David Tennant found it "scary" being at the centre of such a hugely passionate fan base when he starred in 'Doctor Who'.
David Tennant
The 47-year-old actor played the Tenth Time Lord in the long-running science fiction show from 2005 and 2010, and he admitted the dedication of the viewers can be intimidating.
Speaking on 'The Graham Norton Show', which airs tonight (18.05.18), he said: "It's quite a small club. It does feel like once you've been The Doctor, you're always The Doctor.
"We do form a small support network... It's quite an unusual job and it's humbling to be at the centre of that. It has such a huge fan base all over the world that it is quite scary at first."
David also opened up about being awarded an Emmy for one hour's voice work he completed for animated TV series 'Star Wars: The Clone Wars', and admitted he wished he'd worked harder for the recognition,
He explained: "I loved doing it but about a year later I got the award in the post.
"I felt like I should have strived more and it didn't really feel like I had earned it. It went against my Scottish Presbyterian work ethic just to get one in the post when you didn't even know you were up for it!"
Meanwhile, David has also admitted there's a chance he could make a return to 'Doctor Who' in the future.
The British star - who made an appearance in the 50th anniversary special in 2013 - previously said: "They are exciting those episodes, but I think you have to be careful not to do them too often. They have to be a novelty. The 50th was a great thing to be a part of.
"When's the 60th? Will we still be upright? Maybe then."
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