Harvey Postlethwaite
While at Tyrrell he worked for designer Harvey Postlethwaite, who came to hold Gascoyne in such regard that when Postlethwaite departed in 1991 to design the Sauber team's first Formula One car, he took the twenty-eight-year-old engineer with him to Switzerland. Postlethwaite's stay with the Sauber team was short, but Gascoyne remained for the first season, his Sauber C13 chassis taking 12 points during 1993.