Activists with the environmental group Greenpeace disrupted a speech by a top BP executive on Tuesday at a major oil conference in London. BP chief of staff Steve Westwell was addressing a crowd of oil executives and energy ministers at the World National Oil Companies Congress when the activists took the stage.

Protester: “You guys here should not be allowed to be talking about more oil. We need to end the oil age! We need to protect the global climate!”

BP’s embattled CEO Tony Hayward had been scheduled to deliver the speech but canceled his appearance.