| 30.4.1966 | Tourist Trophy | 46 | #1021 | Richard Bond | L. N. Cussons | DNS |
| 30.4.1966 | Tourist Trophy | 48 | #1009 | Peter Sutcliffe | Peter Sutcliffe | 3rd |
| 1.5.1966 | SCCA National Virginia [CSR+DSR+ESR+FSR+GSR] | 22 | #1049 | Dick Thompson | | 1st |
| 1.5.1966 | USRRC Riverside | 43 | #1024 | Al Whatley | | DNF |
| 8.5.1966 | 500 mile Brands Hatch | 4 | #1002 | Ireland / Amon | F. English Ltd. | DNF |
| 8.5.1966 | 500 mile Brands Hatch | 5 | #1022 | Sutcliffe / Liddell | P. Sutcliffe | 2nd |
| 8.5.1966 | USRRC Laguna Seca | 43 | #1024 | Al Whatley | | DNA |
| 8.5.1966 | Targa Florio | 176 | #1007 | Ligier / Greder | Ford France | 12th |
| 14.5.1966 | Silverstone International | 23 | #1021 | Richard Bond | N. Cussons | DNF |
| 14.5.1966 | Silverstone International | 24 | #1022 | Eric Liddell | J. N. Cuthbert | DNF |
| 14.5.1966 | Silverstone International | 25 | #1038 | Skip Scott | Essex Wire Corp. | 6th |
| 14.5.1966 | Silverstone International | 26 | #1009 | Peter Sutcliffe | P. Sutcliffe | DNF |
| 15.5.1966 | SCCA National Cumberland [CSR+DSR+ESR+FSR] | 22 | #1049 | Dick Thompson | Grady Davis | 2nd |
| 22.5.1966 | USRRC Bridgehampton | 11 | #GT/103 | William Wonder | William Wonder | 15th |
| 22.5.1966 | USRRC Bridgehampton | 22 | #1049 | Dick Thompson | | 13th |
| 22.5.1966 | 1000 km Spa | 40 | #1009 | Sutcliffe / Redman | Peter Sutcliffe | 4th |
| 22.5.1966 | 1000 km Spa | 41 | #1039 | Müller / Mairesse | Scuderia Filipinetti | DNF |
| 22.5.1966 | 1000 km Spa | 42 | #1038 | Revson / Scott | Essex Wire Corporation | 3rd |
| 22.5.1966 | 1000 km Spa | 43 | #1026 | Hobbs / Neerpasch | Essex Wire Corporation | DNF |
| 22.5.1966 | 1000 km Spa | 44 | #1017 | Amon / Ireland | F. English Racing Ltd. | 5th |
| 29.5.1966 | Grovewood Trophy Mallory Park | 12 | #1009 | Peter Sutcliffe | P. Sutcliffe | 2nd |
| 29.5.1966 | Grovewood Trophy Mallory Park | 14 | #1021 | Richard Bond | L. N. Cussons | 5th |
| 29.5.1966 | Grovewood Trophy Mallory Park | 15 | #1022 | Eric Liddell | J. N. Cuthbert | 4th |
| 29.5.1966 | Labatt 50 Mont-Tremblant | 92 | #1037 | Eppie Wietzes | Comstock | 7th |
| 4.6.1966 | Player's 200 Mosport | 95 | #1037 | Eppie Wietzes | Comstock Racing Team | 6th |
| 4.6.1966 | Player's 200 Mosport | 111 | #GT/103 | William Wonder | William W. Wonder Inc. | 12th |
| 5.6.1966 | 1000 km Nürburgring | 44 | #1002 | Ireland / Salmon | Colonel R. J. Hoare F. English Ltd. | DNF |
| 5.6.1966 | 1000 km Nürburgring | 45 | #1003 | Schlesser / Ligier | Ford France | 5th |
| 5.6.1966 | 1000 km Nürburgring | 46 | #1026 | Revson / Scott | Essex Wire Corp. | DNF |
| 5.6.1966 | 1000 km Nürburgring | 47 | #1010 | Whitmore / Neerpasch | Essex Wire Corp. | DNF |
| 5.6.1966 | 1000 km Nürburgring | 48 | | Mairesse / Müller | Scuderia Filipinetti | DNA |
| 5.6.1966 | 1000 km Nürburgring | 49 | #1021 | Spence / Bond | Vixen Investments, Ltd. | 12th |
| 5.6.1966 | 1000 km Nürburgring | 50 | #1009 | Sutcliffe / Taylor | Red Rose Motors | 6th |
