The identity of the winner of New Zealand's Got Talent is shrouded in secrecy until tonight's grand final show.

But English-born judge Ali Campbell says the New Zealand voters have got it right with their choice for the TV talent series' inaugural victor.

The winner - chosen by a public vote, which included tens of thousands of text votes in the last days before the cut-off - will be revealed in the TV One show starting tonight at 7.30pm.

The finale was filmed on Thursday, and Campbell told Sunday News: "Who won it is an amazing act.

"New Zealand got it right . . . I wouldn't have wanted to have chosen who got it right. It was bad enough putting people through [to the semifinals]."

Earlier in the series, Campbell and fellow judges, Kiwi supermodel Rachel Hunter and Opshop frontman Jason Kerrison, selected who eventually graduated to the semis. Campbell himself makes a special on-stage performance in tonight's show, accompanied by Samoan backing musicians.

Superstar Campbell said New Zealand's Got Talent was a "brilliant" series.

"It is a variety show and the emphasis is on variety," he said.

"That is why you get dog acts, jugglers, percussionists and all different types [of performers]. That's what it is about and that is why I like the show ... it is family entertainment, light entertainment and it shouldn't harm anybody."

Campbell said he would be keen to return if there was a second series next year.

But he added: "I think if I was to do it again, I would probably base myself in Sydney, I guess, try and tour around Australia and then fly in and film the shows. It would mean that I can keep my band going."

- © Fairfax NZ News