Christopher Eccleston has joked he'll only return to 'Doctor Who' "when hell freezes over".

Christopher Eccleston

Christopher Eccleston

The 56-year-old actor played the iconic sci-fi character when 'Doctor Who' returned to TV screens in 2005, but he can't imagine himself ever making a comeback on the BBC series.

Christopher - who is currently recording a 'Doctor Who' audio series - told ITV's 'Lorraine': "That's what I'm doing at the moment in audio form ... I know what you're getting at, Lorraine, but only when hell freezes over..."

The TV star spoke to Lorraine Kelly before his latest recording session for the audio series, and Christopher is relishing the experience.

He shared: "I'm on my way to do the second day of recording of the audio adventures of the ninth Doctor for a company called Big Finish. It's written by an excellent writer called Nicholas Briggs, who is also the voice of the Daleks."

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."