| Pos | Name | Year | Mtg | Race | Cl | Machine | Town | Laps | Time | Speed | ||
| 1 | Peter | Inchley | 1966 | S100 | 45 | 250cc Race | Starmaker | W.Hagley | ||||
| 2 | Derek | Chatterton | 1966 | S100 | 45 | 250cc Race | Yamaha | Boston | ||||
| 3 | Brian | Duffy | 1966 | S100 | 45 | 250cc Race | Yamaha | Solihull | ||||
| 4 | Alan | Dickinson | 1966 | S100 | 45 | 250cc Race | Bultaco | Liverpool | ||||
| 5 | T | Wall | 1966 | S100 | 45 | 250cc Race | Greeves | Morecambe | ||||
| 6 | Don | Padgett | 1966 | S100 | 45 | 250cc Race | Yamaha | Batley | ||||
| 7 | Brian | Ball | 1966 | S100 | 45 | 250cc Race | Yamaha | St Helens | ||||
| 8 | Maurice | Price | 1966 | S100 | 45 | 250cc Race | Yamaha | Doncaster | ||||
| 9 | Peter | Padgett | 1966 | S100 | 45 | 250cc Race | Yamaha | Batley | ||||
| 10 | Len | Ireland | 1966 | S100 | 45 | 250cc Race | Greeves | Antrim | ||||
| 11 | Neil | Kelly | 1966 | S100 | 45 | 250cc Race | R.Enfield | Douglas | ||||
| 12 | H M | Cumming | 1966 | S100 | 45 | 250cc Race | Ducati | Millom | ||||
| 13 | Dougie | Rose | 1966 | S100 | 45 | 250cc Race | Honda | N'hants | ||||
| 14 | R W | Bryant | 1966 | S100 | 45 | 250cc Race | Cotton | Bucks | ||||
| 15 | J | Ashton | 1966 | S100 | 45 | 250cc Race | Cotton | Liverpool | ||||
| 16 | Danny | Shimmin | 1966 | S100 | 45 | 250cc Race | Bultaco | Douglas | ||||
| 17 | Malcolm | Sharrocks | 1966 | S100 | 45 | 250cc Race | Aermacchi | Douglas | ||||
| 18 | John | Gribbin | 1966 | S100 | 45 | 250cc Race | R.Enfield | Isle of Man | ||||
| 19 | G H | Ward | 1966 | S100 | 45 | 250cc Race | DMW | Hale | ||||
| 20 | Peter | Eberhardt | 1966 | S100 | 45 | 250cc Race | Bultaco | Isle of Man | ||||
| 21 | Lawrence | Evans | 1966 | S100 | 45 | 250cc Race | DMW | Eccles | ||||
| 22 | G D C | Costain | 1966 | S100 | 45 | 250cc Race | Triumph | Isle of Man | ||||
| 23 | R J | Brinnard | 1966 | S100 | 45 | 250cc Race | Norton | Shrewsbury | ||||
| ? | P | McGarrighty | 1966 | S100 | 45 | 250cc Race | Aermacchi | Belfast | ||||
| ? | George | Short | 1966 | S100 | 45 | 250cc Race | DMW | Bootle | ||||
| ? | Bill | Smith | 1966 | S100 | 45 | 250cc Race | Bultaco | Chester | ||||
| ? | E O | Ditchfield | 1966 | S100 | 45 | 250cc Race | DMW | Frodsham | ||||
| ? | D | Eaton | 1966 | S100 | 45 | 250cc Race | Bultaco | Huyton | ||||
| ? | I | Elder | 1966 | S100 | 45 | 250cc Race | Ducati | Isle of Man | ||||
| ? | Bob | Kewley | 1966 | S100 | 45 | 250cc Race | Greeves | Isle of Man | ||||
| ? | N | McKibbin | 1966 | S100 | 45 | 250cc Race | Cotton | Isle of Man | ||||
| ? | John H | Molyneux | 1966 | S100 | 45 | 250cc Race | Honda | Isle of Man | ||||
| ? | Harry | Wade | 1966 | S100 | 45 | 250cc Race | Ducati | Laxey | ||||
| ? | P J | Atkins | 1966 | S100 | 45 | 250cc Race | Greeves | Liverpool | ||||
| ? | D | Evans | 1966 | S100 | 45 | 250cc Race | Yamaha | Liverpool | ||||
| ? | G V | Taylor | 1966 | S100 | 45 | 250cc Race | Cotton | Liverpool | ||||
| ? | P | Sadler | 1966 | S100 | 45 | 250cc Race | Greeves | Morecambe | ||||
| ? | W | Purnell | 1966 | S100 | 45 | 250cc Race | Velocette | Newport | ||||
| ? | David | Harrison | 1966 | S100 | 45 | 250cc Race | Greeves | Port Erin | ||||
| ? | C | Carr | 1966 | S100 | 45 | 250cc Race | Bultaco | Preston | ||||
| ? | John | Wetherall | 1966 | S100 | 45 | 250cc Race | Cotton | Reading | ||||
| ? | Vic J | Wright | 1966 | S100 | 45 | 250cc Race | Greeves | Sheffield | ||||
| ? | G A | Kennedy | 1966 | S100 | 45 | 250cc Race | Greeves | Slough | ||||
| ? | Dave | Kirwan | 1966 | S100 | 45 | 250cc Race | MV Starmaker | Wallasey | ||||
| ? | T J | Strong | 1966 | S100 | 45 | 250cc Race | MV Starmaker | Wallasey | ||||
| ? | Brian J | Davis | 1966 | S100 | 45 | 250cc Race | DMW | Warwick | ||||
| ? | J | Swannick | 1966 | S100 | 45 | 250cc Race | R.Enfield | Worksop | ||||
| ? | T | Goard | 1966 | S100 | 45 | 250cc Race | Greeves | |||||
| R | Brian J | Warburton | 1966 | S100 | 45 | 250cc Race | Yamaha | Stockport |