1946 | Gransden Lodge Trophy | Reg Parnell Racing | Maserati | 4CL | Maserati | 1 |
| Grand Prix d’Albi | Reg Parnell Racing | Maserati | 4CL | Maserati | 7 |
| Grand Prix des Nations | Reg Parnell Racing | Maserati | 4CL | Maserati | ab |
| Ulster Trophy | Reg Parnell Racing | Maserati | 4CL | Maserati | 2 |
| Gran Premio del Valentino | Reg Parnell Racing | ERA | A | ERA | ab |
| Circuito di Milano | Reg Parnell Racing | ERA | A | ERA | ab |
| Grand Prix du Salon | Reg Parnell Racing | ERA | B | ERA | f |
| Grand Prix de Penya Rhin | Reg Parnell Racing | Maserati | 4CL | Maserati | ab |
1947 | Grand Prix d’Hiver | Reg Parnell Racing | ERA | A | ERA | 1 |
| Grand Prix de Stockholm | Reg Parnell Racing | ERA | A | ERA | 1 |
| Jersey Road Race | Reg Parnell Racing | Maserati | 4CL | Maserati | 1 |
| Grand Prix de Marseille | Reg Parnell Racing | Maserati | 4CL | Maserati | ab |
| Grand Prix de Nimes | Reg Parnell Racing | Maserati | 4CL | Maserati | 3 |
| Grand Prix de Reims | Reg Parnell Racing | ERA | E | ERA | ab |
| Grand Prix de l’Albigeois | Reg Parnell Racing | Maserati | 4CL | Maserati | ab |
| Grand Prix de Nice | Reg Parnell Racing | Maserati | 4CL | Maserati | ab |
| Grand Prix de Nice | Reg Parnell Racing | ERA | A | ERA | 3 |
| Ulster Trophy | Reg Parnell Racing | ERA | E | ERA | ab |
| Grand Prix de l’ACF | Reg Parnell Racing | ERA | E | ERA | ab |
| Grand Prix de Lausanne | Reg Parnell Racing | Maserati | 4CLT | Maserati | ab |
1948 | Jersey Road Race | Reg Parnell Racing | Maserati | 4CL | Maserati | 3 |
| Grand Prix de Monaco | Reg Parnell Racing | ERA | E | ERA | ab |
| British Empire Trophy | Reg Parnell Racing | Maserati | 4CL | Maserati | ab |
| Grand Prix de Zandvoort | Scuderia Ambrosiana | Maserati | 4CLT | Maserati | 3 |
| Gran Premio d’Italia | Reg Parnell Racing | Maserati | 4CLT/48 | Maserati | 5 |
| Goodwood Trophy | Reg Parnell Racing | Maserati | 4CLT/48 | Maserati | 1 |
| British Grand Prix | Reg Parnell Racing | Maserati | 4CLT/48 | Maserati | ab |
| Grand Prix du Salon | Reg Parnell Racing | Maserati | 4CLT/48 | Maserati | 8 |
| Gran Premio di Monza | Reg Parnell Racing | Maserati | 4CLT/48 | Maserati | ab |
| Gran Premio de Penya Rhin | Reg Parnell Racing | Maserati | 4CLT/48 | Maserati | 2 |
1949 | Richmond Trophy | Reg Parnell Racing | Maserati | 4CLT/48 | Maserati | 1 |
| Jersey Road Race | Reg Parnell Racing | Maserati | 4CLT/48 | Maserati | ab |
| British Grand Prix | Reg Parnell Racing | Maserati | 4CLT/48 | Maserati | ab |
| British Empire Trophy | Reg Parnell Racing | Maserati | 4CLT/48 | Maserati | ab |
| Grand Prix de Belgique | Reg Parnell Racing | Maserati | 4CLT/48 | Maserati | ab |
| Grand Prix de Suisse | Reg Parnell Racing | Maserati | 4CLT/48 | Maserati | 8 |
| Grand Prix de l’Albigeois | Reg Parnell Racing | Maserati | 4CLT/48 | Maserati | ab |
| Grand Prix de France | Reg Parnell Racing | Maserati | 4CLT/48 | Maserati | ab |
| Grand Prix de Zandvoort | Reg Parnell Racing | Maserati | 4CLT/48 | Maserati | 6 |
