>Some of the lost episodes occasionally get found in places like New Zealand where the BBC sold copies to local networks years ago
>
>Yes, that does still happen... but the spools are so large and the equipment to play them so ridiculous that anybody who managed to hold onto an episode has probably got sick of the hulking great thing and dumped it ages ago. ;-)

I guess an alien with a big enough radio telescope can always collect them and send them back to us. Could be a good business if you are over 40 light years away.


Nick