The Food Delivery App

S1, E2: Food delivery apps like Deliveroo and Just Eat are now used by billions around the world and their technology has changed the way we all eat. Mathematician Hannah Fry meets the R&D team behind food delivery titan Deliveroo, finds out how pensioners ordering baked goods revolutionized the future of the industry, and discovers how pizza made us fall in love with the internet during the 1990s.