| 6.3.1966 | BRSCC Brands Hatch [Special GT] | | Griffith | Tony Lanfranchi | | 3rd |
| 11.4.1966 | BRSCC Mallory Park [Marque] | 155 | | Colin Ham | C. R. Ham | raced |
| 16.4.1966 | LCCC Oulton Park [Sports/GT] | 24 | | Max Clough | Max Clough | DNA |
| 24.4.1966 | BARC Brands Hatch [Marque] | 135 | Grantura | John Wingfield | J. B. Wingfield | ?th |
| 24.4.1966 | BARC Brands Hatch [Marque] | 136 | Grantura | D. Allinson | D. Allinson | DNA |
| 30.4.1966 | SCCA Regional Thompson [Main] | | | Gerald Sagerman | | ?th |
| 7.5.1966 | BARC Oulton Park [Marque] | 53 | Grantura | Tommy Entwistle | Tom Entwistle | DNA |
| 8.5.1966 | 500 mile Brands Hatch | 6 | Griffith 200 | Simpson / Hardwick | P. J. Simpson | 11th |
| 8.5.1966 | 500 mile Brands Hatch | 28 | Grantura 1800 S | Lanfranchi / Marshall | Barnet Motor Co. Ltd. | DNF |
| 8.5.1966 | 500 mile Brands Hatch | 29 | Grantura 1800 S | Wingfield / Entwistle | J. B. Wingfield | DNF |
| 8.5.1966 | SMRC Ingliston [S/Special GT+1.2] | 31 | | Ronnie Ballantine | J. R. Ballantine | 7th |
| 8.5.1966 | SMRC Ingliston [S/Special GT+1.2] | 32 | | T. J. Henderson | T. J. Henderson | 10th |
| 8.5.1966 | 500 mile Brands Hatch | 38 | Grantura 1800 S | Ham / Ham | Ronway Engineering Co. Ltd. | DNF |
| 15.5.1966 | SCCA National Cumberland [DP] | 8 | | Leonard Anderson | Leonard Anderson | DNA |
| 15.5.1966 | SCCA National Cumberland [DP] | 53 | | Mary Collins Mims | Mary Collins Mims | DNA |
| 28.5.1966 | MCMRC Oulton Park [GT] | 35 | | Max Clough | Max Clough | DNA |
| 28.5.1966 | MCMRC Oulton Park [Sports] | 44 | Griffith | Ted Worswick | Ted Worswick | DNA |
| 28.5.1966 | MCMRC Oulton Park [GT] | 44 | Griffith | Ted Worswick | Ted Worswick | DNA |
| 28.5.1966 | MCMRC Oulton Park [Sports] | 117 | Special | J. Hides | J. Hides | DNA |
| 30.5.1966 | Whitsun Goodwood [Marque] | 7 | Grantura Series III | Tommy Entwistle | T. Entwistle | DNA |
| 4.6.1966 | BARC Oulton Park [Marque+Special GT] | 79 | Grantura Series III | Tommy Entwistle | Tom Entwistle | DNF |
| 4.6.1966 | 8 Clubs Silverstone [Race B] | 93 | | D. Greenaway | D. Greenaway | DNA |
| 5.6.1966 | 1000 km Nürburgring | 65 | Grantura 1800 S | Wingfield / McHardy | A. K. McHardy | DNA |
| 18.6.1966 | BARC Silverstone [Marque] | 91 | Grantura Series III | Tommy Entwistle | T. Entwistle | DNA |
| 2.7.1966 | BARC Crystal Palace [Special GT/Marque] | 76 | Griffith | Gerry Marshall | | DNA |
| 2.7.1966 | BRSCC Oulton Park [GT] | 132 | Griffith | Ted Worswick | Ted Worswick | 13th |
| 2.7.1966 | BRSCC Oulton Park [S/GT] | 132 | Griffith | Ted Worswick | Ted Worswick | 9th |
| 9.7.1966 | MCMRC Oulton Park [GT] | 46 | | Max Clough | A. M. Clough | 13th |
| 9.7.1966 | MCMRC Oulton Park [GT] | 54 | Griffith | Ted Worswick | Ted Worswick | 6th |
