Former Prime Minister Tony Blair and his wife Cherie may appear on the Christmas edition of Who Wants To Be A Millionaire, according to reports.

The Mirror says that the couple have been approached to appear on Chris Tarrant’s hit show, whose Christmas special features celebrity duos winning money for charity.

The couple have not yet reached a decision on whether they will take part – however, show insiders are optimistic that the Blairs will say yes.

“Some of our biggest celebs have appeared,” a source told the paper. “Who knows, you are talking about two intelligent people. They could go all the way.”

So far, only one celebrity couple who have appeared on the show – Lawrence Llewellyn Bowen and his wife Jacqueline – have reached the £1m question. The pair appeared in this year’s Valentine’s Day celebrity special.