A Withnail and I sequel on the cards? It was the lead role in the 1987 classic that put Grant, then a jobbing thespian, on the map. There are no plans to revive the alcoholic Withnail character, but Grant will star later this year in a Doctor Who Christmas special. It is believed he'll play the villain. It's not the first time he's been involved in the show. He played the Doctor in 2003 online animated series Scream of the Shalka, and starred as the unofficial "Tenth Doctor" in a 1966 Comic Relief sketch.

Isn't Doctor Who a bit of a step down? The 55-year-old said he was "honoured" to star in the special. He's certainly no snob.He recently told the Telegraph: "I watch TV all the time. Everything. Celebrity Jungle? Gillian McKeith? I wanted to kick the TV in. Which is a good thing."

Any details about the episode? It's being closely guarded and spoilers are thin on the ground. The episode is being written by fan favourite Steven Moffat, and Grant will be joined by Tom Ward, who played Harry Cunningham in Silent Witness, as well as the Doctor's new companion, Jenna-Louise Coleman. Grant fans can also look forward to his appearance in Kath & Kimderella, a movie spinoff of the cult Australian comedy Kath & Kim.