David Tennant quits 'Doctor Who'

David Tennant has announced his decision to quit Doctor Who at the end of 2009.

The actor confirmed the news while collecting the award for 'Outstanding Drama Performance' at the National Television Awards.

"In January I go back to make four new specials which take Doctor Who through to the end of 2009," he said. "But when Doctor Who returns in 2010, it won't be with me. The 2009 shows will be my last playing the Doctor."

Tennant added: "If I don't take a deep breath now and move on, I never will. I think it's best I don't outstay my welcome."

His exit in the 2009 Christmas Special will coincide with the departure of executive producer Russell T Davies, who masterminded the cult show's revival in 2005.

Speaking after the announcement, Davies said he was "delighted" for Tennant. "We've known for a long while now.... Most of all, as a Doctor Who fan myself, [I'm] just excited about the future now."

Asked who would be replacing Tennant in the iconic role, new exec producer Steven Moffat teased: "You'll be hearing from us."

Tennant took over from Christopher Eccleston in the coveted role at the end of the first series. By the end of his tenure he will have starred in three series and eight specials.