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Marcus Nispel. Director. Black Dog Films – ‘One by One’ Cher Music Video

"It was a pleasure working with Callum. He's a talent. I’m sure we will hear more from him.

I wish him luck"

Steph McCarthy, Creative Director, DDB NY

Callum is the utmost professional. A true talent at VO, he elevated our script and delivered each word with warmth, charm and believability. We’re lucky to have a pro like Callum to rely on for our commercial voiceover needs.

Erick Van Wyk. Director. Independ ‘Boddingtons’ TV commercial with Alison King.

A pleasure working with you man. Goodluck with everything.

Frode Klavenes. Director. Splaesh

I have been working with Callum Walker both on set and in studio for dubbing and voiceover recordings.

It’s a pleasure working with this guy. Callum is always professional in his work and brings good vibes and laughter on set.

Looking forward to upcoming projects together.

Jeremy Kingston - The Times ‘Coyote Ugly’

"Good acting too from Callum Walker”    


Here, I was asked to voice this Global Forgotten Crisis Campaign for MSF. 

Here I voice Bo Bear for a Childrens TV series. 


I was asked by Amnesty International to help promote this campaign for Maria Teresa Rivera.

We won and she was freed! So proud to be involved.

"A court's decision today to release a woman who spent four years in jail in El Salvador for miscarrying her pregnancy is a great victory for human rights, said Amnesty International.

María Teresa Rivera, 33, was jailed in 2011 and sentenced to 40 years in prison for “aggravated homicide” after having a miscarriage.

"The release of María Teresa is yet another step towards justice in a country where women are treated as mere second class citizens," said Erika Guevara-Rosas, Americas Director at Amnesty International."

Amnesty International