New series 1/3. In the last 20 years, animal-rights campaigners have managed to decimate the fur trade, close down vivisection laboratories and nearly succeeded in banning hunting. Simon Cox gets inside one of Britain's best-organised pressure groups, to investigate their techniques, tactics and strategy. He looks at how they recruit the young, influence mainstream animal-welfare groups and operate across borders. And he asks the key questions: what do they really want and can they be Stopped? Producer Richard Vadon