Season 1 BBC One , 1962 Watch now Season 2 BBC One , 1963 Watch now Season 3 BBC One , 1964 Watch now Season 4 BBC One , 1965 Watch now Season 5 BBC One , 1970 Watch now Season 6 BBC One , 1970 Watch now Season 7 BBC One , 1972 Watch now Season 8 BBC One , 1974 Watch now