Season 1 ITV1 , 1968 Season 2 ITV1 , 1969 Season 3 ITV1 , 1969 Season 4 ITV1 , 1970 Season 5 ITV1 , 1970 - 1971 Season 6 ITV1 , 1972 Season 7 ITV1 , 1972 - 1973
, 1968