10 September 1972 at Detling Show Ground
| Invitation (Non-Finalists) | LH Sidecars (Detling Trophy) | 351cc – 650cc |
| 1- ANOther | 1- E. Penfold & J. Smith | 1- R. Schofield |
| 2- B. Cree | 2- P. Duke & D. Waters | 2- L. Bonds |
| 3- G. Hickmott | 3- C. Ormerod & D. Simmonds | 3- A. Kite |
| 251cc – 350cc | LH Sidecars | 250cc |
| 1- C. Rolfe | 1- G. Smith & A. Rouse | 1- R. Oakley |
| 2- C. Flexman | 2- E. Penfold & J. Smith | 2- C. Packman |
| 3- D. Spain | 3- D. Aungier & J. Pout | 3- B. Edwards |