This looks like it’s a genuine old GPO promotional film about what were then future developments….
Like a lot of such things, it gets a few concepts vaguely right but in amusingly wrong ways. I love the method of getting a print-out. I think we should go for that, it’s so much easier than messing around with USB cables and printer drivers…
Found at Boing Boing, like a lot of other fun things
 As opposed to a parody made years later
 The General Post Office, which is the government thingy that had its phones and bits split off into BT a long time ago
 The ultimate power of evil in the universe, of course