| 23.7.1966 | BRSCC Oulton Park [GT] | 57 | Grantura | Ted Worswick | Ted Worswick | DNA |
| 23.7.1966 | BRSCC Oulton Park [S/GT] | 57 | Grantura | Ted Worswick | Ted Worswick | DNA |
| 24.7.1966 | SMRC Ingliston [Special GT+1.2] | 53 | | Ronnie Ballantine | J. R. Ballantine | DNA |
| 30.7.1966 | LCCC Oulton Park [GT] | 30 | Griffith | Ted Worswick | Ted Worswick | DNA |
| 14.8.1966 | SMRC Ingliston [S/Special GT+1.2] | 23 | | Ronnie Ballantine | J. R. Ballantine | DNA |
| 14.8.1966 | SMRC Ingliston [S/Special GT+1.2] | 27 | | T. J. Henderson | T. J. Henderson | DNA |
| 14.8.1966 | Benefactor Cup Croft | | Grantura Series III | Tommy Entwistle | | 6th |
| 20.8.1966 | BARC Oulton Park [Marque] | 54 | Grantura Series III | Tommy Entwistle | Tom Entwistle | 3rd |
| 28.8.1966 | Mid-Ohio [SR+AP+BP+CP+DP+EP] | 90 | Grantura | Chuck Seinkner | | DNA |
| 29.8.1966 | NSCC Silverstone [Marque] | 86 | Grantura | C. R. Stanger | C. R. Stanger | DNA |
| 29.8.1966 | NSCC Silverstone [Special GT] | 111 | Griffith | Maurice Gates | M. M. Gates | DNA |
| 29.8.1966 | NSCC Silverstone [Special GT] | 112 | Griffith | Doug Hardwick | C. R. Stanger | DNA |
| 4.9.1966 | SMRC Ingliston [S/Special GT+1.2] | 29 | Grantura | D. Walton | D. Walton | 10th |
| 4.9.1966 | SMRC Ingliston [S/Special GT+1.2] | 30 | | Ronnie Ballantine | J. R. Ballantyne | DNA |
| 10.9.1966 | PMC Silverstone [Marque] | 145 | Grantura | Carlton Roger Stranger | C. R. Stranger | DNA |
| 17.9.1966 | Gold Cup Oulton Park | 55 | Griffith | Gerry Marshall | Barnet Motor Co. Ltd. | 20th |
| 18.9.1966 | Bridgehampton [AP+BP+CP+DP] | 0 | Grantura Series III | Gerald Sagerman | Gerry Sagerman | DNA |
| 18.9.1966 | Bridgehampton [AP+BP+CP+DP] | 3 | Grantura Series III | Tom Outcault | Tom Outcault | DNA |
| 1.10.1966 | 8 Clubs Silverstone [GT1.6] | 179 | Grantura | C. R. Stanger | C. R. Stanger | 16th |
| 1.10.1966 | 8 Clubs Silverstone [GT+1.6] | 224 | Griffith | Gerry Marshall | Barnet Motor Co. Ltd. | DNA |
| 1.10.1966 | 8 Clubs Silverstone [GT+1.6] | 225 | Griffith | Maurice Gates | M. M. Gates | 12th |
| 8.10.1966 | BARC Silverstone [Marque] | 44 | Grantura Series III | | T. Entwistle | 3rd |
| 8.10.1966 | BARC Silverstone [Marque] | 45 | Grantura | D. Allanson | D. Allanson | DNA |
| 8.10.1966 | BARC Silverstone [Special GT] | 89 | Griffith | Maurice Gates | M. M. Gates | DNA |
| 8.10.1966 | BARC Silverstone [Special GT] | 93 | Grantura | D. Walton | D. Walton | DNA |
| 23.10.1966 | Trofeo Montjuich | 66 | Grantura 1800 S | José Cabré | Jaime Piera | DNS |
| 3.12.1966 | Nassau [Locals Heat 2] | 74N | Grantura | John Oakes | | 7th |
| 3.12.1966 | Nassau [Locals Heat 1] | 74N | Grantura | John Oakes | | 4th |
| 4.12.1966 | Bahamas Cup | 74N | Grantura | John Oakes | | 5th |