| 1979 | | My Rating |
| The Unlimited Dream Company | J. G. Ballard |
| The Fountains of Paradise | Arthur C. Clarke |
| On Wings of Song | Thomas M. Disch |
| Blind Voices | Tom Reamy |
| A.K.A.: A Cosmic Fable | Rob Swigart |
| 1978 |
| A Scanner Darkly | Philip K Dick |
| 1977 |
| High Rise | J G Ballad |
| Triton | Samuel R Delany |
| Inferno | Larry Niven and Jerry Pournelle |
| The Space Machine | Christopher Priest |
| The Jonah Kit | Ian Watson |
| 1976 |
| Brontomek! | Michael G. Coney |
| 1975 |
| Orbitsville | Bob Shaw |  | | | |
| 1974 |
| Inverted World | Christopher Priest |
| 1973 |
| Rendezvous With Rama | Arthur C. Clarke |
| 1972 |
| No Award Given |
| 1971 |
| The Moment of Eclipse | Brian W. Aldiss |
| 1970 |
| The Jagged Orbit | John Brunner |