28 August 1966 at Stockbury
| 500cc | RH Sidecars | 350cc |
| 1- D. Baybutt | 1- M. Webster & J. Justice | 1- C. Packman |
| 2- C. Packman | 2- D. Lofthouse & E. Crawford | 2- P. Randall |
| 3- A. Angear | 3- A. Martin & C. Rossiter | 3- D. Baybutt |
| RH (Scratch One) | 250cc Invitation | RH (Scratch Two) |
| R. Waters & G. Croucher | D. Baybutt | R. Waters & G. Croucher |
| Solo Invitation | 500cc (Scratch) | |
| A. Angear | J. Britcher |