| Editie | Jaar | Circuit | Klasse | 1e | 2e | 3e | Snelste ronde |
| 21 | 1949 | Clady | 250 cc |  Maurice Cann (Moto Guzzi) |  Bruno Ruffo (Moto Guzzi) | Ron Mead (Norton) | Maurice Cann (Moto Guzzi) |
| 350 cc | Freddie Frith (Velocette) | Charlie Salt (Velocette) |  Reg Armstrong (AJS) | Freddie Frith (Velocette) |
| 500 cc | Leslie Graham (AJS) |  Artie Bell (Norton) | Nello Pagani (Gilera) | Leslie Graham (AJS) |
| |
| 22 | 1950 | Clady | 125 cc | Carlo Ubbiali (FB Mondial) | Bruno Ruffo (FB Mondial) | – | Carlo Ubbiali (FB Mondial) |
| 250 cc | Maurice Cann (Moto Guzzi) | Dario Ambrosini (Benelli) | Wilf Billington (Moto Guzzi) | Maurice Cann (Moto Guzzi) |
| 350 cc | Bob Foster (Velocette) | Reg Armstrong (Velocette) |  Harry Hinton (Norton) | Bob Foster (Velocette) |
| 500 cc | Geoff Duke (Norton) | Leslie Graham (AJS) | Johnny Lockett (Norton) | Geoff Duke (Norton) |
| |
| 23 | 1951 | Clady | 125 cc | Cromie McCandless (FB Mondial) | geen tellend resultaat wegens te weinig deelnemers | Cromie McCandless (FB Mondial) |
| 250 cc | Bruno Ruffo (Moto Guzzi) | Maurice Cann (Moto Guzzi) | Arthur Wheeler (Velocette) | Bruno Ruffo (Moto Guzzi) |
| 350 cc | Geoff Duke (Norton) | Ken Kavanagh (Norton) | Johnny Lockett (Norton) | Geoff Duke (Norton) |
| 500 cc | Geoff Duke (Norton) | Ken Kavanagh (Norton) | Umberto Masetti (Gilera) | Alfredo Milani (Gilera) |
| |
| 24 | 1952 | Clady | 125 cc | Cecil Sandford (MV Agusta) | Bill Lomas (MV Agusta) | Charlie Salt (MV Agusta) | Cecil Sandford (MV Agusta) |
| 250 cc | Maurice Cann (Moto Guzzi) | Enrico Lorenzetti (Moto Guzzi) | Leslie Graham (Velocette) | Enrico Lorenzetti (Moto Guzzi) |
| 350 cc | Ken Kavanagh (Norton) | Reg Armstrong (Norton) |  Rod Coleman (AJS) | Ken Kavanagh (Norton) |
| 500 cc | Cromie McCandless (Gilera) | Rod Coleman (AJS) | Bill Lomas (MV Agusta) | Leslie Graham (MV Agusta) |
| |
| 25 | 1953 | Dundrod | 125 cc |  Werner Haas (NSU) | Cecil Sandford (MV Agusta) | Reg Armstrong (NSU) | Werner Haas (NSU) |
| 250 cc | Reg Armstrong (NSU) | Werner Haas (NSU) | Fergus Anderson (Moto Guzzi) | Reg Armstrong (NSU) |
| 350 cc | Ken Mudford (Norton) | Bob McIntyre (AJS) | Rod Coleman (AJS) | Ken Mudford (Norton) |
| 500 cc | Ken Kavanagh (Norton) | Geoff Duke (Gilera) | Jack Brett (Norton) | Ken Kavanagh (Norton) en
Geoff Duke (Gilera) |
| Zijspannen | Cyril Smith / Les Nutt (Norton) | Pip Harris / Ray Campbell (Norton) |  Jacques Drion / Inge Stoll (Norton) | Eric Oliver / Lorenzo Dobelli (Norton) |
| |
| 26 | 1954 | Dundrod | 125 cc |  Rupert Hollaus (NSU) | Hermann Paul Müller (NSU) | Hans Baltisberger (NSU) | Carlo Ubbiali (MV Agusta) |
| 250 cc | Werner Haas (NSU) | Hans Baltisberger (NSU) | Hermann Paul Müller (NSU) | Werner Haas (NSU),
Rupert Hollaus (NSU) en
Hans Baltisberger (NSU) |
| 350 cc |  Ray Amm (Norton) | Jack Brett (Norton) | Bob McIntyre (AJS) | Ray Amm (Norton) |
| 500 cc[1] | Ray Amm (Norton) | Rod Coleman (AJS) | Gordon Laing (Norton) | Ray Amm (Norton) |
