Patel said: “Peaceful protests are the cornerstone of our democracy and there will always be space for legitimate groups to make their voices heard.
“But this government will not stand still and allow a small minority of selfish protesters to significantly disrupt the lives and livelihoods of the hard-working majority.
“The guerrilla tactics used by Insulate Britain undermine their cause and I know the public will agree that the scenes on the M25 this week were totally unacceptable.
“The police have our full support. It must uphold the law and take decisive action. This type of disruption is dangerous and pulls police away from communities where they are needed most.
“This is exactly why we are empowering the police to better manage such disruptive protests in the future.
“The Police, Crime, Sentencing and Courts Bill will introduce a new public nuisance offense, ensuring that appropriate penalties are provided for the harm caused. “
On Wednesday, some protesters went so far as to stick to the road to prevent the police from being able to withdraw them.
Earlier this week, Business Secretary Kwasi Kwarteng said, “These actions are not only very disruptive to those who go to work and carry vital goods, but put lives at risk on a busy highway.
“Not to mention the resulting traffic delays will only add to vehicle emissions. “
Edmund King, president of auto insurance group AA, added that a thermal insulation engineer was prevented from coming to work after being stuck in the queue during Wednesday’s blockade.
He said: “While most people understand the need to take action on climate change, these highway blocking tactics only backfire as they alienate the hardworking public stuck in this chaos and pump it out. more shows. ”