Dealt with today quite promptly.
//Insulate Britain protesters caused delays on the M25 by walking alongside oncoming traffic, police said.
The protest group said the decision to stop sitting in the middle of roads had been made following "feedback" from frustrated drivers.
Essex Police said it was called to a stretch of the motorway between junctions 28 and 29 near Great Warley at 08:00 BST and 10 arrests were made.
It said both sides of the carriageway were reopened within half an hour.
Protesters later began walking along the white lines of the motorway near junction 21a for Bricket Wood at about 10:30 BST.
Hertfordshire Police said on Twitter that officers were "working to resolve the disruption as quickly as possible" and "several arrests" had been made.//
(4th time of trying)
https://news.sky.com/story/m25-environment-activists-insulate-britain-walk-between-lanes-of-oncoming-traffic-to-block-motorway-12453891