 The feature @-@ length film sequels Thunderbirds Are Go and Thunderbird 6 were released in 1966 and 1968 . The first was greenlit by Lew Grade before the TV series had started its broadcast run . Written and produced by the Andersons and directed by David Lane , both films were distributed by United Artists . Neither was a critical or commercial success , and Century 21 Cinema 's plans for further sequels were abandoned . 
 The feature @-@ length film sequels Thunderbirds <a href='drop_aux' title='1'><mark>Are</mark></a>Go and Thunderbird 6 <a href='uninflect' title='2'><mark>were</mark></a> released in 1966 and 1968 . The first was greenlit by Lew Grade before the TV series <a href='been_done' title='3'><mark>had</mark></a> started its broadcast run . Written and produced by the Andersons and directed by David Lane , both films <a href='uninflect' title='4'><mark>were</mark></a> distributed by United Artists . Neither was a critical or commercial success , and Century 21 Cinema <a href='null_genetive' title='5'><mark>'s</mark></a>plans for further sequels <a href='uninflect' title='6'><mark>were</mark></a> abandoned . 
Da feature @-@ length film sequels Thunderbirds Go and Thunderbird 6 was released in 1966 and 1968 . Tdafirst was greenlit by Lew Grade b4 the TV series done started its broadcast run . Written and produced by thdandersons and directed by David Lane , both films was distributed by United Artists . Neither was a critical or commercial success , and Century 21 Cinema  plans for further sequels was abandoned .