| 1987 · Grand Premio Fortuna, Jarama | 13 | 115 | 4. C2 | ADA Engineering | Ian Harrower · Mike Wilds | Gebhardt JC843 Ford | — | 98 | WSPR historical record |
| 1987 · 1000 km Jerez | retired | 115 | C2 | ADA Engineering | Mike Wilds · Ian Harrower | Gebhardt JC843 Ford | — | 121 | WSPR historical record |
| 1987 · Shell Gemini 1000 Kilometres Brands Hatch | retired | 115 | C2 | ADA Engineering | Tiff Needell · Ian Harrower | ADA 02 Ford | — | 90 | WSPR historical record |
| 1986 · Coppa Kouros, Monza | retired | 75 | C2 | ADA Engineering | Evan Clements · Ian Harrower | Gebhardt JC843 Ford | — | 55 | WSPR historical record |
| 1986 · Kouros' 1000 km Silverstone | 16 | 75 | 3. C2 | ADA Engineering | Evan Clements · Ian Harrower | Gebhardt JC843 Ford | — | 185 | WSPR historical record |
| 1986 · Shell Gemini 1000 km Brands Hatch | retired | 75 | C2 | ADA Engineering | Evan Clements · Ian Harrower | Gebhardt JC843 Ford | — | 28 | WSPR historical record |
| 1986 · Trofeo Silk Cut, Jerez | 6 | 75 | 2. C2 | ADA Engineering | Evan Clements · Ian Harrower | Gebhardt JC843 Ford | — | 78 | WSPR historical record |
| 1986 · ADAC Kouros 1000 km Nürburgring | 8 | 75 | 4. C2 | ADA Engineering | Evan Clements · Ian Harrower | Gebhardt JC843 Ford | — | 107 | WSPR historical record |
| 1986 · Kouros 1000 Kilometres Spa | 15 | 75 | 3. C2 | A.D.A. Engineering | Evan Clements · Ian Harrower | Gebhardt JC843 Ford | — | 123 | WSPR historical record |
| 1986 · Mount Fuji 1000 Kilometres, Fuji Speedway | 27 | 75 | 4. C2 | ADA Engineering | Ian Harrower · Evan Clements | Gebhardt JC843 Ford | — | 200 | WSPR historical record |
| 1985 · Malaysia 800 Selangor, Shah Alam | 6 | 75 | 1. C2 | ADA Engineering | Richard Piper · Ian Harrower · Evan Clements | Gebhardt JC843 Ford | — | 191 | WSPR historical record |
| 1985 · Trofeo Filippo Caracciolo, Monza | 15 | 75 | 5. C2 | ADA Engineering | Ian Harrower · Richard Jones | Gebhardt JC843 Ford | — | 110 | WSPR historical record |
| 1985 · Silverstone 1000 Kilometres | retired | 75 | C2 | ADA Engineering | Ian Harrower · Steve Earle · Mark Galvin | Gebhardt JC843 Ford | — | 135 | WSPR historical record |
| 1985 · 1000 km Brands Hatch | 10 | 75 | 4. C2 | ADA Engineering | Wayne Taylor · Ian Harrower · Nick Adams | Gebhardt JC843 Ford | — | 192 | WSPR historical record |
| 1984 · Sandown Park 1000 Kilometres | retired | 72 | C2 | ADA Engineering | Ian Harrower · Neville Crichton · Bruce Davidson | Gebhardt JC843 Ford | — | 64 | WSPR historical record |
| 1984 · Grand Prix International 1000 Kilometres, Silverstone | 18 | 79 | 3. C2 | ADA Engineering | Ian Harrower · Tom Dodd-Noble · Ray Taft | ADA 01 Ford | — | 173 | WSPR historical record |
| 1983 · Grand Prix International 1000 Kilometres, Silverstone | 12 | 55 | 9. C | François Duret | Mike Wilds · François Duret · Ian Harrower | De Cadenet Lola Ford | — | 167 | WSPR historical record |
| 1982 · The Pace Petroleum 6 Hours, Silverstone | entry_only | 65 | Gr.5 | ADA Engineering | Ian Harrower · William Wykeham | Triumph TR7 | — | | WSPR historical record |
| 1982 · Trophee Diners Club 1000 kilometres, Spa-Francorchamps | entry_only | 39 | C | Dorset Racing Associates | Pascal Witmeur · François Duret · Ian Harrower | De Cadenet Lola LM Ford | — | | WSPR historical record |
| 1981 · Flying Tigers 1000, Brands Hatch | retired | 21 | Gr.5 | ADA Engineering | William Wykeham · Ian Harrower · Ray Mallock | Triumph TR8 Turbo | — | 12 | WSPR historical record |
