13 September 1970 at Hayes
| Unlimited | 340cc – 500cc | 350cc |
| Not Run | 1- C. Sweby | 1- C. Sweby |
| 2- D. Welch | 2- M. Baker | |
| 3- R. Elmore | ||
| RH Sidecars (2) | 250cc | RH Sidecars (1) |
| 1- T. Lincoln & B. Stevens | 1- F. Watts | 1- T. Lincoln & B. Stevens |
| 2- ANOther | 2- M. Price | 2- D. Ellis & D. Emmett |
| 3- T.Chapman & K. Thorpe | 3- D. Lemon | 3- T.Chapman & K. Thorpe |