Emma Thompson, the Oscar-winning actress, was sprayed with manure during an anti-fracking protest.
She set up a “bake off” against fracking in Lancashire on Wednesday.
Before she did it, Thompson explained to a police officer that she will make a solar-powered cake and a wind-powered cake.
“For almost five years, Lancashire has been in the midst of a battle to stop the shale gas industry,” she wrote for Greenpeace. “And despite huge local opposition, fracking firm Cuadrilla is determined to set up its rigs and drill.”

British actress Emma Thompson (C) and John Sauven from Greenpeace join an estimated 40,000 thousand people marching from the Embankment via Whitehall to the Houses of Parliament in London in 2014. AP Photo/Greenpeace International, John Cobb