Case Study: Co-op achieves reduced cost per new customer (£52.47) and 10.1% conversion rate with Quantcast

Co-op uplevels its membership program with performance

Co-op, one of the UK’s largest consumer co‑operatives with over 5 million members and more than 2,500 stores, wanted to drive a new wave of membership sign-ups. The retailer needed a prospecting and retargeting campaign that could reach in‑market audiences at scale and surface seasonal audience insights to tailor more effective advertising.

Co-op partnered with Quantcast for a full‑funnel performance campaign using Ara-powered dCPM bidding and strict brand safety (70% viewability, DoubleVerify pre-bid). The campaign settled at a cost per new customer of £52.47 (vs. a £60 target) with a 10.1% conversion rate, became an always‑on strategy, and delivered actionable audience trends (e.g., pumpkin searches in October, one‑pot recipes in November); Co-op is now exploring cookieless approaches and CRM-driven re‑engagement.

Co-op

Dominic Adams

Performance Marketing Manager