Will Young in Tower gig line up

Will Young won the first Pop Idol

Will Young is to join a line up including Ozzy Osbourne, Annie Lennox, Lionel Richie and Ronan Keating at a concert for the Prince's Trust.

The event on 20 May at the Tower of London will be hosted by the Prince of Wales, Prince William, Prince Harry and the Duchess of Cornwall.

Young, 27, a trust ambassador, said: "I'm delighted to be able to help make a difference to change young lives."

Also confirmed for the 30th birthday gig are Pink, Sugababes and Embrace.

Yorkshire indie group Embrace will perform the first live rendition of England's official World Cup anthem, World At Your Feet.

3D broadcast

The show will be screened live on ITV1 and presented by Cat Deeley, Ben Elton, Vernon Kay, Patrick Kielty and Kate Thornton.

Some parts of the broadcast will include special 3D projection, which viewers will be able to watch through special glasses.

The trust was founded in 1976 by the Prince of Wales and has helped more than 500,000 disadvantaged young people.

The prince will be interviewed alongside sons William and Harry during ITV1's programme by presenters Ant and Dec.