I tasted Heston's Topsy Turvy £325 menu - which starts with dessert and ends with a starter - and, believe it or not, he's on to something

Sharing a bag of sweets with Heston Blumenthal is like tucking into a packet of jelly beans with my five-year-old. There are 'oohs', 'aahs', excited giggles and scrunchy foil wrappers flying everywhere.