Gluten free restaurants London: the guts of it. Gluten is found in wheat and other grains, such as barley and rye. It also makes its way into other foodstuffs, making it difficult for celiac disease sufferers – who cannot eat gluten – to enjoy food. Many others, such as Twitter celebrity, self-described food expert, and sometime dancer/singer Miley Cyrus, advocate a gluten-free diet for general health and wellbeing. Luckily, in terms of gluten free restaurants, London has a good selection.