If you're thinking of heading to London's most renowned 24/7 restaurant then you'll be gratified to learn that you'll have plenty of choice once you're up among the clouds. There are loads of naturally gluten-free menu items, and a seriously switched-on kitchen which is happy to make almost anything suitable if there's something you particularly fancy. Take your pick from the current gluten-free offering of East End eels, goat meatballs, charred mackerel, baked Alaska and whole chicken. Thrillingly, the eponymous - and dribble-inducing - duck topped waffle can also be whipped up to order for gluten-dodgers. One for a special occasion, definitely.