Most programmes are managed through plans, indicators and reports. But programmes succeed or fail for reasons those systems rarely capture: why a bednet goes unused, why a water point falls into disrepair, or why support never reaches the people who need it most.
By the time these problems show up in formal reporting, it is often too late to act. Colectiv helps teams see what is happening sooner, understand why, and make practical changes while programmes are still live.
Mosaic helps teams move through a simple cycle:
Focus on the behaviour, decision or delivery problem that matters.
Hear from the people closest to delivery and identify the barriers, drivers and system constraints shaping what happens in practice.
Turn insight into practical changes: easier user journeys, more compelling incentives, better targeting, and sharper messaging.
Gather feedback on what changes, refine the approach, and repeat.
You can send a WhatsApp message to almost anyone you’ve ever met in seconds. So why are most programme teams still waiting months for lagging indicators and static reports?
Colectiv Mosaic helps teams listen, analyse and adapt at the speed programmes actually move. It turns frontline and community feedback into:
So teams can zoom out to see the system, then zoom in on the behaviours and bottlenecks that matter most.

Mosaic is new, but the foundations are not. Colectiv builds on deep experience in applied behavioural science and impact evaluation. Our co-founder, Stewart Kettle, helped lead the international expansion of the Behavioural Insights Team, the original UK “nudge unit”, including trials with the World Bank and UNDP that improved tax compliance, health behaviours and service delivery across multiple countries.
That experience shapes how Colectiv works: rigorous, practical and focused on changes that can actually be implemented. Mosaic makes that discipline faster, lighter and more repeatable. Turning occasional research projects into regular learning cycles that support live programme decisions.
We work with implementers, technical partners and funders who need clearer visibility into how programmes are working in practice, and what needs to change.












Read more about our approach in practice.
If you need to understand why a programme is working, stalling or varying across contexts, we can help.
Talk to us