| 4.6.1966 | 8 Clubs Silverstone [Race B] | 5 | Sprite | M. J. Prior | M. J. Prior | DNA |
| 4.6.1966 | 8 Clubs Silverstone [Handicap A] | 5 | Sprite | M. J. Prior | M. J. Prior | DNA |
| 4.6.1966 | 8 Clubs Silverstone [Race A] | 33 | 3000 | W. H. Ramsden | W. H. Ramsden | DNA |
| 4.6.1966 | 8 Clubs Silverstone [Race A] | 36 | 3000 | John Gott | J. Gott | DNA |
| 4.6.1966 | 8 Clubs Silverstone [Race B] | 46 | 3000 | J. Wolchover | J. Wolchover | DNA |
| 4.6.1966 | 8 Clubs Silverstone [Handicap A] | 53 | Sprite | I. Griffiths | I. Griffiths | DNA |
| 4.6.1966 | 8 Clubs Silverstone [Handicap A] | 55 | Sprite | R. C. Dollar | R. C. Dollar | DNA |
| 4.6.1966 | 8 Clubs Silverstone [Race B] | 55 | Sprite | R. C. Dollar | R. C. Dollar | DNA |
| 4.6.1966 | BARC Oulton Park [Marque+Special GT] | 63 | 3000 Mk II | Royston Hill | Royston Hill | 9th |
| 4.6.1966 | BARC Oulton Park [Handicap] | 63 | 3000 Mk II | Royston Hill | Royston Hill | 7th |
| 4.6.1966 | BARC Oulton Park [Handicap] | 64 | 3000 Mk III | Ted Worswick | Ted Worswick | 6th |
| 4.6.1966 | BARC Oulton Park [Marque+Special GT] | 64 | 3000 Mk III | Ted Worswick | Ted Worswick | 5th |
| 4.6.1966 | BARC Oulton Park [Marque+Special GT] | 65 | 3000 | D. Taylor | D. Taylor | DNS |
| 4.6.1966 | BARC Oulton Park [Marque+Special GT] | 66 | 3000 | G. Rawlinson | G. Rawlinson | 11th |
| 4.6.1966 | 8 Clubs Silverstone [Race B] | 89 | Sprite | Peter Mitchell | P. Mitchell | DNA |
| 4.6.1966 | 8 Clubs Silverstone [Handicap B] | 89 | Sprite | Peter Mitchell | P. Mitchell | DNA |
| 4.6.1966 | BARC Oulton Park [Marque+Special GT] | 93 | Speedwell Sprite GT | Terry Watts | Terry Watts | DNS |
| 4.6.1966 | BARC Oulton Park [Marque+Special GT] | 94 | Sprite | David MacRae | David MacRae | DNA |
| 4.6.1966 | BARC Oulton Park [Marque+Special GT] | 98 | Sprite | John Maun | J. D. Maun | DNS |
| 4.6.1966 | BARC Oulton Park [Marque+Special GT] | 100 | Sprite | David Hall | J. D. Maun | DNA |
| 4.6.1966 | Player's Mosport [Production] | | 3000 | Ward | | 9th |
| 4.6.1966 | Player's Mosport [Production] | | Sprite | Wilf Becker | | 12th |
| 5.6.1966 | 1000 km Nürburgring | 34 | Sprite | Baker / Moore | Richard Groves | 20th |
| 5.6.1966 | 1000 km Nürburgring | 35 | Sprite | Garton / Poole | Richard Groves | 22nd |
| 5.6.1966 | 1000 km Nürburgring | 123 | Speedwell Sprite GT | White / Grant | Grahame D. White | 32nd |
| 5.6.1966 | 1000 km Nürburgring | 124 | Sprite | Cooper / Dunnell | John Jeffcoat | DNQ |
| 5.6.1966 | Hockenheim | | Speedwell Sprite GT 2A | Walter Helfert | | ?th |
| 5.6.1966 | Hockenheim | | | K. H. Reugels | | DNF |
| 5.6.1966 | Bulawayo 100 | | Sprite | R. Croucamp | | 4th |
| 12.6.1966 | SCCA Mid-America [CM+DM+EM+FM+GM+AP+BP+CP+DP+EP] | | 100-6 | John Buck | | 3rd |
| 12.6.1966 | Hockenheim [GT/S] | | Sprite | K.-H. Rengels | | ?th |
| 12.6.1966 | SCCA Regional Metropolitan Stadium [DP+EP] | | 100-6 | Bill Timm | Bill Timm | ?th |
| 18.6.1966 | BARC Silverstone [Marque] | 82 | 3000 | Stewart Hands | G. J. Bristow | DNA |
