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Portrait of Sammy Harris

Non-Executive Co-Chair, Stealth Labs

AI that can be audited, overseen and trusted.

I've spent a decade across the civil service, big tech and defence, working where AI decisions have to be defensible. In 2024 I co-founded Stealth Labs. Today I co-chair its board, and I advise on AI assurance, procurement and public sector technology.

Now

Non-Executive Co-Chair, Stealth Labs

Background

A decade across the civil service, big tech, defence, national security and government

Thinking about

AI assurance, government procurement, predictive intelligence, AI in defence and quantum

Open to

Non-executive, advisory and forum roles in AI, cyber and public sector technology

About

I'm drawn to the gap between what technology makes possible and what organisations actually do with it, and to the question of how you know an AI system is fit to be relied on.

I started in the civil service, running teams and budgets, and learned first-hand how hard it is for large institutions to adopt new technology. From there I moved into big tech, leading AI for regulated industries and working alongside defence, national security and government teams as they took their first real steps with AI.

In 2024 I co-founded Stealth Labs in Kent, an AI studio that builds production systems for UK government and enterprise. I've since stepped back from the day to day. As Non-Executive Co-Chair, I focus on long-term direction, risk and governance.

I also write about the distance between government AI ambition and procurement reality, and I've submitted written evidence to the House of Lords Science and Technology Committee.

I'm a Member of the Institution of Engineering and Technology (MIET).

I'm open to non-executive, advisory and forum roles in AI, cyber and public sector technology.

Principles

How I think about AI, oversight and evidence.

Evidence before assertion

Every output from an AI system should carry the basis it rests on. If an analyst can't see whether an answer comes from six observations or three hundred, they can't oversee it.

Let pilots fail

If every pilot succeeds, you aren't being ambitious enough. Fail cheaply, early and visibly, and report it honestly.

Procurement is part of the system

Good AI companies get locked out by how government buys. Fixing the buying process matters as much as fixing the technology.

Build the thing you oversee

Boards make better decisions when someone in the room has built, shipped and operated what is being discussed.

Stealth Labs

AI engineering for UK government and enterprise.

Born in Kent. Grown nationally. Kent is where it began, and where its roots remain.

Stealth Labs is an AI studio that builds production systems for UK government and enterprise, including multi-agent systems, agentic workflows and intelligent automation. It started in Kent in 2024 and now works with organisations right across the UK.

Visit stealthlabs.uk
Founded
2024, in Kent
Reach
National, across the UK
My role
Non-Executive Co-Chair since September 2026
Previously
Co-Founder and CEO, 2024 to September 2026
Focus
Long-term direction, risk and governance

Yochi

Predictive location intelligence with the evidence attached.

I designed Yochi to answer a hard question for defence users: where will an entity be, and how sure are we? It learns an entity's habitual pattern from its own history and returns a calibrated probability, with the observation counts behind every figure, so the answer can be audited under oversight. It ships as a single container and runs fully air-gapped.

Visit yochi.io

Writing

On government AI procurement, assurance and emerging technology.

The Government AI Gap

Writing on government AI procurement and why so much of it fails.

Most Government AI Pilots Should Fail

Government AI pilots are designed to succeed on paper while delivering nothing in practice. If your pilot portfolio has a 100% success rate, you're not innovating; you're paying for theatre.

I Used to Be the Buyer

Most AI vendors pitch fear, jargon and vague promises to government buyers. Having sat on the other side of the table, here's what actually gets a meeting, and what doesn't.

How Government Could Actually Buy Good AI

The UK procurement system locks out the best AI companies and rewards the slowest movers. How other countries do it better, and what reform could look like.

The Arrival of Quantum Technology

The UK's position in the global quantum race, and the case for aggressive funding, talent strategy and a serious commitment to leading it.

Get in touch.

For non-executive, advisory or speaking enquiries.