Mr Mitchell said a book deal was also being considered "at some point down the line". He confirmed reports that one of the directors of the fund, former GMTV presenter Esther McVey, had resigned from the board, but denied it was because of any rift with the McCanns.
He said she wanted to concentrate on her role as a Conservative parliamentary candidate and was also about to start studying for a demanding MBA qualification
Madeleine the movie: One step too farLast updated at 19:27 10 January 2008
Ever since their daughter Madeleine disappeared, Kate and Gerry McCann have ridden a wave of public sympathy.
True, there are some (including the Portuguese police) who have aired deeply hurtful suspicions about the couple since that terrible evening in May.
But the overwhelming public mood - particularly among parents of young children - has been one of compassion.
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Madeleine the movie pushes the boundaries of tasteToday, however, the McCanns risk losing much of that goodwill.
Incredibly, it emerges that they are discussing a possible multi-million pound deal to turn Madeleine's disappearance into a film.
To be blunt, isn't this pushing the boundaries of taste too far?
(Madeleine had only been dead a short eight months)