Greg Mosse was the founder of the Criterion New Writing programme based at the Criterion Theatre in London’s West End in 2015 and has written and produced 25 plays and musicals at venues including Chichester Festival Theatre, Portsmouth Guildhall and Worthing Theatre.

Since lockdown, he has turned to writing novels, despite being married to best-selling novelist Kate Mosse, and his latest book, The Coming Fire, the third in a series that he began writing during lockdown, was published by Moonflower Books on 17 July 2025.

BTG Editor David Chadderton spoke to Greg just before the new book was released about the series and how he came to write it, as well as about the Criterion New Writing programme—for which he encourages mid-career theatre writers to apply—having two writers working in the same house and lots more about the process of writing and the current new writing scene in British theatre.

Applications for the 2026 Criterion New Writing programme will open on 1 September 2025.