Mackays (or M&Co) is a chain store selling women's, men's and children's clothes, as well as small homeware products. The head office is in Renfrew, Scotland and its main buying office is based in London, UK. Mackays was established in 1834 in Scotland and has grown since then to become one of the largest fashions clothing retailers in the UK and has been selling clothing for over 50 years. The chain operates over 300 stores and also has an online shop. More info on the Mackays website. Go directly to the section on zips.