13 August 1989 at Thorrington
| 500cc | 350cc | 250cc |
| 1- S. Daw | 1- S. Carter | 1- A. Mower |
| 2- A. Mower | 2- M. Whiteman | 2- G. Brown |
| 3- D. Bishop | 3- P. Baker | 3- R. Smith |
| RH Sidecars | Wymondham – Woodbridge Challenge | 500cc Sidecars |
| 1- G. Parmenter & I. Jasper | E. Beales (Wymondham) | 1- B. Palmer & R. Steward |
| 2- A. Thomas & E. Sawyer | 2- J. Hathaway & G. Beales | |
| 3- J. Stafford & M. Stafford |