Ecselis will combine technology, data, creative and media across the business spanning paid search, SEO, performance display, conversion rate optimisation (CRO), affiliate marketing and dynamic creative optimisation (DCO).

A well as Thomson as head of Ecselis UK, Tom Johnson will be head of product & development, and Suzie Rafla head of performance operations. It will consist of a specialist team of more than 60 in the UK, across both operations and account services.

Paul Frampton, group managing director, Havas Media Group UK, said: “Ecselis will tackle the two biggest challenges in performance right now: being channel agnostic and ensuring that message and medium are fully intertwined.”