"Activists are blocking the entrances to BP’s London HQ. They have set up camp inside specially designed containers. BP can’t continue as if it’s business as usual in this Climate Emergency we’re in," a message on the group's Twitter account read.
Greenpeace said a climate emergency inflamed by PB "threatens millions of lives," calling on the energy giant to "clean up or clear out."
The group also posted images of protesters wearing red Greenpeace shirts sitting atop containers blocking the building’s entrances.