| Zijspannen | Eric Oliver / Lorenzo Dobelli (Norton) | Cyril Smith / Stanley Dibben (Norton) | Wilhelm Noll / Fritz Cron (BMW) | Eric Oliver / Lorenzo Dobelli (Norton) |
| |
| 27 | 1955 | Dundrod | 250 cc | John Surtees (NSU) | Sammy Miller (NSU) | Umberto Masetti (MV Agusta) | John Surtees (NSU) |
| 350 cc | Bill Lomas (Moto Guzzi) | John Hartle (Norton) | John Surtees (Norton) | Bill Lomas (Moto Guzzi) |
| 500 cc | Bill Lomas (Moto Guzzi) | John Hartle (Norton) | Dickie Dale (Moto Guzzi) | Bill Lomas (Moto Guzzi) |
| |
| 28 | 1956 | Dundrod | 125 cc | Carlo Ubbiali (MV Agusta) | Romolo Ferri (Gilera) | Bill Webster (MV Agusta) | Carlo Ubbiali (MV Agusta) |
| 250 cc |  Luigi Taveri (MV Agusta) | Sammy Miller (NSU) | Arthur Wheeler (Moto Guzzi) | Carlo Ubbiali (MV Agusta) |
| 350 cc | Bill Lomas (Moto Guzzi) | Dickie Dale (Moto Guzzi) | John Hartle (Norton) | Bill Lomas (Moto Guzzi) |
| 500 cc | John Hartle (Norton) | Bob Brown (Matchless) | Peter Murphy (Matchless) | Geoff Duke (Gilera) |
| Zijspannen | Wilhelm Noll / Fritz Cron (BMW) | Pip Harris / Ray Campbell (Norton) | Florian Camathias / Maurice Büla (BMW) | Wilhelm Noll / Fritz Cron (BMW) |
| |
| 29 | 1957 | Dundrod | 125 cc | Luigi Taveri (MV Agusta) | Tarquinio Provini (FB Mondial) | Remo Venturi (MV Agusta) | Tarquinio Provini (FB Mondial) |
| 250 cc | Cecil Sandford (FB Mondial) | Dave Chadwick (MV Agusta) | Tommy Robb (NSU) | Dave Chadwick (MV Agusta) |
| 350 cc | Keith Campbell (Moto Guzzi) | Keith Bryen (Moto Guzzi) | Libero Liberati (Gilera) | Keith Bryen (Moto Guzzi) |
| 500 cc | Libero Liberati (Gilera) | Bob McIntyre (Gilera) | Geoff Duke (Gilera) | John Surtees (MV Agusta) |
| |
| 30 | 1958 | Dundrod | 125 cc | Carlo Ubbiali (MV Agusta) | Luigi Taveri (Ducati) | Dave Chadwick (Ducati) | Alberto Gandossi (Ducati) |
| 250 cc | Tarquinio Provini (MV Agusta) | Tommy Robb (NSU) | Dave Chadwick (MV Agusta) | Tarquinio Provini (MV Agusta) |
| 350 cc | John Surtees (MV Agusta) | John Hartle (MV Agusta) | Terry Shepherd (Norton) | John Surtees (MV Agusta) en
John Hartle (MV Agusta) |
| 500 cc | John Surtees (MV Agusta) | Bob McIntyre (Norton) | John Hartle (MV Agusta) | John Surtees (MV Agusta) |
| |
| 31 | 1959 | Dundrod | 125 cc | Mike Hailwood (Ducati) | Gary Hocking (MZ) |  Ernst Degner (MZ) | Mike Hailwood (Ducati) |
| 250 cc | Gary Hocking (MZ) | Mike Hailwood (FB Mondial) | Ernst Degner (MZ) | Gary Hocking (MZ) |
| 350 cc | John Surtees (MV Agusta) | Bob Brown (Norton) | Geoff Duke (Norton) | John Hartle (MV Agusta) |
| 500 cc | John Surtees (MV Agusta) | Bob McIntyre (Norton) | Geoff Duke (Norton) | John Surtees (MV Agusta) |
| |
| 32 | 1960 | Dundrod | 125 cc | Carlo Ubbiali (MV Agusta) | Gary Hocking (MV Agusta) | Ernst Degner (MZ) | Ernst Degner (MZ) |
| 250 cc | Carlo Ubbiali (MV Agusta) | Tom Phillis (Honda) | Jim Redman (Honda) | Carlo Ubbiali (MV Agusta) |
| 350 cc | John Surtees (MV Agusta) | John Hartle (Norton) | Hugh Anderson (AJS) | Alan Shepherd (AJS) |
