Nicoll was one of the top riders in the Motocross Grand Prix World Championships during the late 1980s and early 1990s, finishing as the runner up four times in the F.I.M.
[1] Nicoll won 13 World Motocross Grands Prix and 7 ACU British National Championships.
Nicoll was a member of the victorious 1994 British Motocross des Nations team that included Paul Malin and Rob Herring.
[2] The upset victory marked the first time a British team had won the event since 1967 and, broke a 13-year American winning streak at the Motocross des Nations.
Nicoll is currently General Manager of Travis Pastrana's Nitro Circus in North America.