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Who is 39d?
39d is a UK-based consultancy that supports organizations with strategy, service design, and delivery for complex systems and public-interest challenges.
- Strategy and systems consulting for organizations working on complex, multi-stakeholder issues.
- Service and experience design for public services and mission-focused programs.
- Research, facilitation, and sense-making across policy, technology, and organizational change.
- Capability building, including tools, frameworks, and training for teams working in complexity.
- Advisory work with governments, public bodies, and purpose-driven organizations.
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39d operates as a specialist consultancy focused on complex systems, public-interest work, and missions that span multiple organizations, sectors, and disciplines.
The firm works with public bodies, governments, and purpose-oriented enterprises that need to design, test, and scale services or interventions in contexts where policy, technology, and human behavior intersect.
Its work typically sits at the intersection of strategy consulting, systems practice, and service design, with an emphasis on helping teams understand and act in complex environments rather than only optimizing existing processes.
39d’s offerings cover problem framing, portfolio and mission design, experimentation, and implementation support, often combining qualitative research, data-informed analysis, and participatory methods.
These services align with enterprise categories such as strategy and transformation consulting, service design and user experience for public services, and organizational capability building.
In practice, 39d engages with clients through workshops, research programs, co-design sessions, and ongoing advisory relationships, helping cross-functional teams align around missions, define testable interventions, and learn from real-world feedback loops.
The consultancy makes use of established systems-thinking concepts, portfolio approaches, and design-led methods to structure complex initiatives into manageable experiments and learning cycles.
Compared with traditional management consulting or pure UX agencies, 39d positions its work closer to long-horizon missions and systemic change, supporting clients that need to coordinate across multiple institutions and policy domains.
For enterprise and public-sector stakeholders, this places 39d in a directory category spanning professional services (consulting), strategy and systems advisory, and service design for complex and public-interest environments.
Our description of 39d. Updated February 2026.
