Hundreds of people have descended on Parliament to protest against climate change and the cost-of-living crisis.
The coalition of groups, including Just Stop Oil and Insulate Britain, plan to stage a 15-minute sit-in on Parliament Square.
One organiser described it as a way of getting people to “dip their toe” in civil disobedience.
Among the marchers was a makeshift white elephant named Nelly, held aloft by two people, who had “Stop HS2” printed on her head.
