No Sex Please, We're British (1973) is a farcical tale of what happens when a hapless postman delivers a set of saucy postcards intended for a porn shop to a stuffy upper-crust bank instead. The effect is absolutely delirious as the once uptight moneylenders are either mortified of suddenly liberated. Either way, hefty-mammaried Margaret Nolan strips down to some lascivious lingerie in a scene that will make your Big Ben tick.