Inside the cold store where it's -18C in a heatwave

Magnavale supplies frozen food to major supermarkets. As we take a tour, it feels like stepping inside my kitchen freezer. "That's exactly what it is – a giant version," Edgoose, 60, says. He describes Magnavale as one of the UK's largest cold storage facilities, with capacity for 145,000 pallets. The busy operation has to run like clockwork, as about 200 lorries will arrive to collect products every day. "The UK survives on frozen food, it's a big industry," he explains.