The huge buzz around Ledger's performance as the Joker last year stemmed from his update of the iconic character played by camp comedian Cesar Romero and as a hateful clown by Jack Nicholson.

CNN: Ledger fans demand the Joker retired from film

Patrick Nicholson, from the Combe Haven Defenders, said activists were planning to remain at the third camp for some time.

BBC: Tree protester