Doctor Who star David Tennant has denied rumours that he is planning to leave the show next year.

The star dismissed claims about his departure as “a load of old nonsense.”

Questions arose about Tennant’s future in the BBC1 series after new assistant Catherine Tate told the Jonathan Ross show she thought the next series would be Tennant’s last.

He said: “Catherine Tate stitched me up good and proper. She goes on Jonathan Ross and makes up a load of old nonsense.

“Unbeknownst to me, she thinks I’ve made a decision – she’d clearly had too much coffee that morning.

“She said I was leaving, which was a decision I haven’t made yet, maybe she’s made it for me, but I’m going to keep people guessing for as long as possible.

“I’m doing four more specials and beyond that no one’s asked me to make any decisions and I’m quite happy to be enigmatic for as long as possible.”

Speaking at the premiere of the Doctor Who Christmas special, Voyage Of The Damned, Tennant was still enthusiastic about starring in the hit BBC show.

“I think it’s the most exciting thing you could possibly hope to see, I’m just glad that people seem to agree,” he said.