| 1995 · 1995 24 Hours of Le Mans | N/C** | 71 | LM-GT2 | Team Marcos | David Leslie · François MigaultDavid Leslie Chris Marsh François Migault | Marcos LM600 | Chevrolet LT5 6.2L V8 | 184 | Wikipedia contributors · CC BY-SA 4.0 |
| 1993 · 1993 24 Hours of Le Mans | DNF | 51 | Category 4 | TWR Jaguar Racing | Armin Hahne · Win Percy · David LeslieArmin Hahne Win Percy David Leslie | Jaguar XJ220C | Jaguar JRV-6 3.5L V6 twin turbo | 6 | Wikipedia contributors · CC BY-SA 4.0 |
| 1991 · 1991 24 Hours of Le Mans | DNF | 36 | Category 2 | Suntec Jaguar Tom Walkinshaw Racing | David Leslie · Mauro Martini · Jeff KrosnoffDavid Leslie Mauro Martini Jeff Krosnoff | Jaguar XJR-12LM | Jaguar HE 7.4L V12 | 183 | Wikipedia contributors · CC BY-SA 4.0 |
| 1990 · 1990 24 Hours of Le Mans | DNF | 1 | Gr.C1 | Silk Cut Jaguar Team Tom Walkinshaw Racing | Alain Ferté · David Leslie · Martin BrundleAlain Ferté David Leslie Martin Brundle | Jaguar XJR-12LM | Jaguar 7.0L V12 | 220 | Wikipedia contributors · CC BY-SA 4.0 |
| 1989 · 1989 24 Hours of Le Mans | DNF | 19 | Gr.C1 | Aston Martin Ecurie Ecosse | David Leslie · Ray Mallock · David SearsDavid Leslie Ray Mallock David Sears | Aston Martin AMR1 | Aston Martin RDP87 6.0L V8 | 153 | Wikipedia contributors · CC BY-SA 4.0 |
| 1989 · Coupe de Dijon, Dijon-Prenios | 17 | 18 | 4. C1 | Aston Martin | David Leslie · Brian Redman | Aston Martin AMR1 | — | 119 | WSPR historical record |
| 1989 · Brands Hatch Trophy | 4 | 18 | 4. C1 | Aston Martin | David Leslie · Brian Redman | Aston Martin AMR1 | — | 112 | WSPR historical record |
| 1989 · Int. ADAC Trophäe, Nürburgring | 8 | 18 | 8. C1 | Aston Martin | Brian Redman · David Leslie | Aston Martin AMR1 | — | 103 | WSPR historical record |
| 1989 · Wheatcroft Gold Cup, Donington | 6 | 19 | 6. C1 | Aston Martin | David Leslie · Michael Roe | Aston Martin AMR1 | — | 118 | WSPR historical record |
| 1989 · Coupes de Spa, Spa-Francorchamps | retired | 19 | C1 | Aston Martin | David Leslie · Michael Roe | Aston Martin AMR1 | — | 43 | WSPR historical record |
| 1989 · Trofeo Hermanos Rodriguez, Ciudad de Mexico, Mexico | 8 | 18 | 8. C1 | Aston Martin | David Leslie · Brian Redman | Aston Martin AMR1 | — | 107 | WSPR historical record |
| 1988 · 1988 24 Hours of Le Mans | 17 | 201 | IMSA GTP | Mazdaspeed | Yoshimi Katayama · David Leslie · Marc DuezYoshimi Katayama David Leslie Marc Duez | Mazda 767 | Mazda 13J-M 2.6L quad-rotary | 330 | Wikipedia contributors · CC BY-SA 4.0 |
| 1987 · 1987 24 Hours of Le Mans | 8 | 102 | Gr.C2 | Swiftair Ecurie Ecosse | David Leslie · Ray Mallock · Marc DuezDavid Leslie Ray Mallock Marc Duez | Ecosse C286 | Cosworth DFL 3.3 L V8 | 308 | Wikipedia contributors · CC BY-SA 4.0 |
| 1987 · Grand Premio Fortuna, Jarama | 11 | 101 | 2. C2 | Ecurie Ecosse | Ray Mallock · David Leslie | Ecosse C286 Ford | — | 99 | WSPR historical record |
| 1987 · Mount Fuji 1000 Kilometres | 14 | 102 | 2. C2 | Ecurie Ecosse | David Leslie · Ray Mallock | Ecosse C286 Ford | — | 203 | WSPR historical record |
| 1987 · 1000 km Jerez | 5 | 101 | 2. C2 | Ecurie Ecosse | Ray Mallock · David Leslie | Ecosse C286 Ford | — | 199 | WSPR historical record |
