Walkers Snack Foods Ltd., a unit of PepsiCo, Inc., is the United Kingdom's leading manufacturer of crisps, or potato chips. Every day about 11 million people bite into one of the company's products, which are manufactured at 15 sites around the country. Walkers grew from a regional Midlands brand to one of the biggest in the United Kingdom after being acquired by Pepsi in 1989. Other key brands of the company include Quavers, Monster Munch, Dippas, and Sensations.it, still further.