| International Trophy | Reg Parnell Racing | Maserati | 4CLT/48 | Maserati | ab |
| Grand Prix de Lausanne | Reg Parnell Racing | Maserati | 4CLT/48 | Maserati | f |
| Gran Premio d’Italia | Reg Parnell Racing | Maserati | 4CLT/48 | Maserati | ab |
| Goodwood Trophy | Reg Parnell Racing | Maserati | 4CLT/48 | Maserati | 1 |
| Velka cena Ceskoslovenska | Reg Parnell Racing | Maserati | 4CLT/48 | Maserati | ab |
1950 | Richmond Trophy | Scuderia Ambrosiana | Maserati | 4CLT/48 | Maserati | 1 |
| Gran Premio di San Remo | Scuderia Ambrosiana | Maserati | 4CLT/48 | Maserati | ab |
| British Empire Trophy | Scuderia Ambrosiana | Maserati | 4CLT/48 | Maserati | 6 |
| Jersey Road Race | Scuderia Ambrosiana | Maserati | 4CLT/48 | Maserati | 2 |
| Grote Prijs van Nederland | Scuderia Ambrosiana | Maserati | 4CLT/48 | Maserati | ab |
| Grand Prix des Nations | Scuderia Ambrosiana | Maserati | 4CLT/48 | Maserati | ab |
| International Trophy | Scuderia Ambrosiana | Maserati | 4CLT/48 | Maserati | ab |
| Goodwood Trophy | BRM | BRM | P15 | BRM | 1 |
| Gran Premio de Penya Rhin | BRM | BRM | P15 | BRM | ab |
1951 | Richmond Trophy | Reg Parnell Racing | Maserati | 4CLT/48 | Maserati | ab |
| Grand Prix de San Remo | Reg Parnell Racing | Maserati | 4CLT/48 | Maserati | ab |
| International Trophy | GA Vandervell | Ferrari | 375 tw | Ferrari | 1 |
| Ulster trophy | Vandervell Products Ltd | Ferrari | 375 tw | Ferrari | 2 |
| Goodwood Trophy | GA Vandervell | Ferrari | 375 tw | Ferrari | 2 |
1952 | Daily Express International Trophy | Enrico Platé | Maserati | 4CLT/48 | Maserati | f |
| Grand Prix du Comminges | Archie H.M. Bryde | Cooper | T20 | Bristol | f |
| Scottish Daily Express National Trophy | BRM | BRM | P15 | BRM | 1 |
1953 | Glover Trophy | BRM | BRM | P15 | BRM | ab |
1954 | Lavant Cup | Scuderia Ambrosiana | Ferrari | 500/625 | Ferrari | 1 |
| International Trophy | Scuderia Ambrosiana | Ferrari | 500/625 | Ferrari | ab |
| BARC Formula 1 Race | Scuderia Ambrosiana | Ferrari | 500/625 | Ferrari | 1 |
| Crystal Palace Trophy | Scuderia Ambrosiana | Ferrari | 500/625 | Ferrari | 1 |
| August Cup | Scuderia Ambrosiana | Ferrari | 500/625 | Ferrari | 1 |
| International Gold Cup | Scuderia Ambrosiana | Ferrari | 500/625 | Ferrari | 2 |
| Redex trophy | Scuderia Ambrosiana | Ferrari | 500/625 | Ferrari | 1 |
| Goodwood Trophy | Scuderia Ambrosiana | Ferrari | 500/625 | Ferrari | ab |
| Daily Telegraph Trophy | Scuderia Ambrosiana | Ferrari | 500/625 | Ferrari | 14 |
1955 | International Trophy | Scuderia Ambrosiana | Ferrari | 500/625 | Ferrari | ab |
| Daily Telegraph Trophy | Connaught Engineering | Connaught | B | Alta | 6 |
| International Gold Cup | Connaught Engineering | Connaught | B | Alta | 4 |
1956 | Glover Trophy | RRC Walker Racing Team | Connaught | B | Alta | 5 |
| BARC Aintree 200 | RRC Walker Racing Team | Connaught | B | Alta | ab |
| International Trophy | RRC Walker Racing Team | Connaught | B | Alta | ab |