The upgrade will allow the pressroom to produce up to 150,000 full-colour, 128pp tabloids every hour, doubling its capacity from the current 75,000 copies per hour.

Two H-type eight-couple printing towers and an additional Patostar automatic reelstand will be built at the site, while four additional printing couples will be added to existing towers.

Newsquest Glasgow production editor Alistair Gay said: “This investment will allow us to extend paginations and colour, while maintaining the quality for which we are renowned.”

As well as printing Newsquest’s The Herald, Sunday Herald and Evening Times, the plant currently contract prints the Daily Mail and Mail on Sunday for Associated Newspapers.

More than 26 titles are produced at the plant each week with 4.5m copies being printed in total.

Herald and Times Group regional managing director Tim Blott said: “We are delighted to have finally concluded agreements with Associated Newspapers and KBA on this major expansion of our presses, securing the future of our Glasgow plant.”