| 18.6.1966 | BARC Silverstone [Marque] | 83 | 3000 Mk II | Royston Hill | R. Hill | DNA |
| 18.6.1966 | BARC Silverstone [Special GT+1.6/GT1.15] | 83 | 3000 Mk II | Royston Hill | R. Hill | raced |
| 18.6.1966 | BARC Silverstone [Marque] | 84 | 3000 Mk III | Ted Worswick | E. A. Worswick | DNA |
| 18.6.1966 | BARC Silverstone [Handicap] | 84 | 3000 Mk III | Ted Worswick | E. A. Worswick | DNA |
| 18.6.1966 | BARC Silverstone [Marque] | 96 | Sprite | Alec Poole | A. K. Poole | DNA |
| 18.6.1966 | BARC Silverstone [Marque] | 98 | Sprite | Peter Mitchell | P. Mitchell | DNA |
| 18.6.1966 | BARC Silverstone [Handicap] | 98 | Sprite | Peter Mitchell | P. Mitchell | DNA |
| 19.6.1966 | 24 h Le Mans | 48 | Sprite | Baker / Rhodes | Donald Healey Motor Co. Ltd. | DNF |
| 19.6.1966 | 24 h Le Mans | 49 | Sprite | Hopkirk / Hedges | Donald Healey Motor Co. Ltd. | DNF |
| 19.6.1966 | 24 h Le Mans | 50 | 3000 Mk III | Worswick / Minshaw | Ted Worswick | DNA |
| 19.6.1966 | DARM Mainz-Finthen [S1.3] | | Speedwell Sprite GT 2A | Walter Helfert | | 10th |
| 19.6.1966 | DARM Mainz-Finthen [S1.3] | | Sprite | Hans-Jörg Mellen | | 9th |
| 25.6.1966 | Watkins Glen [Production] | 1 | Sprite | Gary Kuhns | Gary L. Kuhns | DNA |
| 25.6.1966 | Watkins Glen [Production] | 7 | Sprite | Thomas Hillyer | Thomas M. Hillyer | DNA |
| 25.6.1966 | Watkins Glen [Production] | 17 | Sprite Mk I | Conrad Voit | Conrad Voit | DNA |
| 25.6.1966 | Watkins Glen [Production] | 53 | Sprite | Tommy Tomlinson | Tommy Tomlinson | DNA |
| 25.6.1966 | Watkins Glen [Production] | 77 | 3000 | Olgerts Sniedze | Olgerts P. Sniedze | DNA |
| 25.6.1966 | Watkins Glen [Production] | 95 | Sprite | Ken Phillips | Kenneth F. Phillips | DNA |
| 25.6.1966 | Watkins Glen [Production] | 97 | Sprite | Easton Fegley | Easton Fegley | DNA |
| 2.7.1966 | BRSCC Oulton Park [S/GT] | 1 | Speedwell Sprite GT | Terry Watts | Terry Watts | 16th |
| 2.7.1966 | BRSCC Oulton Park [S/GT] | 9 | Sprite | David MacRae | David MacRae | DNF |
| 2.7.1966 | BRSCC Oulton Park [GT] | 9 | Sprite | Garry Wilson | Garry Wilson | 19th |
| 2.7.1966 | BRSCC Oulton Park [GT] | 14 | Sprite | | | DNA |
| 2.7.1966 | BRSCC Oulton Park [S/GT] | 14 | Sprite | | | DNA |
| 2.7.1966 | BAC Regionals Harewood Acres [Challenge Cup] | 50 | 3000 | Stan Ward | Halton Auto Body | DNA |
| 2.7.1966 | BRSCC Oulton Park [GT] | 111 | Sprite | John Willetts | C. T. Duckitt | 14th |
| 3.7.1966 | SCCA National Greenwood [CP+DP+EP] | 9 | 100-6 | Bill Timm | | 11th |
| 3.7.1966 | Montes Claros | 34 | 100 S | Pinto Bastos | | raced |
| 3.7.1966 | SCCA National Greenwood [CP+DP+EP] | 71 | 100-6 | James Hinson | | DNA |
| 3.7.1966 | SCCA National Greenwood [CP+DP+EP] | 76 | 100 | Leonard Janke | | 13th |
| 3.7.1966 | SCCA National Greenwood [CP+DP+EP] | | 3000 | John Wilson | | 8th |
| 4.7.1966 | SCCA National Galveston [CP+DP+EP] | | | Bert Muller | | 3rd |
| 4.7.1966 | SCCA National Galveston [CP+DP+EP] | | | | | raced |
| 9.7.1966 | MCMRC Oulton Park [GT] | 31 | Sprite Mk II | Chris Swindells | Christopher Swindells | DNA |
