Marks & Spencer will spend £340 million on a giant automated warehouse in Northamptonshire as it accelerates efforts to double the size of its food business. The 1.3 million sq ft facility, to be built at Daventry’s international rail freight terminal, represents the retailer’s biggest supply chain investment in its history. It will create 2,000 jobs during construction and a further 1,000 permanent roles once fully operational in 2029. Products moving through the warehouse will...