Having seen this shown once on TV many many years ago, this joined my collection of films alongside Carry On..., House in Nightmare Park, No Sex Please.. etc etc as a stupidly funny film with a whole host of great actors and actresses from the 70s. So many moments that make me laugh out loud - from Richard Beckinsale spying in the treetops, the chauffeur who gets to ride in the passenger seat and the fabulous John Wells, none of which are outdone by Spike Milligan and Michael Bentine. Cheesy, wonderfully funny film -one which probably wouldn't be made today for its portrayal of 'foreign' superpowers.