In his first season of Formula Ford 1600 in 1986, he won eight of the 12 Dunlop-Autosport Star of Tomorrow rounds on his way to the title and scored a championship double by claiming the Townsend Thoresen Junior FF1600 series.

In 1987, Warwick moved up to Formula Ford 2000 and was the Euroseries runner-up to future Grand Prix driver JJ Lehto.

The car was poor and Warwick was unable to shine at the rounds he contested, but he adapted to the power increase with some competitive showings.

Warwick dominated the first five races of 1991, scoring five pole positions, five fastest laps, four lap records and five wins, but he was killed in an accident at the fifth event of the season at Oulton Park race circuit, Cheshire.

Warwick had scored enough points in the races he had contested to allow him to win the British Formula 3000 championship.