JACK Irvine formed his Glasgow-based communications company, Media House International, in 1991 after a long career in newspapers.

Over 24 years, he worked at the Daily Record, the Sunday Scot, The Herald and the Scottish Sun, where he was editor.

His business specialises in “crisis management” and is not unused to handling controversial issues.

Last year, it represented Steven Purcell, the former Glasgow City Council leader, after he resigned his post citing stress amid reports he sought treatment at a drugs rehabilitation clinic.

In 2000, the company came to prominence when it ran the campaign to keep the ban on schools teaching about homosexuality.

According to the PR firm’s website, Mr Irvine “specialises in international litigation and is a founding partner of Tactical Response, a confidential consultancy that advises boards on sensitive matters such as extortion, terrorism, fraud and abduction”.

Earlier this year, Media House was reportedly called in to help fight a £100 million legal case in New York, involving a small UK technology company and food giant Tate & Lyle.

Media House also has offices in London, Edinburgh and New York. It has for the past six years been an adviser to Rangers FC.

Mr Irvine recently finished three-year stints as a board member of the Scottish North American Business Council and the Royal Scottish National Orchestra. He was on the working party examining public perception of the Scottish Parliament.

In the US, he advises The American-Scottish Foundation.