Incorporating The Blaster
20 May 1990 at Bethersden
| 500cc A | British Championship LH Sidecars | 500cc B |
| 1- Grant Faulkner | 1- Ernie Penfold & Jason Brookes | 1- Tommy Palmer |
| 2- Will James | 2- John Tysoe & Julian Browning | 2- Alan Harmer |
| 3- Robert Ledwith | 3- Mick Cameron & Graham Hilton | 3- Tom Wilson |
| 4- Robert Heath & Andy Butler | ||
| RH Sidecars A | 5- Bill Penfold & Nigel Shaw | RH Sidecars B |
| 1- Pete Colvin & Gary Pease | 6- Terry Pachol & Luke Pachol | 1- Jerry Adams & Shaun Pittock |
| 2- John Halsey & Clive Puddifoot | 2- Mick Baxter & Vaughan Roberts | |
| 3- Roger Measor & Steve Bailey | LH Sidecars B | 3- Rob Wilson & Vince Jones |
| 1- Geoge Penfold & J. Spalding | ||
| 2- John Arnott & Paul Bolton | ||
| 3- M. Norris & D. Norris |