Actress Catherine Tate has hinted that her 'Doctor Who' co-star David Tennant may be set to quit the show.
The actress made the comments during an interview on Jonathan Ross' radio programme.
Tate, who stars as the doctor's assistant in series four of the show, said: "I think it's maybe David's last series."
She also confirmed that the forthcoming series of 'Doctor Who' would be her last.
The BBC refused to comment on the suggestion that Tennant is set to quit the show.
