Katie and Giancarlo Caldesi own London's Caldesi in Marylebone as well as Caldesi in Campagna in Bray. They have co-authored the bestselling The Diabetes Weight-Loss Cookbook, The Reverse Your Diabetes Cookbook, Around The World in Salads and The Gentle Art of Preserving and have both appeared on Saturday Kitchen. Giancarlo was diagnosed with type 2 diabetes in 2012. Since then he has lost nearly four stone and kept his diabetes in remission by following a low-carb diet, while Katie has lost more than a stone in weight, too.