LONDON, UK – WW International, Inc., the global leader in science-backed weight management has appointed Omnicom Media agency Hearts & Science as media partner for planning and buying in nine markets across Western Europe, Australia/New Zealand and Canada.
The partnership sees Hearts & Science leading both brand and performance media, with the UK and Germany taking on the lead agency role and coordinating teams across Belgium, France, Sweden, Switzerland, The Netherlands, Canada, and Australia/New Zealand.
Garrett O’Reilly, CEO at Hearts & Science, said “Weight Watchers is one of those globally-renowned heritage brands that every agency wants to have on their books. Despite being a household name, it occupies a rare space in which we are able to drive broad awareness while also operating with highly targeted local precision across multiple territories. This is where the deep regional media insights held across the Hearts network — combined with our brand, data and performance expertise — will play a defining role.”
The first Hearts-led campaign went live over the crucial 2025 festive peak period and continues to scale across key New Year moments in early 2026.
Charles Quartey, VP, International Marketing at Weight Watchers, added: “We needed an agency who could hit the ground running ahead of the crucial New Year period. We had no hesitation in speaking to Hearts & Science first. I know from past experience working with the London and German teams that Hearts offers the right combination of speed, agility, brand and performance expertise to help us reach new and returning members and maximise the impact of our media investment.”
The Weight Watchers win comes on the heels of Hearts & Science taking on the TK Maxx European media account at the end of 2025, marking the second iconic global consumer brand to join the agency’s international roster since Omnicom acquired IPG in December, resulting in the integration of Omnicom Media Group and IPG Mediabrands as Omnicom Media.
