Astra 1973
Club Championship
2 September at Rochester Airport
| 340cc – 650cc | RH Sidecars |
| 1- John Britcher | 1- Dave Heath & Dave Ell |
| 2- Roland Duke | 2- B. Stanford & B. Stanford |
| 3- Stan Luck | 3- Mick Cameron & ANOther |
British International Class Championship
16 September at County Show Ground, Detling
| International Solos | National Sidecars | National Solos |
| 1- Roland Duke | 1- D. Heath & D. Ell | 1- S. Luck |
| 2- Peter Collins | 2- B. Stanford & B. Stanford | 2- A Johnson |
| 3- Reg Luckhurst | 3- M. Palmer & J. Bainbridge | 3- N. Smith |
