There are a number of major high street chains keeping their doors closed this Boxing Day. Boxing Day has become renowned for being one of the year's biggest shopping days - but some businesses have confirmed they'll remain shut on both December 25 and 26, so staff can enjoy a well-earned rest with their families. In previous years, this has been well received by customers, and more retailers and supermarkets are deciding to follow. The Mirror has rounded up a list of all retailers and