| 9.7.1966 | MCMRC Oulton Park [GT] | 35 | Sprite | Alec Poole | Speed Sport Conversions | 4th |
| 9.7.1966 | MCMRC Oulton Park [GT] | 54 | 3000 Mk III | Ted Worswick | Ted Worswick | DNA |
| 10.7.1966 | SCCA Regional Cotati [AP+BP+CP+DP] | 18 | 3000 | William Maier | | DNA |
| 10.7.1966 | SCCA Regional Cotati [AP+BP+CP+DP] | 81 | | Frank Schultheis | | DNA |
| 17.7.1966 | GP Mugello | 64 | Speedwell Sprite GT | White / Hunter | | NC |
| 17.7.1966 | GP Mugello | 94 | 3000 | Gragnoli / Polli | | NC |
| 17.7.1966 | GP Mugello | 171 | Sprite | Baker / Moore | | 45th |
| 17.7.1966 | GP Mugello | 181 | Sebring Sprite | Wheeler / Davidson | | DNF |
| 23.7.1966 | SCCA Regional Connellsville [SR+Production] | 5 | Sprite | Dick Blaugher | | DNA |
| 23.7.1966 | SCCA Regional Connellsville [SR+Production] | 9 | Sprite | Brian Patrick | | DNA |
| 23.7.1966 | BRSCC Oulton Park [S/GT] | 37 | Sprite Mk II | Chris Swindells | Chris Swindells | DNA |
| 23.7.1966 | BRSCC Oulton Park [GT] | 37 | Sprite Mk II | Chris Swindells | Chris Swindells | DNA |
| 23.7.1966 | BRSCC Oulton Park [S/GT] | 38 | Sprite | David MacRae | D. MacRae | 21st |
| 23.7.1966 | BRSCC Oulton Park [GT] | 38 | Sprite | Garry Wilson | D. MacRae | 16th |
| 23.7.1966 | SCCA Regional Connellsville [SR+Production] | 52 | 3000 | Bill Jansheski | | DNA |
| 23.7.1966 | BRSCC Oulton Park [GT] | 57 | 3000 Mk III | Ted Worswick | Ted Worswick | 10th |
| 23.7.1966 | BRSCC Oulton Park [S/GT] | 57 | 3000 Mk III | Ted Worswick | Ted Worswick | DNS |
| 23.7.1966 | SCCA Regional Connellsville [SR+Production] | 93 | 100-4 | Diane Wheeler | | DNA |
| 23.7.1966 | BRSCC Oulton Park [GT] | 126 | Speedwell Sprite GT | Terry Watts | Terry Watts | 15th |
| 23.7.1966 | BRSCC Oulton Park [GT] | 128 | Sprite | John Willetts | C. T. Duckitt | 11th |
| 24.7.1966 | SCCA National Connellsville [DP] | 23 | 3000 | James Brown | | DNA |
| 24.7.1966 | SMRC Ingliston [Special GT1.2] | 40 | Sprite | Donald Carmichael | D. D. Carmichael | 8th |
| 24.7.1966 | DARM Hockenheim [GT/SP1.6] | | Speedwell Sprite GT 2A | Walter Helfert | | 12th |
| 30.7.1966 | LCCC Oulton Park [GT] | 5 | Sprite Mk II | Chris Swindells | Christopher Swindells | DNA |
| 30.7.1966 | LCCC Oulton Park [GT] | 11 | Sprite | John Willetts | C. T. Duckitt | 7th |
| 30.7.1966 | LCCC Oulton Park [GT] | 12 | Sprite | David MacRae | D. I. MacRae | 12th |
| 30.7.1966 | LCCC Oulton Park [S/GT] | 12 | Sprite | Garry Wilson | D. I. MacRae | DNS |
| 30.7.1966 | LCCC Oulton Park [GT] | 30 | 3000 Mk III | Ted Worswick | Ted Worswick | 8th |
| 30.7.1966 | LCCC Oulton Park [GT] | 140 | Speedwell Sprite GT | Terry Watts | Terry Watts | 13th |
| 13.8.1966 | 750 MC Oulton Park [Formula Libre] | 201 | Sprite | John Lings | John Lings | DNS |
| 14.8.1966 | GP Hockenheim | 10 | Sebring Sprite | John Moore | Richard Groves | 11th |
| 14.8.1966 | ADAC Zandvoort | | Sprite | K. H. Reugels | | DNF |
| 14.8.1966 | ADAC Zandvoort | | Sprite | Hans-Jörg Mellen | | DNF |