29 June 1991 at Frittenden
| 500cc | 350cc | 250cc |
| 1- Steve Wilson | 1- Pete Colvin & Adam Cowper-Smith | 1- Chris Tritton |
| 2- Ricky Sandford | 2- Tim Bennett & Jason Glennie | 2- Ricky Sandford |
| 3- Duncan Tolhurst | 3- Jerry Adams & Shaun Pittock | 3- Ben Howe |
| 350cc | LH Sidecars | 250cc |
| 1- Mark Whiteman | 1- Dave Penfold & Steve Farmer | 1- John Dormer |
| 2- Jonathan Duke | 2- Luke Patchol & Julian Browning | 2- Dean Camier |
| 3- Dave Mears | 3- Bob Miles & Keith Miles | 3- Wayne Andrews |