28 July 1957 at Witham Marsh Farm
| 500cc | RH Sidecars | 350cc |
| 1- Harold Sansby | 1- Harold Hill | 1- Harold Sansby |
| 2- Bill Bridgett | 2- Bill Evans | 2- Bill Bridgett |
| 3- Ivor Brown | 3- Alf Ellis | 3- Austin Cresswell |
| 250cc | W.P. Maidens Trophy | |
| 1- Norman Francis | 1- Arthur Stuffins | |
| 2- Jackie Sewell | 2- Harold Sansby | |
| 3- Ken Greer | 3- Austin Cresswell |