| Date | Saturday 18 May 1957 |
| Event | Maidstone and Mid-Kent MC |
| Circuit | Silverstone |
| Event Format | Race of 15 laps |
| Championship | Non-championship |
| Race number | #7 of 12 in 1957 #272 (of all time) |
| Laps | 15 |
| Circuit Perimeter | 2588 m |
| Race Distance | 2588 × 15 = 38.820 km |
| Entries | 4 |
| Qualifiers | No qualifying session |
| Finishers | 4 |
| Debutants |
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| Milestones | Climax – 1st Win (Engine Manufacturer)
Cooper – 1st Win (Car Manufacturer)
Tony Marsh – 1st Win (Driver)
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