Christopher Eccleston took "two minutes" to get back into character as The Doctor.
The 56-year-old actor played the iconic sci-fi character in one series when 'Doctor Who' returned to TV screens in 2005 and has reprised the role for a new audio drama and has been having a great time recording his parts.
Executive producer Nick Briggs told Metro.co.uk: "He’s really joyous about it. He said within two minutes of doing it, he was back in the zone, back there with the character.
"And he was very flattering to me – I’d written the script. He said, 'You’ve really captured the character as I played him and it’s the way he spoke.'
"‘It’s been really lovely, actually. He’s made us laugh a lot. And he’s been singing quite a bit as well. He’s a real music enthusiast."
Nick also voices the Daleks and gave Christopher and Billie Piper a shock when they arrived late for a read-through one day.
He explained: "[Christopher] tells the story of how, when he came rushing into a read-through that he and Billie Piper were late for, they didn’t see me with my microphone.
"And then he got to the scene, the first scene with the Dalek, and I started doing the voice and my voice was coming out of a speaker with the effect on and he said he and Billie jumped out of their skins [like] 'What on earth is going on?!' And the whole room burst into spontaneous applause. "
Christopher quit 'Doctor Who' after just one series, and he previously slammed the BBC's handling of the situation.
He said in 2018: "What happened around 'Doctor Who' almost destroyed my career.
"I gave them a hit show and I left with dignity and then they put me on a blacklist. I was carrying my own insecurities as it was something I had never done before and then I was abandoned."
Christopher actually decided to leave the UK in order to progress his career.
He explained: "I was told by my agent at the time: 'The BBC regime is against you. You’re going to have to get out of the country and wait for regime change.'
"So I went away to America and I kept on working because that’s what my parents instilled in me. My dad always said to me: ‘I don’t care what you do - sweeping the floor or whatever you’re doing - just do the best job you can.’ I know it’s cliched and northern and all that b*******, but it applies."
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