Based in Bangor, north Wales, the wholesaler operates a cash & carry and delivery business out of a 33,000 sq ft depot which services north and west Wales and Anglesey.
The awards programme, set up five years ago, is designed to improve depot standards and customer service, and to reward excellence.
Manager Tim Parry said: "Everyone here feels a real sense of pride in this achievement. We just got on and looked after our customers as best we could, improving availability and customer service. We are passionate about helping our customers."
The Landmark Cash & Carry of the Year Award went to Blakemore in Newport, south Wales, and the Delivered Depot of the Year Award went to Sutherland Brothers in Wick, Scotland.