m/SIX

We are the UK’s fastest-growing media planning and buying agency. A progressive and entrepreneurial, international network that was born digital.

+44 20 7079 9800

m/SIX is one of the fastest growing media agencies. A progressive and entrepreneurial international media network that was born digital, the agency prides itself on its pioneering, energetic approach and honest culture. With over 40 offices worldwide, m/SIX is backed by WPP, the world's largest communications agency network, and embraces a unique ownership structure between The&Partnership and GroupM. This means we retain a flexible and entrepreneurial spirit, unencumbered by the rigid, legacy structures of traditional media agencies – whilst simultaneously being backed by the world’s largest media trading pool and advertising data lake. m/SIX specialises in driving business growth in the modern media landscape and helps clients transition from a world of certainty to a new world of adaptability. m/SIX are the architects of bespoke, dedicated, multi-disciplinary teams that closely partner client marketing operations. The agency firmly places tech and data at the heart of these teams: insight and strategy, activation and optimisation are all informed by the same source of customer truth.

Latest News

Oct. 20, 2026

Citroen and BETC Paris Celebrate the Return of the 2 CV with a Landmark Campaign

In 2026, it makes a comeback, bringing electric mobility and everyday optimism within everyone's reach

Oct. 20, 2026

Lingokids Just Launched Spanish and Portuguese: Why Families Will Love It

Leading kids’ platform ramps up global ambition with first localized versions of its extensive games library