The Duchess of Cornwall has spoken of her concern over the effect on young people of music videos glorifying sex and violence.

Speaking to victims of rape and sexual abuse at a rape crisis centre in London, Camilla was quoted by the Daily Mail as saying: “A lot of those videos are terrifying. I am sure they trigger a response in some of the young people. I can never understand how they get away with making those things.”

The topic of Beyonce’s controversial video for her song Video Phone arose during the conversation. In the video, which also features the unconventional Lady GaGa, Beyonce dances semi-naked while brandishing toy guns at bare-chested men wearing hoods over their faces.

“It has happened too quickly, values have changed so much,” Camilla said. “I suppose it’s peer pressure, that’s the problem. You don’t want to look the odd one out.

“But it takes a strong person to show that they don't approve, especially at that age. It's a breakdown of discipline. There doesn't seem to be any punishment for such behaviour. The teachers are too kind.”

The Rape and Sexual Abuse Support Centre opened in Croydon, South London, in 1985 and is still the only one of its kind in the capital.

It offers counselling and advocacy for to around 4,000 women a year who have been raped or suffered some form of sexual violence.