At the end of , Ryton was offered the position of Technical Director of the new EuroBrun team, which was never competitive and withdrew from F1 before the end of the season. Ryton then moved to become Chief Designer at Tyrrell under Harvey Postlethwaite from to , when he was dropped after the team lost its sponsorship deals.
Ryton returned to work for Barnard, who had briefly moved to work for Benetton but was now back at Ferrari. On this occasion, Ryton's job was slightly different, as he was put in charge of the team's drawing office at its Maranello base. He remained in this position until , when he accepted the position of Technical Director at the small Forti team.
After designing the FG03 chassis, Ryton was left without a job when the team folded mid-season. However, he was soon appointed Head of Research and Development at the Ligier team, which was bought by former F1 champion Alain Prost soon afterwards and took his name. In , the Prost AP01's unreliable and heavy gearbox saw him fall from favour and he moved to Minardi.
Ryton stayed at Minardi until the season-ending Japanese Grand Prix in , firstly as Chief Designer but latterly as a design consultant.
Having left F1, Ryton now works as an independent consultant in Cornwall.