| Pos | Name | Year | Mtg | Race | Cl | Machine | Town | Laps | Time | Speed | ||
| 1 | Derek | Ennett | 1955 | S100 | 1 | 350cc Race | AJS | Castletown | 12 | 39'51.2 | 76.79 | |
| 2 | Dave | Chadwick | 1955 | S100 | 1 | 350cc Race | Norton | Manchester | 12 | 39'51.8 | 76.75 | |
| 3 | Dennis | Pratt | 1955 | S100 | 1 | 350cc Race | BSA | Sedburgh | 11 | |||
| 4 | Dennis | Christian | 1955 | S100 | 1 | 350cc Race | BSA | Isle of Man | 11 | |||
| 5 | Edward | Hunt | 1955 | S100 | 1 | 350cc Race | Velocette | Stevenage | 11 | |||
| 6 | P H | Beighton | 1955 | S100 | 1 | 350cc Race | AJS | 11 | ||||
| 7 | V L | Green | 1955 | S100 | 1 | 350cc Race | AJS | |||||
| 8 | John | Holder | 1955 | S100 | 1 | 350cc Race | BSA | |||||
| 9 | D E | Burns | 1955 | S100 | 1 | 350cc Race | BSA | |||||
| 10 | T H | Anyon | 1955 | S100 | 1 | 350cc Race | BSA | |||||
| 11 | K | Ratcliffe | 1955 | S100 | 1 | 350cc Race | Norton | |||||
| 12 | D F | Thompson | 1955 | S100 | 1 | 350cc Race | BSA | |||||
| 13 | E P | Davies | 1955 | S100 | 1 | 350cc Race | BSA | |||||
| 14 | F J | Steele | 1955 | S100 | 1 | 350cc Race | BSA | |||||
| R | Gavin | Dunlop | 1955 | S100 | 1 | 350cc Race | AJS | New Zealand | ||||
| R | Kipper | Killip | 1955 | S100 | 1 | 350cc Race | BSA | Crosby | ||||
| R | L | Smith | 1955 | S100 | 1 | 350cc Race | Norton | |||||
| R | R F | Miller | 1955 | S100 | 1 | 350cc Race | BSA | |||||
| R | G R | Jealous | 1955 | S100 | 1 | 350cc Race | BSA | |||||
| R | J T | Griffiths | 1955 | S100 | 1 | 350cc Race | BSA | |||||
| R | W E | Goldie | 1955 | S100 | 1 | 350cc Race | BSA | |||||
| NS | Ray | Kelly | 1955 | S100 | 1 | 350cc Race | Unspecified | Port Erin | ||||
| NS | Alastair | King | 1955 | S100 | 1 | 350cc Race | AJS | Glasgow | ||||
| NS | Jack | Wood | 1955 | S100 | 1 | 350cc Race | BSA | Douglas | ||||
| NS | Eddie | Crooks | 1955 | S100 | 1 | 350cc Race | Norton | Douglas | ||||