Police have made 35 arrests this morning following reports of people blocking the road in two locations in Thurrock.
Officers were initially called to the slip road of Junction 31 of the M25 shortly after 8.25am and officers were on scene within five minutes.
16 people were arrested.
They were then called to reports of people blocking Stonehouse Lane, Purfleet.
Officers arrested a further 19 people and the road has now fully re-opened.