4 October 1998 at Uddens
| RH Sidecars | Solos | 500cc Sidecars |
| 1- Ivor Matthews & Symon Wall | 1- Paul Hurry | 1- Paul Miller & Gary Lane |
| 2- Rob Wilson & Tony Miles | 2- Trevor Banks | 2- Steve Kenchington & Gary Hughes |
| 3- John Halsey & Jason Glennie | 3- Matthew Read | 3- Trevor Steward & Ronnie Steward |
5 July 1998 at Uddens
| 350cc | 500cc Sidecars | 250cc |
| 1- Jason Handley | 1- Lester Goodwin & Clive Goodwin | 1- Richard Smith |
| 2- Mark Taylor | 2- Mal Goodwin & Gary Rockell | 2- Mark Wadsworth |
| 3- Tony Atkin | 3- Lionel Cox & Grace Hagan | 3- Matt Read |