Jack and the Beanstalk is a big, sprawling family show that opens with a baffling gesture. A booming voiceover announces that Hackney is being menaced by some unseen threat. Enter an evil monster, Funella Fleshcreep, who wears facial moisturiser made from liquefied avocado. This green-cheeked ogre is challenged by the virtuous characters, Jack Trot and Simple Simon, who must defeat her and deliver Hackney from danger.