| 19.6.1966 | 24 h Le Mans | 12 | #1017 | Rindt / Ireland | Comstock Racing Team/F. R. English Ltd. | DNF |
| 19.6.1966 | 24 h Le Mans | 12B | #1039 | Mairesse / Neerpasch / Blank | Scuderia Filipinetti | DNA |
| 19.6.1966 | 24 h Le Mans | 14 | #1040 | Sutcliffe / Spoerry | Scuderia Filipinetti | DNF |
| 19.6.1966 | 24 h Le Mans | 15 | #1007 | Ligier / Grossman | Ford France | DNF |
| 19.6.1966 | 24 h Le Mans | 22 | #1021 | Cussons / Bond | Nick L .Cussons | DNA |
| 19.6.1966 | 24 h Le Mans | 25 | #1002 | Rindt / Ireland | F. R. English Ltd. | DNA |
| 19.6.1966 | 24 h Le Mans | 28 | #1009 | Sutcliffe / Ireland | Peter Sutcliffe | DNA |
| 19.6.1966 | 24 h Le Mans | 32 | #AM GT-1 | Johnson / Payne / Whitmore / Gardner | Alan Mann Racing Ltd. | DNA |
| 19.6.1966 | 24 h Le Mans | 33 | #AM GT-2 | Hill / Stewart / Hawkins | Alan Mann Racing Ltd. | DNA |
| 19.6.1966 | 24 h Le Mans | 59 | #1038 | Scott / Revson | Essex Wire Corporation | DNF |
| 19.6.1966 | 24 h Le Mans | 60 | #1001 | Neerpasch / Ickx | Essex Wire Corporation | DNF |
| 19.6.1966 | 24 h Le Mans | 63 | #1029 | Richard Holquist | Scuderia Bear | DNS |
| 26.6.1966 | Trophée d'Auvergne | 88 | #1003 | Jean-Michel Giorgi | | 6th |
| 26.6.1966 | GP Watkins Glen | 95 | #1037 | Eppie Wietzes | Comstock Racing Team | 14th |
| 2.7.1966 | BARC Crystal Palace [Special GT/Marque] | 60 | #1009 | Peter Sutcliffe | P. Sutcliffe | 1st |
| 2.7.1966 | BARC Crystal Palace [Special GT/Marque] | 61 | #1021 | Brian Redman | L. N. Cussons | 3rd |
| 2.7.1966 | BARC Crystal Palace [Special GT/Marque] | 62 | #1022 | Eric Liddell | J. N. Cuthbert | 2nd |
| 9.7.1966 | Martini Trophy Silverstone | 17 | #1026 | Mike Salmon | Michael Salmon | DNF |
| 9.7.1966 | Martini Trophy Silverstone | 24 | #1021 | Richard Bond | L. N. Cussons | 8th |
| 9.7.1966 | Martini Trophy Silverstone | 25 | #1022 | Eric Liddell | J. N. Cuthbert | 7th |
| 9.7.1966 | Martini Trophy Silverstone | 26 | #1009 | Peter Sutcliffe | Peter Sutcliffe | 6th |
| 10.7.1966 | MMRC Mont-Tremblant [Modified +1.0/Production +1.3] | 95 | #1037 | Eppie Wietzes | Comstock | 1st |
| 10.7.1966 | Pepsi-Cola Mont-Tremblant | 95 | #1037 | Eppie Wietzes | Comstock | 5th |
| 16.7.1966 | GP Brands Hatch | 43 | #1009 | Peter Sutcliffe | Peter Sutcliffe | DNA |
| 16.7.1966 | GP Brands Hatch | 45 | #1022 | Eric Liddell | J. N. Cuthbert | 11th |
| 17.7.1966 | GP Mugello | | #1048 | Maglioli / Casoni | | DNA |
| 24.7.1966 | SCCA National Connellsville [CSR+DSR+ESR+FSR] | 22 | #1049 | Dick Thompson | | DNA |
| 30.7.1966 | LCCC Oulton Park [Formula Libre] | 131 | #1021 | Nick Cussons | Nick Cussons | 2nd |
| 6.8.1966 | Anerley Trophy Crystal Palace | 66 | #1021 | Nick Cussons | Nick Cussons | ?th |
| 7.8.1966 | Coppa Citta di Enna | 54 | #1048 | Mario Casoni | Scuderia Brescia Corse | NC |
| 7.8.1966 | Coppa Citta di Enna | | #1039 | | | DNA |
| 14.8.1966 | Wills Trophy Croft | 51 | #1022 | Eric Liddell | Norman Cuthbert | DNF |
| 14.8.1966 | Benefactor Cup Croft | 51 | #1022 | Eric Liddell | Norman Cuthbert | 1st |
