A tobacco giant is threatening the Government with legal action over its vaping review.

Newstalk ZB has seen documents that reveal British American Tobacco is calling in the lawyers over a review of the country's vaping substances, including high nicotine levels.

Our newsroom understands questions remain over the compliance of almost 1700 products in New Zealand - with 466 already removed.

Massey University adjunct professor of law, Chris Gallavin, told Tim Dower the Government should be doing what it can to avoid litigation.

He says officials should be seeing whether they can work it out, without needing to go through the courts.

LISTEN ABOVE