This document contains a case study about competition in the UK razor market. Traditionally dominated by Gillette and Procter & Gamble, the market saw the entry of a new firm, King of Shaves (KMI), in 2008. While KMI gained market share in complementary products like gels and foams, it struggled to break Gillette's dominance in razors, achieving just 3% market share by 2013. KMI continues innovating with new products like its foam-free Hyperblade razor in an effort to challenge the incumbent firms and grow its business in the concentrated razor industry.