| 1981 · Silverstone 6 Hours | did_not_start | 29 | Gr.5 | ADA Engineering | Ian Harrower · John Brindley | Triumph TR8 Turbo | — | | WSPR historical record |
| 1980 · Silverstone 1000 | did_not_start | 14 | Gr.5 | Jan Odor | John Sheldon · Ian Harrower | Triumph TR7 | — | | WSPR historical record |
| 1979 · Rivet Supply 6 Hours, Silverstone | entry_only | 41 | S2.0 | Dorset Racing | Tony Birchenhough · Ian Harrower · Brian Joscelyne | Lola T297 Ford | — | | WSPR historical record |
| 1977 · 500 kms de I'ACF, Dijon-Prenois | did_not_start | 27 | S2.0 | Dorset Racing Associates | Guy Edwards · Ian Harrower · Chris Craft | Lola T294 Ford | — | | WSPR historical record |
| 1977 · 500 km Paul Ricard, Le Castellet | entry_only | 12 | S2.0 | — | Martin Birrane · Ian Harrower | Lola T294 Ford | — | | WSPR historical record |
| 1977 · 250 km Imola | entry_only | 39 | S2.0 | Dorset Racing | Martin Birrane · Ian Harrower | Lola T294 Ford | — | | WSPR historical record |
| 1976 · ADAC-Goodyear-Pokal, 300 Kilometres Nürburgring | 14 | 37 | 4. S2.0 | Dorset Racing Associates | Richard Down · Ian Harrower | Lola T294 Fo | — | 10 | WSPR historical record |
| 1976 · Trofeo Filippo Caracciolo, Monza 4 Hours | 9 | 49 | 5. S2.0 | Dorset Racing | Simon Phillips · Ian Harrower | Lola T294 Ford | — | 124 | WSPR historical record |
| 1976 · 500 km des ACF Dijon-Prenois | 15 | 66 | 8. S2.0 | Dorset Racing Association | Ian Harrower · Simon Phillips · DNS - Herbert Müller | Lola T294 Ford | — | 120 | WSPR historical record |
| 1975 · Trofeo F. Carraciolo, Monza | 11 | 36 | 4. S2.0 | Dorset Racing | Claude Crespin · Brian Joscelyne · Ian Harrower | Lola T294 Ford | — | 148 | WSPR historical record |
| 1975 · Coppa Florio, Enna-Pergusa | 8 | 14 | 1. S2.0 | Dorset Racing Associates | Claude Crespin · Ian Harrower | Lola T294 Ford | — | 165 | WSPR historical record |
| 1975 · 1000 km Zeltweg | 10 | 20 | 5. S2.0 | Tony Charnell | Tony Charnell · Andrew Jeffrey · Ian Harrower | Chevron B23 Ford | — | 84 | WSPR historical record |
| 1974 · 1000 km Monza | did_not_qualify | 32 | S2.0 | Ian Harrower | Ian Harrower · Nigel Clarkson | Chevron B21 Ford | — | | WSPR historical record |
| 1974 · 1000 km Spa | retired | 27 | S2.0 | James Bell | Ian Harrower · Nigel Clarkson | Chevron B19 Ford | — | | WSPR historical record |
| 1974 · 1000-km-Rennen Nürburgring | 31 | 32 | 6. S2.0 | James Bell | Ian Harrower · Ian Bracey | Chevron B19 Ford | — | 24 | WSPR historical record |
| 1974 · 1000 km Zeltweg, Österreichring | 8 | 25 | 2. S2.0 | James Bell | Ian Harrower · Richard Jones | Chevron B23 Ford | — | 147 | WSPR historical record |
| 1974 · Brands Hatch BA 1000 Kilometres | 12 | 30 | 5. S2.0 | James Bell | Ian Harrower · Ian Bracey · Ian Taylor | Chevron B21 Ford | — | 198 | WSPR historical record |
| 1973 · Monza 1000 Kilometres | retired | 36 | S2.0 | Ian Harrower | Ian Harrower · James Bell | Chevron B21 Ford | — | 83 | WSPR historical record |
| 1973 · Spa 1000 Kilometres | retired | 30 | S2.0 | Ian Harrower | Ian Harrower · James Bell | Chevron B23 Ford | — | | WSPR historical record |
| 1973 · ADAC 1000 Kilometres, Nürburgring | retired | 39 | S2.0 | Ian Harrower | Ian Harrower · James Bell | Chevron B23 Ford | — | | WSPR historical record |
| 1973 · Austrian 1000 Kilometres, Österreichring, Zeltweg | entry_only | 23 | S2.0 | James Bell | Ian Harrower · James Bell | Chevron B23 Ford | — | | WSPR historical record |
| 1972 · ADAC 1000 Kilometres, Nürburgring | did_not_qualify | 29 | S2.0 | Ian Harrower | Ian Harrower · Mark Sharpley | Chevron B8 BMW | — | | WSPR historical record |