After four years, Toni Street and Mike Hosking are stepping down as co-hosts of TVNZ 1's Seven Sharp.

The pair made the announcement on air tonight during the penultimate show of 2017.

Source: 1 NEWS

An announcement on their replacements will be made in January, ahead of the show's return following the summer break.

Toni is cutting back on her weeknight work commitments to spend more time with her family.

"Seven Sharp has been my dream job, I’ve absolutely loved my four years with Mike on the show," she says.

"It's been a privilege to be part of such a professional, fun and supportive team. I’m really proud of our ratings success and grateful to have been welcomed into the homes of so many New Zealanders.

"This decision has not come easy for me, but with two young children, I want to be home more often in the evenings for them."

Mike says the feelings were mutual.

"This was particularly important to me personally to honour what has been one of the best combinations on television," he said.

"That given we started together we end together. It is also always good to leave on your own terms and at your own time, often a rare trick in media."

Toni will host TVNZ's coverage of the Commonwealth Games next year, as well as the New Zealander of the Year Awards.

She will also work on other projects within TVNZ.

John Gillespie, TVNZ's Head of News and Current Affairs, said the company was working through potential opportunities with Mike for the future.

He paid tribute to their contribution.