Stephen Hawking Auditions Celebrities To Be His New Voice

"Listen to my voice. It's deep. It's sexy. It's got a tinge of physics," pitches Liam Neeson

After 30 years of his trademark voice, Professor Stephen Hawking is ready to try something different. And it's all in the name of charity.

In a sketch for Comic Relief, the 75-year-old physicist auditions a celebrity line-up to takeover his computerised speech. "Time to find my new voice," Hawking says in the clip, before he watches audition tapes from the likes of Liam Neeson, Simon Cowell, Rebel Wilson, Eddie Redmayne, Kylie Minogue, Gordon Ramsay and Miss Piggy.

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Taken star Neeson is first up. "Stephen, it's me, surely it has to be me," he pitches to Hawking. Listen to my voice. It's deep, it's sexy, it's got a tinge of … physics."

Anna Kendrick reckons she's the "obvious choice" while Stephen Fry tells Hawking his dulcet tones would "endow your presence with an enormous authority."

Kylie Minogue tries to get the job by claiming her songs are about science and Felicity Jones attempts to persuade the professor by reminding him she was in Star Wars, and "it doesn't get more physicsy than that."

In the end, Hawking sides with the iconic sound of a legendary British actor. Find out who in the video above.

This year's Comic Relief is on Friday 24 March from 7pm on BBC1.