| Pos | Name | Year | Mtg | Race | Cl | Machine | Town | Laps | Time | Speed | ||
| 1 | Joey | Dunlop | 1978 | S100 | 120 | Solo Support | Yamaha | Ballymoney | ||||
| 2 | Graham | Young | 1978 | S100 | 120 | Solo Support | Yamaha | Belfast | ||||
| 3 | George | Fogarty | 1978 | S100 | 120 | Solo Support | Suzuki | Blackburn | ||||
| 4 | Ernie | Coates | 1978 | S100 | 120 | Solo Support | Yamaha | Belfast | ||||
| 5 | Monty | Swann | 1978 | S100 | 120 | Solo Support | Yamaha | London | ||||
| 6 | John | Knowles | 1978 | S100 | 120 | Solo Support | Yamaha | Penkridge | ||||
| 7 | Jim | Scott | 1978 | S100 | 120 | Solo Support | Anderson Yamaha | Coleraine | ||||
| 8 | Richard | Coates | 1978 | S100 | 120 | Solo Support | Yamaha | Castletown | ||||
| 9 | Geoff | Kelly | 1978 | S100 | 120 | Solo Support | Laverda | Jurby | ||||
| 10 | Brett | Gaites | 1978 | S100 | 120 | Solo Support | Honda | Ramsey | ||||
| 11 | Eddy | Dale | 1978 | S100 | 120 | Solo Support | Yamaha | Lincoln | ||||
| 12 | Mike | Ofield | 1978 | S100 | 120 | Solo Support | Norton | Wolverhampton | ||||
| 13 | Stephen | O'Brien | 1978 | S100 | 120 | Solo Support | Cowles Yamaha | Cwmbran | ||||
| 14 | Dave | Broadhead | 1978 | S100 | 120 | Solo Support | Yamaha | Foxdale | ||||
| 15 | Tom | Loughridge | 1978 | S100 | 120 | Solo Support | Suzuki | Heswall | ||||
| 16 | D | Connor | 1978 | S100 | 120 | Solo Support | Yamaha | |||||
| 17 | Barry | Cubbon | 1978 | S100 | 120 | Solo Support | Suzuki | Douglas | ||||
| 18 | Herbie | Kelly | 1978 | S100 | 120 | Solo Support | Yamaha | Castletown | ||||
| 19 | Allan | Brew | 1978 | S100 | 120 | Solo Support | Brew Suzuki | Ramsey | ||||
| 20 | Bruce | Vaughan | 1978 | S100 | 120 | Solo Support | Yamaha | Stourbridge | ||||
| 21 | Frank | Drinkwater | 1978 | S100 | 120 | Solo Support | Kawasaki | Port Erin | ||||
| 22 | Kenny | Kneen | 1978 | S100 | 120 | Solo Support | Yamaha | Douglas | ||||
| 23 | Peter | Cain | 1978 | S100 | 120 | Solo Support | Yamaha | Douglas | ||||
| 24 | Bill | Snelling | 1978 | S100 | 120 | Solo Support | Velocette | Laxey | ||||
| 25 | David | Innocent | 1978 | S100 | 120 | Solo Support | Rickman Norton | Doncaster | ||||
| 26 | Nick | Payton | 1978 | S100 | 120 | Solo Support | Velocette | London | ||||
| 27 | George | Ridgeon | 1978 | S100 | 120 | Solo Support | Ducati | D Hatherley | ||||
| 28 | Bernard | Wright | 1978 | S100 | 120 | Solo Support | Lockyam | Leeds | ||||
| 29 | Kenneth | Diggle | 1978 | S100 | 120 | Solo Support | Yamaha | Wigan | ||||
| ? | Colin | Bevan | 1978 | S100 | 120 | Solo Support | Pantall Kawasaki | Aberfan | ||||
| ? | Gary | Radcliffe | 1978 | S100 | 120 | Solo Support | Yamaha | Baldrine | ||||
| ? | Con | Law | 1978 | S100 | 120 | Solo Support | Yamaha | Ballymena | ||||
| ? | Jim | Dunlop | 1978 | S100 | 120 | Solo Support | Yamsel | Ballymoney | ||||
| ? | Ian | Andrews | 1978 | S100 | 120 | Solo Support | Weslake | Beverley | ||||
| ? | Glynn | Marriott | 1978 | S100 | 120 | Solo Support | Yamaha | Birkenhead | ||||
| ? | Lew | Batty | 1978 | S100 | 120 | Solo Support | Yamaha | Castleford | ||||
| ? | Decca | Kelly | 1978 | S100 | 120 | Solo Support | Yamaha | Castletown | ||||
| ? | David | Corris | 1978 | S100 | 120 | Solo Support | Honda | Douglas | ||||
| ? | Paul | Crellin | 1978 | S100 | 120 | Solo Support | Yamaha | Douglas | ||||
| ? | Danny | Shimmin | 1978 | S100 | 120 | Solo Support | IOMS Suzuki | Douglas | ||||
| ? | Ken | Richardson | 1978 | S100 | 120 | Solo Support | Triumph | Goole | ||||
| ? | Paul | Welburn | 1978 | S100 | 120 | Solo Support | Harris Yamaha | Goole | ||||
| ? | Bill | Barker | 1978 | S100 | 120 | Solo Support | Honda | Hebden Bdg | ||||
| ? | Bill | Bowman | 1978 | S100 | 120 | Solo Support | WLT Yamaha | Lancaster | ||||
| ? | Ned | Bowers | 1978 | S100 | 120 | Solo Support | Yamaha | Laxey | ||||
| ? | Ron | Jones | 1978 | S100 | 120 | Solo Support | Yamaha | Liverpool | ||||
| ? | Gary | Lingham | 1978 | S100 | 120 | Solo Support | Harris Yamaha | London | ||||
| ? | John | Stoddart | 1978 | S100 | 120 | Solo Support | Yamaha | Oban | ||||
| ? | Norman | Kneen | 1978 | S100 | 120 | Solo Support | Yamaha | Onchan | ||||
| ? | David | Harrison | 1978 | S100 | 120 | Solo Support | Yamaha | Port Erin | ||||
| ? | Peter | Davies | 1978 | S100 | 120 | Solo Support | Rickman Weslake | Presteigne | ||||
| ? | Peter | Kermode | 1978 | S100 | 120 | Solo Support | Velocette | Ramsey | ||||
| ? | Peter | Andrews | 1978 | S100 | 120 | Solo Support | Weslake | Wigan | ||||
| ? | Jack | Higham | 1978 | S100 | 120 | Solo Support | Hall Honda | Wigan |