CLAIRE PTAK is former pastry chef at the legendary California restaurant Chez Panisse, and now chef-proprietor of Violet Cakes in London. She was chosen to make Prince Harry and Meghan Markle's wedding cake. HENRY DIMBLEBY was co-founder of healthy fast food chain, LEON. Together with John Vincent and Allegra McEvedy, the first branch was opened in London in July 2004, and six months after opening, LEON was named the Best New Restaurant in Great Britain at the Observer Food Monthly Awards. LEON now has more than 55 restaurants (including branches in Washington DC, Amsterdam, Utrecht and Oslo). The first LEON cookbook was published in 2008 and a decade on the range now includes 15 titles.