| 14.8.1966 | Wills Trophy Croft | 52 | #1021 | Nick Cussons | Nick Cussons | 8th |
| 14.8.1966 | Benefactor Cup Croft | 52 | #1021 | Nick Cussons | Nick Cussons | 3rd |
| 14.8.1966 | Wills Trophy Croft | 53 | #1001 | | Bernard White Racing | DNA |
| 20.8.1966 | H&DLLC Castle Combe [Sports] | 5 | | Patrick McNally | Patrick McNally | DNA |
| 21.8.1966 | 12 h Surfers Paradise | 2 | #1009 | Sutcliffe / Matich | Peter Sutcliffe (Racing) Ltd. | 2nd |
| 28.8.1966 | Hill Climb Sierre Montagna | 89 | #1014 | Karl Stewart Richardson | Karl Stewart Richardson | DNA |
| 29.8.1966 | Guards Trophy Brands Hatch | 18 | #GT/112 | Peter Sutcliffe | P. Sutcliffe | 6th |
| 29.8.1966 | Eagle Trophy Brands Hatch | 107 | #1002 | Innes Ireland | Col. R. J. Hoare/F. English Ltd. | 4th |
| 29.8.1966 | Eagle Trophy Brands Hatch | 108 | #1026 | Mike Salmon | Viscount Downe | 2nd |
| 29.8.1966 | Eagle Trophy Brands Hatch | 109 | #1001 | Alan Rees | Bernard White Racing | DNF |
| 29.8.1966 | Eagle Trophy Brands Hatch | 110 | #1022 | Eric Liddell | J. N. Cuthbert | 5th |
| 29.8.1966 | Eagle Trophy Brands Hatch | 111 | #1021 | Nick Cussons | L. N. Cussons | raced |
| 4.9.1966 | 500 mile Road America | 22 | #1049 | Thompson / Lowther | Grady Davis | DNF |
| 4.9.1966 | Santa Barbara [CSR+DSR+ESR+FSR+GSR] | 43 | #1024 | Al Whatley | A. T. Whatley | DNA |
| 4.9.1966 | ACIF Montlhéry | | | Jo Schlesser | | 1st |
| 11.9.1966 | 500 km Zeltweg | 1 | #1017 | Jochen Rindt | Fred English | 9th |
| 11.9.1966 | 500 km Zeltweg | 2 | #1001 | Innes Ireland | Bernard White | 10th |
| 11.9.1966 | 500 km Zeltweg | 3 | #1021 | Spence / Cussons | Nick L. Cussons | DNF |
| 11.9.1966 | 500 km Zeltweg | 7 | #1026 | Mike Salmon | John Downe | 4th |
| 11.9.1966 | 500 km Zeltweg | 8 | #1048 | Mario Casoni | Scuderia Brescia Corse | 7th |
| 11.9.1966 | Can-Am St. Jovite | 94 | #1037 | Eppie Wietzes | Comstock Racing Team | 13th |
| 11.9.1966 | Zolder | 101 | #1041 | "Jean Beurlys" | | 1st |
| 17.9.1966 | Gold Cup Oulton Park | 56 | #1021 | Nick Cussons | Nick Cussons | DNA |
| 24.9.1966 | Can-Am Mosport | 94 | #1037 | Eppie Wietzes | Comstock Racing Team | 6th |
| 25.9.1966 | Coupes de Paris [SP] | 52 | #1007 | Innes Ireland | Ford France | 1st |
| 25.9.1966 | Coupes de Paris [SP] | | #1003 | Jean-Michel Giorgi | Ford France | DNF |
| 1.10.1966 | 8 Clubs Silverstone [GT+1.6] | 216 | #1017 | Ron Fry | R. Fry | 1st |
| 2.10.1966 | Dunes Trophy Zandvoort | 2 | #1041 | "Jean Beurlys" | Jean Beurlys | DNA |
| 2.10.1966 | Guards Trophy Brands Hatch [S+2.5/GT+2.5] | | #1017 | Ron Fry | | 6th |
| 2.10.1966 | Westwood | | #1037 | Eppie Wietzes | Comstock | 1st |
| 8.10.1966 | BARC Silverstone [Special GT] | 88 | #1017 | Ron Fry | R. Fry | DNA |
| 9.10.1966 | Coupes du Salon | | #1007 | Jo Schlesser | Ford France | DNF |
| 16.10.1966 | 1000 km Paris | 34 | #1007 | Schlesser / Attwood | Ford France | DNF |
| 16.10.1966 | 1000 km Paris | 36 | #1048 | Vaccarella / Casoni | Mario Casoni | DNF |