| 1987 · 1000 km Monza | 8 | 101 | 2. C2 | Ecurie Ecosse | Ray Mallock · David Leslie | Ecosse C286 Ford | — | 156 | WSPR historical record |
| 1987 · Autoglass 1000 Kilometres Silverstone | 6 | 102 | 1. C2 | Ecurie Ecosse | Ray Mallock · David Leslie | Ecosse C286 Ford | — | 191 | WSPR historical record |
| 1987 · 200 Meilen von Nürnberg - Int. ADAC-Norisring-Trophäe | 7 | 102 | 2. C2 | Ecurie Ecosse | Ray Mallock · David Leslie | Ecosse C286 Ford | — | 143 | WSPR historical record |
| 1987 · Shell Gemini 1000 Kilometres Brands Hatch | 7 | 102 | 1. C2 | Ecurie Ecosse | Ray Mallock · David Leslie | Ecosse C286 Ford | — | 221 | WSPR historical record |
| 1987 · Int. ADAC-1000-km-Rennen, Nürburgring | retired | 102 | C2 | Ecurie Ecosse | Ray Mallock · David Leslie | Ecosse C286 Ford | — | 194 | WSPR historical record |
| 1987 · Kouros 1000 km Spa | 13 | 102 | 3. C2 | Ecurie Ecosse | Ray Mallock · David Leslie | Ecosse C286 Ford | — | 128 | WSPR historical record |
| 1986 · 1986 24 Hours of Le Mans | DSQ | 79 | Gr.C2 | Ecurie Ecosse | David Leslie · Mike Wilds · Ray MallockDavid Leslie Mike Wilds Ray Mallock | Ecosse C286 | Austin-Rover V64V 3.0L V6 | 181 | Wikipedia contributors · CC BY-SA 4.0 |
| 1986 · Kouros' 1000 km Silverstone | retired | 21 | GTP | RC Racing | Franz Konrad · David Leslie · Richard Cleare | March 85G Porsche | — | 40 | WSPR historical record |
| 1986 · Shell Gemini 1000 km Brands Hatch | 7 | 79 | 1. C2 | Ecurie Ecosse | Ray Mallock · David Leslie | Ecosse C286 Rover | — | 221 | WSPR historical record |
| 1986 · ADAC Kouros 1000 km Nürburgring | retired | 115 | GTP | RC Racing | David Leslie · Richard Cleare | March 85G Porsche | — | 11 | WSPR historical record |
| 1986 · Kouros 1000 Kilometres Spa | retired | 21 | GTP | Richard Cleare Racing | David Leslie · Richard Cleare | March 85G Porsche | — | 40 | WSPR historical record |
| 1985 · 1985 24 Hours of Le Mans | DNF | 79 | Gr.C2 | Ecurie Ecosse | David Leslie · Mike Wilds · Ray MallockDavid Leslie Mike Wilds Ray Mallock | Ecosse C285 | Cosworth DFV 3.0L V8 | 45 | Wikipedia contributors · CC BY-SA 4.0 |
| 1985 · Trofeo Filippo Caracciolo, Monza | 10 | 79 | 2. C2 | Ecurie Ecosse | Ray Mallock · Mike Wilds · David Leslie | Ecosse C285 Ford | — | 124 | WSPR historical record |
| 1985 · Duschfrish ADAC 1000 Kilometres, Hockenheim | 8 | 79 | C2 | Ecurie Ecosse | Ray Mallock · David Leslie · Mike Wilds | Ecosse C285 Ford | — | 134 | WSPR historical record |
| 1985 · 1000 km Spa | 14 | 79 | 4. C2 | Ecurie Ecosse | Ray Mallock · Mike Wilds · David Leslie | Ecosse C285 Ford | — | 99 | WSPR historical record |
| 1985 · 1000 km Brands Hatch | retired | 16 | | RC Racing | David Leslie · Richard Cleare | Kremer-Porsche CK5 | — | 59 | WSPR historical record |
| 1984 · 1984 24 Hours of Le Mans | DNF | 77 | Gr.C2 | Ecurie Ecosse | Mike Wilds · David LeslieMike Wilds David Leslie David Duffield | Ecosse C284 | Cosworth DFV 3.0L V8 | 36 | Wikipedia contributors · CC BY-SA 4.0 |
| 1984 · British Aerospace 1000 Kilometres, Brands Hatch | retired | 16 | C1 | Richard Cleare Racing | Richard Cleare · John Cooper · David Leslie | Kremer-Porsche CK5 | — | 46 | WSPR historical record |