The Voice has already been a massive hit in several countries, including the US, where it has dethroned the once-almighty American Idol as the highest rating talent show despite only being in its second season.
And the Black Eyed Peas frontman - who is joined by Jessie J, Tom Jones and The Script frontman Danny O'Donoghue on the panel - thinks British viewers will be just as impressed by its format.
He said: "I have watched the American Voice and I love it. It’s amazing. I loved the concept of getting to work with singers where the audition is just based on their voices. The fact you can’t see the artists when they audition is what this show is all about.
"I am so glad I have got on board and I really do think the British viewers are going to be blown away by it."
During the 'blind auditions', hopefuls perform to the coaches while their backs are turned, meaning they can only be judged on their voice. If a coach likes what they hear, they turn their chair and the artist joins their team - but if more than one buzzes in, the artist chooses who to go with.
The Voice UK begins on March 24th on BBC One.