Jason has been solving crosswords since going to university.  He started setting puzzles in 2014. His thematic barred puzzles appear regularly in the Enigmatic Variations, Inquisitor, Listener and Magpie (as Serpent).  He sets blocked puzzles for The Independent and The Daily Telegraph  (as Serpent), the Financial Times (Basilisk), The Guardian (Jack) and The Times. He sets thematic barred puzzles with eXternal (as eXtent) and Ferret (as Fer-de-lance).

Jason joined the editorial team at the Magpie in March 2017, providing general administrative support. He is now first test-solver and responsible for managing the editorial pipeline.