Johnson was promoted to the first team ahead of the 2019 after an incredible debut season with the Academy. He joined the Academy from Castleford Lock Lane and only missed one game all season after converting from a half back to hooker.
He was part of the team who played in the Academy Grand Final and was then named in the England Academy side to face the Australian schoolboys. A year earlier Johnson was a try scorer in England Youth’s win over France at the Med-A-Hose Jungle.
In 2018 he agreed a new four year deal that will keep him at Emerald Headingley until at least the end of the 2022 season.