| 500 cc | John Hartle (Norton) | John Surtees (MV Agusta) | Alan Shepherd (Matchless) | John Surtees (MV Agusta) |
| |
| 33 | 1961 | Dundrod | 125 cc |  Kunimitsu Takahashi (Honda) | Ernst Degner (MZ) | Tom Phillis (Honda) | Tom Phillis (Honda) |
| 250 cc | Bob McIntyre (Honda) | Mike Hailwood (Honda) | Jim Redman (Honda) | Bob McIntyre (Honda) |
| 350 cc | Gary Hocking (MV Agusta) | Alistair King (Bianchi) |  František Šťastný (Jawa) | Gary Hocking (MV Agusta) |
| 500 cc | Gary Hocking (MV Agusta) | Mike Hailwood (Norton) | Alistair King (Norton) | Gary Hocking (MV Agusta) |
| |
| 34 | 1962 | Dundrod | 125 cc | Luigi Taveri (Honda) | Tommy Robb (Honda) | Jim Redman (Honda) | Tommy Robb (Honda) |
| 250 cc | Tommy Robb (Honda) | Jim Redman (Honda) | Luigi Taveri (Honda) | Luigi Taveri (Honda) |
| 350 cc | Jim Redman (Honda) | František Šťastný (Jawa) | Tommy Robb (Honda) | Mike Hailwood (MV Agusta) |
| 500 cc | Mike Hailwood (MV Agusta) | Alan Shepherd (Matchless) | Phil Read (Norton) | Mike Hailwood (MV Agusta) |
| |
| 35 | 1963 | Dundrod | 125 cc | Hugh Anderson (Suzuki) | Bert Schneider (Suzuki) | Luigi Taveri (Honda) | Bert Schneider (Suzuki) |
| 250 cc | Jim Redman (Honda) | Tarquinio Provini (Moto Morini) | Tommy Robb (Honda) | Tarquinio Provini (Moto Morini) |
| 350 cc | Jim Redman (Honda) | Mike Hailwood (MV Agusta) | Luigi Taveri (Honda) | Jim Redman (Honda) |
| 500 cc | Mike Hailwood (MV Agusta) | John Hartle (Gilera) | Derek Minter (Gilera) | Mike Hailwood (MV Agusta) |
| |
| 36 | 1964 | Dundrod | 125 cc | Hugh Anderson (Suzuki) | Luigi Taveri (Honda) | Ralph Bryans (Honda) | Hugh Anderson (Suzuki) |
| 250 cc | Phil Read (Yamaha) | Jim Redman (Honda) | Ralph Bryans (Honda) | Phil Read (Yamaha) |
| 350 cc | Jim Redman (Honda) |  Mike Duff (AJS) | Gustav Havel (Jawa) | Jim Redman (Honda) |
| 500 cc | Phil Read (Norton) | Dick Creith (Norton) | Jack Ahearn (Norton) | Phil Read (Norton) |
| |
| 37 | 1965 | Dundrod | 125 cc | Ernst Degner (Suzuki) | Klaus Enderlein (MZ) | Derek Woodman (MZ) | Ernst Degner (Suzuki) |
| 250 cc | Phil Read (Yamaha) | Mike Duff (Yamaha) | Derek Woodman (MZ) | Phil Read (Yamaha) |
| 350 cc | František Šťastný (Jawa) | Bruce Beale (Honda) | Gustav Havel (Jawa) | Jim Redman (Honda) |
| 500 cc | Dick Creith (Norton) |  Paddy Driver (Matchless) | Chris Conn (Norton) | Paddy Driver (Matchless) |
| |
| 38 | 1966 | Dundrod | 125 cc | Luigi Taveri (Honda) | Ralph Bryans (Honda) | Phil Read (Yamaha) | Ralph Bryans (Honda) |
| 250 cc | Ginger Molloy (Bultaco) | Gyula Marsovszky (Bultaco) | Kevin Cass (Bultaco) | Phil Read (Yamaha) |
| 350 cc | Mike Hailwood (Honda) | Giacomo Agostini (MV Agusta) | Tommy Robb (Bultaco) | Mike Hailwood (Honda) |
| 500 cc | Mike Hailwood (Honda) | Giacomo Agostini (MV Agusta) | František Šťastný (Jawa-ČZ) | Mike Hailwood (Honda) |
| |
| 39 | 1967 | Dundrod | 125 cc | Bill Ivy (Yamaha) | Phil Read (Yamaha) | Stuart Graham (Suzuki) | Bill Ivy (Yamaha) |
| 250 cc | Mike Hailwood (Honda) | Ralph Bryans (Honda) | Bill Ivy (Yamaha) | Mike Hailwood (Honda) |
