The Queen star has been a vocal opponent of the U.K.'s badger cull, which is designed to keep the population down and prevent the animals spreading tuberculosis to cattle, and he is now planning a fresh demonstration to urge politicians to change the policy.

May will march through the streets of the British capital on Tuesday (08Sep15) and give a speech to protesters, who have been instructed to dress in black for the occasion.

The demonstration has been organised by the League Against Cruel Sports.