i was a born 1968 this was rerun in the seventies. Everyone at school would play out the last episode. I show these old series to the young now they cant understand why my eyes glaze over when i watch old stuff like this .I explain everyone had a b&w tv so no one missed colour back then ,remember when we had 3 channels of tv no one complained only having 3 and having to get up to change channel, no r/c simpler times .the older i get the more nostalgic i become. And that opening music wow what memories. Great classic series that the new young dont get .its not colour why havent they got iphones etc.the way the worlds become robinson crusoe can have my flat in exchange for his island. One change id prefer a woman friday please or two