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London UK, 9 March 2026 - Epsilon today announced the launch of in-store sales attribution reporting through its Epsilon Retail Media platform, giving retailers and brands the ability to directly measure how digital retail media drives physical, on-shelf sales.
Retailers can now see how retail media investment influences both online and real-world purchasing within a single, unified platform, creating the foundation for effective reach at scale.
The new capability closes one of the biggest gaps in retail media measurement. More than 70% of UK retail sales still take place in physical stores (ONS Retail Sales Index), but the ability to link digital media to in-store conversion has long been absent. Brands have relied on assumptions or fragmented reporting.
Built directly into the Epsilon Retail Media platform, the new capability automatically reconciles on-site activity with in-store point-of-sale transactions. The result is a complete, end-to-end view of performance across the shopper journey, without sacrificing the digital performance metrics brands rely on.
“This innovation reinforces Epsilon’s pioneering role in retail media,” said Esme Robinson, Director Global Platform Solutions and Enablement at Epsilon. “By closing the loop between digital exposure and in‑store sales, we’re giving retailers and brands the proof they need to invest with confidence and optimise with precision at any scale.”
Designed for the UK’s in‑store reality
The UK’s retail landscape remains overwhelmingly store‑led, making in‑store attribution essential. Powered by a proprietary data infrastructure built to process large volumes of real‑time data, Epsilon Retail Media enables deterministic measurement of in‑store impact at scale, setting a benchmark for retail media measurement in the market.
Transparent omnichannel measurement
To support retailer transparency and advertiser confidence, Epsilon now delivers enhanced performance metrics within its platform, including:
Together, these metrics provide a level of omnichannel accountability that has previously been out of reach, enabling smarter investment decisions without losing digital performance granularity.
Closing the loop in retail media
By automating the connection between digital media exposure and in‑store sales, Epsilon delivers true closed‑loop measurement across online and offline channels. The capability can be made available to all Epsilon Retail Media onsite clients, regardless of size or maturity, ensuring consistent and accountable measurement.
With this launch, Epsilon establishes a new standard for retail media in the UK, empowering retailers and brands with the clarity, confidence and proof required to grow faster and invest smarter.
Discover more about Epsilon Retail Media.
ENDS
About Epsilon
Epsilon is a global technology, data and services company that the world’s leading brands use to harmonise consumer engagement across their paid, owned and earned channels. The Epsilon PeopleCloud platform includes capabilities such as data, identity resolution, customer data platforms, clean rooms, digital media, retail media, site personalisation, direct mail, loyalty, email marketing and measurement. By applying artificial intelligence against privacy-centric identity resolution–embedded in data-enriched analytic, marketing and media solutions and services—Epsilon allows marketers to bridge the divide between marketing and advertising technology, engaging consumers with 1 View, 1 Vision and 1 Voice. 1 View of their universe of potential buyers. 1 Vision for engaging each individual. 1 Voice to harmonise engagement across paid, owned and earned channels.
