The final episode of the series features the Wilkinsons in North London, a family of fifteen whose food spend is a whopping 632 pounds a week. Aside from their 13 children, eating different meals in multiple shifts is sending their food bill sky high. Matt cooks the family a tasty chicken in tarragon sauce with hasselback potatoes for just 90p per person, as well as helping tackle lunchboxes and party food. Meanwhile, Susanna finds out how shopping habits are changing and puts the country's favourite condiment to the super cheap taste test.