RDF chief creative officer Stephen Lambert has resigned over the firm's scandal-hit documentary for BBC One, A Year with the Queen.

This follows the exit of BBC One controller Peter Fincham, who announced his departure earlier today.

Lambert's move was prompted by the publication of the BBC's Wyatt report, which investigated why misleading footage of the Queen was shown to the press at a BBC One Autumn launch in July.

David Frank, RDF's chief executive, said: "I am deeply saddened at Stephen's departure - he is a truly brilliant creative force."

Frank added that despite the controversy the company was "in good health" and that he would be co-operating fully with the BBC with a view to "achieving a resumption of commissioning relations between the Group and the BBC as soon as possible". The BBC ceased all commissions with the company in July.

RDF also said that it acknowledges the criticisms of the company in the Wyatt report, and that there was never any intention on the part of anyone at RDF to defame or misrepresent the Queen in the tape that was prepared for the BBC One launch.