Douglas, Isle of Man, Great Britain
Circuit Type: Temporary street circuit
New layout
Extension: 6,240 Km
Lap Record: 3:08.000
Year: 1950
Driver: Reg Parnell
Car: Maserati 4CLT/48
Speed: 117,268 Km/h
Pole Record: 3:06.000
Year: 1949
Driver: Reg Parnell
Car: Maserati 4CLT/48
Speed: 120,852 Km/h
| Year | Official Name | Date | Winning Driver | Constructor | Laps | Time | Formula |
|---|---|---|---|---|---|---|---|
| 1950 | 12th British Empire Trophy | June 15 |  Bob Gerard |
ERA |
36 |
01:59:36.800 | F1EC |
| 1949 | 11th British Empire Trophy | May 26 | Bob Gerard |
ERA |
36 |
01:57:54.000 | GP |
| 1948 | 10th British Empire Trophy | May 25 | Geoffrey Ansell |
ERA |
36 |
02:03:45.000 | GP |
| 1947 | 9th British Empire Trophy | August 21 | Bob Gerard |
ERA |
40 |
02:16:52.000 | GP |