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More Just Stop Oil protests have taken place on the M25 on Tuesday morning.

Essex Police says its officers spotted a man scaling a gantry at Junction 31 - as of 8am, the road is closed whilst the situation is being dealt with.

But what motivates the protestors? Why would someone risk their own safety to cause disruption to other people, to climb a bridge or glue themselves to a road?

´óÏó´«Ã½ Essex's Sonia Watson speaks to Rachel - she wasn't involved in yesterday's action but has taken part in three protests in London

Rachel told Sonia she started taking action after seeing the protests at Oil Refineries in Thurrock when campaigners tunnelled under roads.