"The algorithm, called Darwin (that’s Decision Algorithm Rating What Ingredient’s Next), determines how snack portions are sorted into punnets, how customised Graze boxes are labelled, and how they are packed directly into Royal Mail vans. It also records the customer’s order history and preferences, monitors stock levels and tracks the location of workers on the factory floor (stock replenishers wear wireless devices on their wrists). “It’s possible to get 4.9 million different combinations of snacks in a Graze box,” says Jones. So the 250-person company uses data — including over 50 million snack ratings — to personalise each customer’s snack selection. “If you bin all the things unsuitable for vegans, we’ll learn that,” explains cofounder Edd Read, 26, the AI specialist who developed Darwin. “Then, if we launch a product that’s unsuitable for vegans, Darwin knows not to send it to you."