​LONDON, Country, 2017-Jun-19 — /EPR Retail News/ — SPAR Natural has won the NACS Insight 2017 International Convenience Retailer of the Year Award for its SPAR Natural convenience store in Gran Canaria, Spain. The award, sponsored by Accenture, was presented during the NACS Insight Convenience Summit–Europe in London on June 14 at this year’s International Convenience…