How does your favourite stack up? MailOnline reveals how much air is in popular crisp packets

Which brands have the worst air-to-crisp ratio?
To find out, MailOnline carried out its own experiment, with shocking results. So how does your favourite stack up?

Related Keywords

United Kingdom ,Stuart Farrimond ,Oxford University ,University Of Chester ,Walkers ,Tesco ,Onion Monster Munch ,Tangy Cheese Doritos ,Hula Hoops ,Walkers Cheese ,Pickled Onion Monster Munch ,Chicken Tikka ,Ready Salted ,Chocolate Digestive ,Chocolate Digestives ,