British royal Prince Charles has ruled out a return to the U.K's TV screens - after turning down a role in sci-fi series Doctor Who. Charles made a special guest appearance in an episode of Manchester-based soap Coronation Street to commemorate the show's 40th birthday in 2000, but has passed on the offer to make a cameo in the BBC show's Christmas special - despite pleas from programme bosses. Phil Collinson, Doctor Who's producer, says, "We recently approached Charles because we had some great ideas for him in the show. "Unfortunately he politely declined but he did say he was a big fan of the show." Australian pop star Kylie Minogue confirmed an appearance in Doctor Who earlier this month (Jul07).