A behind-the-scenes guide to the Mr Kipling Factory in Carlton, Yorkshire, which first opened in the 1970s and was the largest bakery in Europe at the time. Members of the workforce provide an insight into the cutting edge technology that keeps the cakes coming 24 hours a day, while food historian Dr Polly Russell presents a guide to the company's history, revealing how recipes that date back to the 1800s remain popular favourites to this day.