A TV campaign is set to encourage the public to report tax dodgers.
The Revenue said the public is concerned about tax dodgers
The £1.7m campaign by HM Revenue & Customs (HMRC) will urge people to call a hotline if they suspect someone of not paying their taxes.
The TV advert shows a workman in a pub bragging about not paying tax and never giving his customers receipts.
Similar adverts have been running in the written press and on the radio and had led to a "huge increase" in people reporting tax cheats, the HMRC said.
Easy to call
"Honest members of the public are clearly concerned about people who avoid paying their taxes, and now that we have a dedicated hotline number
it's easy for people to call us and we'll do something about it," said HMRC chairman Sir David Varney.
The HMRC hotline is open seven days a week from 8am to 8pm on 0800 788 887.
In January, the Federation of Small Business (FSB) complained to the Advertising Standards Authority (ASA) about a press advert for the hotline.
Using an image of a plumber hiding under a sink, the advert encouraged people to report self-employed workers who avoid paying their taxes.
The FSB claimed the advert was "harmful and misleading".
Revenue & Customs apologised if the intention behind the advert had been misinterpreted.