Walkers Crisps was established in 1948 in Post World War 2 Leicester by a butcher named M.R. Walker and has since become the biggest crisp producer in the UK, holding 47% of the market. The document outlines Walkers' marketing mix, including segmentation targeting all ages and demographics across Great Britain and Ireland. It discusses products offered at various price points available widely in stores, and promotion through TV ads and offers that have helped make Walkers extremely successful and well positioned to remain the market leader.