4 July 1999 at Frittenden
| Unlimited (Preece Trophy) | RH Sidecars | 500cc |
| 1- Matt Read | 1- Dave Steer & Rob Szarek | 1- Simon Davey |
| 2- Richard Smith | 2- Vaughan Roberts & Terry Madley | 2- Matt Read |
| 3- Keith Strudwick | 3- Lee Ray & Nicky Owen | 3- Mark Giles |
| 350cc | LH Sidecars | 250cc |
| 1- Dave Rumsey | 1- Hywel Phillips & James Moss | 1- Lee Street |
| 2- Richard Smith | 2- Tony Penfold & Carl Bell | 2- Adam Shipp |
| 3- Phil Ranson | 3- Martin Jones & Mike Harrison | 3- Keith Strudwick |