15 July 1973 at Cross Houses
| Unlimited | RH Sidecars (3) | 500cc |
| 1- Chris Baybutt | 1- Roger Preece & Brian Dunn | 1- Chris Baybutt |
| 2- J. Webb | 2- T. Saunders & A. Davies | 2- Cyril Jones |
| 3- Cyril Jones | 3- ANOther | 3- D. Armstrong |
| RH Sidecars (2) | 300cc – 500cc | RH Sidecars (1) |
| 1- Roger Preece & Brian Dunn | 1- Cyril Jones | 1- Steve Smith & Roy French |
| 2- Baron Von Verlic & A. Prescott | 2- J. Webb | 2- Roger Preece & Brian Dunn |
| 3- T. Saunders & A. Davies | 3- R. Collins | 3- Lawson Crisp & Bob Wood |
| 250cc | ||
| 1- T. Owen | ||
| 2- Mick Burton | ||
| 3- R. Collins |