Peter Davison and Elizabeth Morton

Peter Davison has confirmed he will appear in the 'Doctor Who' 50th anniversary special.

The 62-year-old actor, who played the Fifth Doctor in the BBC sci-fi series from 1981 to 1984, admitted he is going to play a part in the one-off episode on November 23 and while he is looking forward to seeing it all come together, he is remaining tight-lipped about the specific details of his role.

He told BANG Showbiz: "I'm making an appearance somewhere over that period of time but I can't reveal in what.

"I can't reveal anything specific about it. I'm not allowed to.

"It is a big year for the show and we're all doing our bit for it. Trust me."

The episode will be one of Matt Smith's last appearances as the titular Time Lord, but Peter is excited about 55-year-old Peter Capaldi taking over the role from next year because he believes the 'Thick of It' star will bring some much-needed maturity to the part.

He added: "I think it's a great choice, I really think it's a brilliant choice. So many names have been banded about.

"When I heard who it was I just thought that's a great choice.

"He's a fantastic actor and he has that sort of sense of humour. He has an edge to him as well and I think it's nice to have a maturer Doctor.

"I grew up with mature Doctors so I think it's an excellent choice."

Peter would love to see one of his grandchildren appear as the Doctor one day following in the footsteps of him and his son-in-law David Tennant - who is married to Peter's daughter Georgia Moffett - but joked it might resemble the controversial North Korean dynasty, which is passed down from father to son.

He quipped: "'Doctor Who' is a bit like the North Korean dynasty, we're just going to pass it on down the line until one of us pops our clogs. It's all ours now - it's the Davison and Tennant dynasty."

However, Peter - who has been married to Elizabeth Morton since 2003 - admits he fears for the show's future and wouldn't be surprised if people got "tired" of watching the sci-fi series and bosses decided to take it off air.

He said: "There will get to a point where people get a bit tired of 'Doctor Who'. I don't know, maybe it will need a little rest. I'd love to see it carry on but you can never tell."