| 350 cc | Giacomo Agostini (MV Agusta) | Ralph Bryans (Honda) | Heinz Rosner (MZ) | Giacomo Agostini (MV Agusta) |
| 500 cc | Mike Hailwood (Honda) | John Hartle (Métisse-Matchless) | Jack Findlay (McIntyre-Matchless) | Mike Hailwood (Honda) |
| |
| 40 | 1968 | Dundrod | 125 cc | Bill Ivy (Yamaha) | Phil Read (Yamaha) | Heinz Rosner (MZ) | Phil Read (Yamaha) |
| 250 cc | Bill Ivy (Yamaha) | Heinz Rosner (MZ) | Rodney Gould (Bultaco-Yamaha) | Bill Ivy (Yamaha) |
| 350 cc | Giacomo Agostini (MV Agusta) | Kel Carruthers (Métisse-Aermacchi) | Brian Steenson (Aermacchi) | Giacomo Agostini (MV Agusta) |
| 500 cc | Giacomo Agostini (MV Agusta) | Robin Fitton (Norton) | John Hartle (Métisse-Matchless) | Giacomo Agostini (MV Agusta) |
| |
| 41 | 1969 | Dundrod | 50 cc |  Ángel Nieto (Derbi) |  Jan de Vries (Van Veen-Kreidler) | Frank Whiteway (Crooks-Suzuki) | Paul Lodewijkx (Jamathi) |
| 250 cc | Kel Carruthers (Benelli) |  Kent Andersson (Yamaha) | Ray McCullough (Yamaha) | Kel Carruthers (Benelli) |
| 350 cc | Giacomo Agostini (MV Agusta) | Heinz Rosner (MZ) | Cecil Crawford (Aermacchi) | Giacomo Agostini (MV Agusta) |
| 500 cc | Giacomo Agostini (MV Agusta) | Brian Steenson (Seeley) | Malcolm Uphill (Norton) | Giacomo Agostini (MV Agusta) |
| Zijspannen | Klaus Enders / Ralf Engelhardt (BMW) | Siegfried Schauzu / Horst Schneider (BMW) | Franz Linnarz / Rudolf Kühnemund (BMW) | Klaus Enders / Ralf Engelhardt (BMW) |
| |
| 42 | 1970 | Dundrod | 50 cc | Ángel Nieto (Derbi) | Salvador Cañellas (Derbi) | Aalt Toersen (Jamathi) | Ángel Nieto (Derbi) |
| 250 cc | Kel Carruthers (Yamaha) | Rodney Gould (Yamaha) | Paul Smart (Yamaha) | Kel Carruthers (Yamaha) |
| 350 cc | Giacomo Agostini (MV Agusta) | Günter Bartusch (MZ) | Tommy Robb (Yamaha) | Giacomo Agostini (MV Agusta) |
| 500 cc | Giacomo Agostini (MV Agusta) | Ginger Molloy (Kawasaki) | Percy Tait (Seeley) | Giacomo Agostini (MV Agusta) |
| Zijspannen | Klaus Enders / Ralf Engelhardt (BMW) | Siegfried Schauzu / Peter Rutterford (Apfelbeck-BMW) | Jean-Claude Castella / Albert Castella (BMW) | Klaus Enders / Ralf Engelhardt (BMW) |
| |
| 43 | 1971 | Dundrod | 50 cc | afgelast wegens te weinig (slechts 8) inschrijvingen. |
| 250 cc | Ray McCullough (Yamsel) |  Jarno Saarinen (Yamaha) | Dieter Braun (Yamaha) | Ray McCullough (Yamsel) |
| 350 cc | Peter Williams (MZ) | Dieter Braun (Yamaha) | Tony Jefferies (Yamsel) | Jarno Saarinen (Yamaha) |
| 500 cc | Jack Findlay (Jada-Suzuki) | Rob Bron (Suzuki) | Tommy Robb (Seeley) | Jack Findlay (Jada-Suzuki) |
| Zijspannen | Horst Owesle / Peter Rutterford (Münch-URS) | Siegfried Schauzu / Wolfgang Kalauch (BMW) | Heinz Luthringshauser / Hans-Jürgen Cusnik (BMW) | Horst Owesle / Peter Rutterford (Münch-URS) |
Circuit Clady (1922 – 1952)
Circuit Dundrod (1953 – heden)
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Bruce Graham (Norton) 
Enrico Lorenzetti (Moto Guzzi) 
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