I have been dumped on the edge of an industrial estate, just on the outskirts of the city, looking for what seems to be Leeds’s only artisan chocolatier – Lauden Chocolate. This, I think, is how niche crime thrillers start. But I find Lauden’s unit and no blood is shed. I meet Stephen Trigg, who has built up, with his wife, Sun, a very successful chocolate business, supplying big, Michelin-starred restaurants and British Airways first-class passengers.
