We are Day One Strategy
Intelligence partner to the world’s leading healthcare brands since 2019
Why we’re here
We created Day One with a clear “aim”:
“To help healthcare teams make confident decisions at the pace their markets demand.”
Our story, from our founders
We’ve spent most of our careers in healthcare insights, and most of that time working together. By 2018, we were leading a large insights agency and feeling frustrated. We could see technology transforming other industries, while healthcare insight models were stuck in traditional ways of working. Research was often too slow and disconnected from commercial decision-making.
We imagined a different kind of insights agency – one designed around the combination of technology and human intelligence from the outset. In 2019, we built exactly that. We called it Day One: a reminder to ourselves to start each day as if it were our first. That same restless curiosity has driven everything we’ve done since.
Leading healthcare companies were quick to see the edge Day One could offer. We signed our first major client in our founding year, opened a US office in 2021, and now work with seven of the top 10 global pharma companies. We’re proud to lead a team of 60+ experts, and together we’re pioneering a new era of always-on Precision Intelligence.
Hannah Mann & Abigail Stuart
Founders, Day One Strategy

Why clients choose us
Hybrid thinking
We combine expert human judgement with purpose-built technology so teams can see what matters and act on it.
Trailblazer mindset
We move early and act fast – challenging assumptions and imagining what’s possible for our clients.
Proven in the real world
We’ve delivered more than 100 hybrid thinking use cases for leading healthcare companies (and counting).
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Team of experts
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Top global pharma companies as clients
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Offices, global reach
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Years pioneering hybrid thinking
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industry awards for our work
Our team
Day One is powered by brilliant people. Every member of the team brings experience, expertise and empathy to everything we do.
Our values
Awards & recognition
Memberships
Know what to do next
Let’s discuss how we can help you make better decisions, faster.