One Day Agency adds UK and 21 more countries to Keto-Mojo brief

Keto-Mojo has hired One Day Agency to run its UK marketing, as part of an expanded brief that also takes the agency into 21 further countries.

The extension follows encouraging early results in the six European markets the agency already looks after. The healthtech brand first appointed One Day in May 2026 to handle performance marketing in Germany, France, Poland, Ireland, Austria and the Netherlands.

Keto-Mojo makes blood ketone and glucose monitoring devices that help consumers understand and manage their metabolic health. Its international customer base includes people on ketogenic diets, people managing diabetes, those aiming to lose weight and people using biomarker data to guide health and nutrition choices.

Wider remit

The bigger brief combines paid search, paid social and creative development in a wider international strategy. One Day will work with Keto-Mojo's in-house marketing team to tailor campaigns for different audiences and look for opportunities in the new territories.

It draws on the agency's work in the first six markets, where campaigns use Google Search, Shopping and Performance Max together with Facebook and Instagram ads. Creative ideas and video are adapted for each country to suit local audiences while keeping the brand identity consistent.

One Day's senior paid search manager Daniel Scarffe said: “Our focus has been on identifying where the biggest growth opportunities are across different markets and building a strategy around them. We’ve combined Google Ads, paid social and creative to reach new audiences and drive sales, adapting our approach based on what’s working in each country.”

As the account grows, research into search demand and analysis of customer journeys will inform investment and campaign planning. The strategy also covers channel diversification and activity for individual markets around peak periods including Black Friday and January.

Alexandra Gonçalves, senior paid social media manager at One Day, said: “As we expand into new markets, our priority is to build on these learnings and develop a scalable growth strategy that remains responsive to the unique dynamics and opportunities of each market.”

The new work takes One Day beyond paid media management, as it adds creative production, strategic consultancy and ecommerce analysis to back the brand's growth abroad.

Keto-Mojo's head of marketing, Christi Terjesen, said: “As Keto-Mojo continues to expand internationally, it’s important that we balance global brand consistency with a localised approach to each market. One Day has demonstrated a strong understanding of our business and the nuances of performance marketing across Europe.”

She added: “We consider their team an extension of our own, and we’re excited to build on this partnership as we introduce Keto-Mojo to new audiences and accelerate growth across additional markets.”