2 July 1978 at Alberbury
| Unlimited | RH Sidecars | 500cc |
| 1- Terry Owen | 1- John Metcalfe & Brian Ayron | 1- Dave Siergiejew ? |
| 2- Cyril Jones | 2- Peter Spencer & Peter Orchard | 2- Tim Curnock |
| 3- Ross Winwood | 3- Roger Reece & Brian Dunn | 3- John Jones |
| 350cc | 250cc | |
| 1- Andy Brown | 1- Clayton Williams | |
| 2- Phil Alderman | 2- Peter Morris | |
| 3- Clayton Williams | 3- Peter Sweet |