15 July 1990 at Bishops Waltham
| 500cc | RH Sidecars | 350cc |
| 1- Mark Seabright | 1- Dave Steer & Mick Cave | 1- Mark Seabright |
| 2- Dave Plain | 2- Reg Blackbourn & Colin Blackbourn | 2- Dave Plain |
| 3- Paul Smith | 3- Rob Cameron & Steve Smith | 3- Roy Sizmore |
| 250cc | ||
| 1- Dave Bleaken | ||
| 2- Bernie Edwards | ||
| 3- John Wicks |
Saturday 14 July 1990 at Bishops Waltham
| 500cc | RH Sidecars | 350cc |
| 1- John Wicks | 1- Tom How & Tony Bemister | 1- Andy Wickham |
| 2- Paul Mitchell | 2- Rob Cameron & Steve Smith | 2- Ian Noel |
| 3- Mike Trevett | 3- Les Saunders & Shane Lapham | 3- Mike Bowden |
| 250cc | ||
| 1- Phil Sims | ||
| 2- Mike Bowden | ||
| 3- Bill Sims |