2 July 1978 at Clyst-St-Mary
| 500cc | RH Sidecars | 350 Open |
| 1- Peter Collins | 1- Pete Robson & Dave Hopes | 1- Mark Wadsworth |
| 2- Simon Wigg | 2- Roger Measor & Peter Dulake | 2- Graham Hurry |
| 3- Neil Farnish | 3- Dennis Teadale & Keith Chapman | 3- Alan Gardiner |
| American Style 750cc Dirt Track | ||
| 1- Les Collins | ||
| 2- Richard Moore | ||
| 3- Tom Leadbitter |
14 May 1978 at South Petherton
| Meeting Abandoned through bad weather | ||
| Unlimited (SW Centre Championship) | Solo Experts | Juniors |
| 1- Gerry Smith | 1- Mark Jarvis | |
| 2- Richard Eslick | RH Sidecar Experts | 2- Tony Usher |
| 3- Mike Davis | 3- Terry Cunningham | |
| Solo Open | ||
| RH Sidecars | RH Sidecars Juniors | |
| 1- Richard Peberdy & ANOther | RH Sidecar Open | 1- Phil Robson & Brian Rowsell |
| 2- Pete Robson & Dave Hopes | 2- Den Carter & Chris Carter | |
| 3- Terry Skinner & Ken Holifield | 350cc | 3- Andy Johnson & Clive Fry |