Sainsbury’s trials 30-minute Click & Collect grocery service via Chop Chop app   Trial taking place from Sainsbury’s Pimlico store via the Chop Chop app. Customers pay via app and pick up shopping just 30 minutes after ordering online London, 2017-Aug-15 — /EPR Retail News/ — Sainsbury’s is today (11 August 2017) launching a trial that enables customers…