26 October 1980 at Portsmouth Airport
| Portsmouth Open Solo Championship | 500cc Sidecars | 500cc Expert |
| 1- Steve Schofield | 1- John Elliott & Paul Mossman | 1- Steve Schofield |
| 2- Keith Richards | 2- John Pepper & G. Bell | 2- Graham Hurry |
| 3- Barry Hazelton | 3- John Burroughs & Gregory Clark-Ward | 3- Andy Campbell |
| 500cc Novice | ||
| 1- P. Harris | ||
| 2- S. Henderson | ||
| 3- Martin Hook |
31 August 1980 at The Airport
| 500cc | 350cc | 250cc |
| 1- Simon Wigg | 1- Steve Schofield | 1- Richard Wakeling |
| 2- Jeremy Doncaster | 2- John Underwood | 2- Keith Richards |
| 3- Trevor Banks | 3- Chris Pidcock | 3- Clayton Williams |
| RH Sidecars | 500cc Sidecars | |
| 1= Steve Smith & Trevor Pye | 1= Steve Smith & Trevor Pye | |
| 1= Steve Dewison & Martin Paul | 1= Ken Smith & Dave Brown | |
| 3= Roger Measor & Jeff Measor | For the First Leg: See Evesham | 3- John Elliott & Paul Mossman |
| 3= Ken Jones & Steve Wheeler | For the Third Leg: See BSSA |