Growing competition amongst UK supermarkets looking to expand their market share is set to create opportunities for investors and developers, according to Savills' latest food sector report. The report states that the top four grocery retailers in the country have continued to complete sale-and-leaseback deals and Sainsbury's has also entered into joint venture agreements with developers to expand its portfolio, thus creating opportunities for developers to unlock the potential of existing sites. Some supermarkets have also released value from their freehold estate by entering into sale and leasebacks with institutional investors.