Louis Theroux, the BBC interviewer whose subversive style has disarmed so many of his subjects, has been visibly rattled by one of his "victim", the PR supremo Max Clifford. Millions of viewers will see the normally unflappable journalist who jealously guards his private life on the back foot during his latest documentary, to be broadcast on Tuesday night. The alarm on his face is first seen when he realises Clifford was planting stories about him in the newspapers while the BBC2 documentary was being made. Clifford made stricter demands for privacy from the programme makers that any previous subject - to protect the deals he brokers daily for a list of celebrity clients including Pop Idol judge Simon Cowell.
