3 April 1966 at Rhodes Minnis
| 500cc | RH Sidecars | 350cc |
| 1- D. Godden | 1- M. Webster & J. Justice | 1- D. Godden |
| 2- M. Simmons | 2- P. Pithie & B. Woodwards | 2- T. Black |
| 3-D. Baybutt | 3- J. Waller & N. Wager | 3-D. Baybutt |
| 4- L. Coffin | 4- D. Hunt & R. Worthing | 4- S. Luck |
| 5- T. Black | 5- R. Woolard & E. Gypps | 5- D. Andrews |
| 6- G. Goodwin | 6- P. Randall | |
| RH Sidecar (Invitation) | ||
| Solo (Invitation) | R. Samson & C. Woodwards | Solo (Scratch) |
| D. Andrews | M. Simmons | |
| RH Sidecar (Scratch) | ||
| 350cc (Scratch) | M. Webster & J. Justice | 250cc (Scratch) |
| D. Godden | D. Palmer |
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