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The duo will take part in a global one-off edition of the quiz later this year. It aims to raise millions worldwide for the tsunami victims.

"In three months from now studios across the globe will be occupied by some very nervous, hugely famous people," said quiz host Chris Tarrant.

Veteran campaigner Sir Bob Geldof will join Sir Elton John and Robbie Williams in a special edition of Who Wants To Be A Millionaire?

The world's most successful entertainment show is going global to aid the tsunami victims.

Launching the event Chris Tarrant said: "Bob will be extremely good. He's a very bright man. We might have to edit his part of the show though."

(ITV Teletext)