Strength Through Co-operation Founded in 1966, the Sterling Supergroup is a true member’s buying co-operative, with 40 wholesalers and an annual turnover in excess of £350 million. The membership consists of family owned wholesale companies located throughout the United Kingdom, supplying thousands of catering outlets. Product ranges supplied include a full range of ambient, frozen, fresh & chilled foods, and non-foods. The wholesalers within Sterling support a national promotion programme arranged by the Head Office but retain their individual identity.