STEPHEN FRY

The British funnyman, actor and author had promised to write an episode featuring the time traveller and his battles against a villainous knight in the age of mythical hero KING ARTHUR.

But the 50-year-old maintains time constraints forbid him from taking on the venture.

He says, "Unfortunately I've had to pull out of the Doctor Who gig. Lack of time. I couldn't find three minutes to string together.

"There's barely enough time to go to the lavatory these days, let alone take on new projects."