Overall shop prices reported deflation of 1.9% in September from a 1.4% decline in August. Food reported annual deflation of 0.5% from a 0.2% rise in August. On a 12-month average basis, the Shop Price Index reported deflation of 1.7%. Non-food deflation accelerated further to 2.9% from 2.4% in August. LONDON, 2015-10-7 — /EPR Retail…