Mr Westwood, 41, has beenone of the station's headline names at the festival for the past decade, but executives have excluded him this year to avoid any repeat of the incident in south London two weeks ago when he was shot by a man on a motorcycle. A spokesman said: "We have taken the widest advice on Tim's security and decided not to take any chances."
The Radio 1 controller, Andy Parfitt, said: "Tim is a big draw. It is really sad to have to leave him out of our line-up. I know Tim would have loved to have played, but sadly, we had to say `no'. We've consulted widely and although any risk is thought to be small, the price of being wrong is unthinkable."
Scotland Yard is treating the shooting as attempted murder. Mr Westwood is due to return to his 11pm Friday slot on Radio 1 this week.