m/SIX is the UK's fastest-growing media planning and buying agency. 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. m/SIX specialises in driving commercial, as well as audience growth, in today’s data and tech-led media landscape, and is an industry leader in transparency, martech and next-generation audience insight. Clients include TalkTalk, Toyota, Lexus, News Corp, AstraZeneca, Aetna, Britvic and Virgin Money.

Sector Experience

  • Charities
  • Clothing/Accessories
  • Drink
  • Financial services
  • Food
  • Telecoms
  • Media
  • Retail
  • Travel/Transport
  • Technology

Our Clients

  • Ambitious About Autism
  • Avon
  • Britvic
  • BIC
  • Bridgestone
  • Britvic
  • Emmi
  • First Utility
  • Hotels.com
  • Good Hemp
  • Just Eat
  • Lexus
  • MoneyFarm
  • News UK
  • Onken
  • TalkTalk
  • Tate+Lyle
  • Toyota / Lexus
  • Virgin Money
  • Vitality



CPD Logo


m/SIX is a partner in The&Partnership, an independent agency holding company where the majority owners are the founders and partners of the individual businesses, sharing one bottom line. A cross-discipline communications group built for today’s complex industry landscape, The&Partnership comprises of 15 agencies spanning four continents, with 1,500 staff.

The&Partnership is backed by WPP, the world’s largest communications agency network, which is both a partner and a significant minority shareholder.