Year | 1000 cc | 750 cc | 500 cc | 350 cc | 250 cc | 175 cc | 125 cc |
1924 | | | Guido Mentasti (Moto Guzzi) | Jimmie Simpson (AJS) | Maurice van Geert (Rush/Blackburne) | | |
1925 | | | Mario Revelli (GR/JAP) | Tazio Nuvolari (Bianchi) | Jock Porter (New Gerrard) | Mario Vaga (Maffeis/Blackburne) | |
1926 | | | Jimmie Simpson (AJS) | Frank Longman (AJS) | Jock Porter (New Gerrard) | René Milhoux (Ready/Blackburne) | |
1927 | Josef Giggenbach (Bayerland/JAP) | Josef Stelzer (BMW) | Graham Walker (Sunbeam) | Jimmie Simpson (AJS) | Cecil Ashby (OK-Supreme) | Willy Henkelmann (DKW) | |
1928 | | | Wal Handley (Motosacoche) | Wal Handley (Motosacoche) | Cecil Ashby (OK-Supreme) | Alfredo Panella (Ladetto/Blatto) | Paul Lehmann (Moser) |
1929 | | | Tim Hunt (Norton) | Leo Davenport (AJS) | Frank Longman (OK-Supreme) | Josef Klein (DKW) | |
1930 | | | Henry Tyrell-Smith (Rudge) | Ernie Nott (Rudge) | Syd Crabtree (Excelsior) | Yvan Goor (DKW) | |
1931 | | | Tim Hunt (Norton) | Ernie Nott (Rudge) | Graham Walker (Rudge) | Eric Fernihough (Excelsior) | |
1932 | | | Piero Taruffi (Norton) | Louis Jeannin (Jonghi) | Riccardo Brusi (Moto Guzzi) | Carlo Baschieri (Benelli) | |
1933 | | | Gunnar Kalén (Husqvarna) | Jimmie Simpson (Norton) | Charlie Dodson (New Imperial) | | |
1934 | | | Pol Demeuter (FN) | Jimmie Simpson (Norton) | Walfried Winkler (DKW) | Yvan Goor (Benelli) | |
1935 | | | Jimmie Guthrie (Norton) | Wal Handley (Velocette) | Arthur Geiß (DKW) | | |
1936 | | | Jimmie Guthrie (Norton) | Freddie Frith (Norton) | Henry Tyrell-Smith (Excelsior) | | |
1937 | | | Jimmie Guthrie (Norton) | Jimmie Guthrie (Norton) | Omobono Tenni (Moto Guzzi) | | |
1938 | | | Georg Meier (BMW) | Ted Mellors (Velocette) | Ewald Kluge (DKW) | | |
1939 | | | Dorino Serafini (Gilera) | Heiner Fleischmann (DKW) | Ewald Kluge (DKW) | | |