Season 1 BBC One , 1962 Season 2 BBC One , 1962 Season 3 BBC One , 1963 Season 4 BBC One , 1963 Season 5 BBC One , 1964 Season 6 BBC One , 1964 Season 7 BBC One , 1964 - 1965 Season 8 BBC One , 1965 Season 9 BBC One , 1966 Season 10 BBC One , 1966 - 1967 Season 11 BBC One , 1967 Season 12 BBC One , 1967 Season 13 BBC One , 1968 Season 14 BBC One , 1968 - 1969 Season 15 BBC One , 1969 Season 16 BBC One , 1969 - 1970 Season 17 BBC One , 1970 Season 18 BBC One , 1970 - 1971 Season 19 BBC One , 1971 Season 20 BBC One , 1971 Season 21 BBC One , 1972 Season 22 BBC One , 1972 Season 23 BBC One , 1973 Season 24 BBC One , 1973 Season 25 BBC One , 1974 Season 26 BBC One , 1974 Season 27 BBC One , 1975 Season 28 BBC One , 1975 Season 29 BBC One , 1976 Season 30 BBC One , 1976 Season 31 BBC One , 1977 Season 32 BBC One , 1977 - 1978 Season 33 BBC One , 1978 Season 34 BBC One , 1979 Season 35 BBC One , 1979 - 1980 Season 36 BBC One , 1980 Season 37 BBC One , 1980 - 1981 Season 38 BBC One , 1981 Season 39 BBC One , 1982 Season 40 BBC One , 1982 Season 41 BBC One , 1983 Season 42 BBC One , 1983