| 16.1.1966 | SCCA Regional Corpus Christi [Main] | | #30/L/8 | Leroy Melcher | | DNF |
| 8.4.1966 | Scott-Brown Memorial Snetterton | 11 | #30/S2/2 | John Dean | John Dean Racing | DNA |
| 8.4.1966 | Scott-Brown Memorial Snetterton | 12 | #30/S2/8 | John Berry | Thomas Motors Ltd. | DNS |
| 8.4.1966 | Scott-Brown Memorial Snetterton | 14 | | Peter Sadler | Peter Sadler | DNA |
| 8.4.1966 | Scott-Brown Memorial Snetterton | 15 | #30/L/14 | John Nicholson | Farnborough Racing Enterprise | DNF |
| 11.4.1966 | BRSCC Mallory Park [Formula Libre] | 4 | | Peter Sadler | P. Sadler | DNA |
| 11.4.1966 | BRSCC Mallory Park [SR] | 4 | | Peter Sadler | P. Sadler | raced |
| 11.4.1966 | BRSCC Mallory Park [Formula Libre] | 5 | #30/S2/8 | John Berry | J. Berry | DNA |
| 11.4.1966 | BRSCC Mallory Park [SR] | 5 | #30/S2/8 | John Berry | J. Berry | raced |
| 17.4.1966 | SCCA National Stuttgart [Main] | | #30/L/8 | Homer Rader | | DNA |
| 24.4.1966 | USRRC Las Vegas | 2 | #30/L/2 | Bob Challman | Ecurie Shirlee | DNA |
| 30.4.1966 | Tourist Trophy | 10 | #30/S2/5 | Brian Muir | Race Proved by Willment | DNS |
| 30.4.1966 | Tourist Trophy | 56 | | Peter Sadler | Peter Sadler | 10th |
| 7.5.1966 | BARC Oulton Park [Sports/Clubman] | 1 | #30/S2/8 | John Berry | Thomas Motors (Blackpool) Ltd. | 1st |
| 7.5.1966 | BARC Oulton Park [Formula Libre] | 1 | #30/S2/8 | John Berry | Thomas Motors (Blackpool) Ltd. | 3rd |
| 8.5.1966 | USRRC Laguna Seca | 21 | #30/L/2 | Bob Challman | | 11th |
| 14.5.1966 | Silverstone International | 17 | #30/S2/5 | Brian Muir | Race Proved by Willment | 14th |
| 14.5.1966 | Silverstone International | 18 | #30/L/14 | John Nicholson | Farnborough Racing Enterprises | DNS |
| 14.5.1966 | Silverstone International | 19 | #30/S2/2 | John Dean | J. W. Dean | DNF |
| 14.5.1966 | Silverstone International | 20 | #30/S2/8 | John Berry | Thomas Motors | DNF |
| 29.5.1966 | Grovewood Trophy Mallory Park | 8 | #30/S2/5 | Brian Muir | "Race Proved by Willment" | 9th |
| 29.5.1966 | Grovewood Trophy Mallory Park | 9 | #30/S2/2 | John Dean | John Dean Racing | DNA |
| 29.5.1966 | Grovewood Trophy Mallory Park | 11 | #30/S2/8 | John Berry | Thomas Motors (Blackpool) Ltd. | 6th |
| 18.6.1966 | BARC Silverstone [Handicap] | 120 | #30/S2/8 | John Berry | J. R. F. Berry | DNA |
| 18.6.1966 | BARC Silverstone [Sports] | 120 | #30/S2/8 | John Berry | J. R. F. Berry | DNA |
| 2.7.1966 | BRSCC Oulton Park [SR/R] | 54 | | Peter Sadler | Peter Sadler | 6th |
| 2.7.1966 | BRSCC Oulton Park [Formula Libre] | 54 | | Peter Sadler | Peter Sadler | 11th |
| 2.7.1966 | BRSCC Oulton Park [SR/R] | 55 | #30/S2/8 | John Berry | John Berry | 7th |
| 2.7.1966 | BRSCC Oulton Park [Formula Libre] | 55 | #30/S2/8 | John Berry | John Berry | 5th |
| 9.7.1966 | Martini Trophy Silverstone | 18 | #30/S2/5 | Brian Muir | Race Proved by Willment | raced |
| 9.7.1966 | Martini Trophy Silverstone | 19 | #30/L/14 | John Nicholson | Farnborough Racing Enterprise | DNA |
| 9.7.1966 | Martini Trophy Silverstone | 20 | | Peter Sadler | Peter Sadler | DNA |
| 9.7.1966 | Martini Trophy Silverstone | 39 | #30/L/11 | Gerry Ashmore | Alan Eccles | raced |
| 9.7.1966 | Martini Trophy Silverstone | 43 | #30/S2/2 | John Dean | John Dean Racing | DNA |
| 17.7.1966 | DARM Norisring [SP] | 1 | #30/S2/5 | Brian Muir | Willment | ?th |
| 17.7.1966 | DARM Norisring [SP] | 4 | | | | DNA |
| 30.7.1966 | Snetterton | | #30/S2/8 | John Berry | | 3rd |
| 13.8.1966 | National Harewood Acres | | #30/L/4 | Craig Hill | | 1st |
| 14.8.1966 | Wills Trophy Croft | 16 | #30/S2/5 | Brian Muir | Race Proved by Willment | DNF |
| 14.8.1966 | Wills Trophy Croft | 17 | #30/S2/2 | John Dean | John Dean Racing | DNS |
| 14.8.1966 | Wills Trophy Croft | 38 | #30/S2/8 | Ben Moore | B. Moore | DNF |
| 20.8.1966 | H&DLLC Castle Combe [Formula Libre] | 4 | #30/S2/8 | John Berry | Thomas Motors (Blackpool) | DNA |
| 20.8.1966 | H&DLLC Castle Combe [Sports] | 4 | #30/S2/8 | John Berry | Thomas Motors (Blackpool) | DNA |
| 20.8.1966 | H&DLLC Castle Combe [Sports] | 7 | | D. W. Clarke | D. W. Clarke | DNA |
| 29.8.1966 | Guards Trophy Brands Hatch | 15 | #30/S2/8 | John Berry | Thomas Motors Blackpool | 13th |
| 29.8.1966 | Guards Trophy Brands Hatch | 16 | #30/S2/5 | Brian Muir | "Race Proved by Willment" | DNF |
| 4.9.1966 | 500 mile Road America | 1 | #30/L/12 | Shaw / Dagiel | Robert Shaw | DNF |
| 4.9.1966 | 500 mile Road America | 86 | #30/L/8 | Bill Kirtley | Bill Kirtley | DNA |
| 2.10.1966 | Guards Trophy Brands Hatch [S+2.5/GT+2.5] | | #30/S2/5 | Brian Muir | | 1st |
| 9.10.1966 | NSCC Mallory Park [SR] | 119 | #30/S2/5 | Brian Muir | Race Proved by Willment | raced |