Northcroft was co-author of The Manchester United Opus alongside Hugh McIlvanney, Patrick Barclay and Jim White amongst others. A copy of the book signed by the Prime Minister and ruler of Dubai, Sheikh Mohammed bin Rashid al-Maktoum was sold at auction for $1.6m, which was a world record price for a sporting publication.
Whilst covering the 2018 FIFA World Cup for The Sunday Times Northcroft lost at a game of darts against England midfielder Dele Alli and the encounter formed part of the title of his 2018 book about his experiences at the World Cup in Russia, entitled Deadlines, and Darts with Dele. My World Cup Diary: England's Rebirth in Russia and other Unexpected Tales.
Northcroft has been a guest on The Anfield Wrap, BBC Radio 5 live,  RTÉ Radio 1 show Today with Seán O'Rourke, Planet Futbol with Grant Wahl, The Totally Football Show and The Totally Scottish Football show, as well numerous appearances on The Times own The Game podcast. Northcroft has also contributed articles and appeared at live events for The Blizzard.
Northcroft was the inaugural winner of the ‘Jim Rodger Memorial Award’ for young sports writers in Scotland. Northcroft was shortlisted for ‘Feature Writer of the Year’ at the Sports Journalists Association awards in 2006 and for ‘Football Writer of the Year’ in 2016. He was nominated for ‘Best New Writer’ at the 2017 British Sports Book Awards. On the 31 October 2018, it was announced that Northcroft has been nominated in the ‘Writer of the Year’ category at the 2018 Football Supporters Federation Awards.
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