Sections of the M25 have been closed as part of the latest protest by Just Stop Oil.
A climate change protester has climbed an overhead gantry forcing it to be closed between junctions 6 and 7 in Surrey, police said.
Elsewhere, there have been reports the climate change activists are staging protests between junctions 8-9, 13-12 southbound and 13-14.
Junction 25 of the motorway has also been closed anticlockwise.
Specially trained police officers are on their way manage the scene.