Season 1 BBC One , 1962 Season 2 BBC One , 1963 - 1964 Season 3 BBC One , 1965 Season 4 BBC One , 1965 - 1966 Season 5 BBC One , 1966 - 1967 Season 6 BBC One , 1967 - 1968 Season 7 BBC One , 1969 Season 8 BBC One , 1970 - 1971