18 June 1989 at Crowborough
| 500cc | 350cc | 250cc |
| 1- Duncan Tolhurst | 1- Steve Carter | 1- Robert Ledwith |
| 2- Rob Cameron | 2- Alan Harmer | 2- Jonathan Duke |
| 3- Tommy Wilson | 3- Dave Mears | 3- Maxime Hill |
| RH Sidecars | LH Sidecars | |
| 1- Mick Cameron & Paul Randall | 1- Bob Miles & Keith Miles | |
| 2- Ian Aram & Ian Rohan | 2- Terry Pachol & Luke Pachol | |
| 3- Jerry Adams & Shaun Pittock | 3- Martin Bennett & Steve Tysoe |