London, 2017-May-08 — /EPR Retail News/ — Period Covered: 03- 07 April 2017 Overall shop prices reported deflation of 0.5% in April from the 0.8% fall in March. This is the shallowest deflation rate since November 2013. Non-food deflation decelerated to 1.4% from the 2.0% decline in March. This is the shallowest deflation rate since…