| Year | Winner |
|---|---|
| 1978 | Ernest Bevin School |
| 1977 | Ernest Bevin School |
| 1976 | Barnet |
| 1975 | Sir Walter St John School |
| 1974 | Ernest Bevin School |
| 1973 | John Ruskin Grammar School |
| 1972 | Swanley School |
| 1971 | Swanley School |
| 1970 | Swanley School |
| 1969 | Hillcroft School |
| 1968 | John Ruskin Grammar School |
| 1967 | Henry Thornton School II |
| 1966 | Canterbury School |
| 1965 | Selhurst Grammar School |
| 1964 | Sidcup |
| 1963 | Selhurst Grammar School |
| 1962 | Selhurst Grammar School |
| 1961 | Canterbury School |
| 1960 | Henry Thornton School II |