Matt Clifford

Who they are

Matt Clifford is Chair of ARIA (the UK's Advanced Research and Invention Agency) — co-founded Entrepreneurs First in 2011, co-authored 'How to Be a Founder' with Alice Bentinck, and runs the 'Thoughts in Between' newsletter and podcast on AI, geopolitics, and progress.

Person

Matt joined ARIA in 2022 when it was being stood up from scratch as a newly established UK government agency — he came in as founding Chair. Before that, he spent over a decade as co-founder and CEO of Entrepreneurs First (EF), the talent investor he and Alice Bentinck launched in 2011, which grew a portfolio worth over $15 billion before he stepped back from the CEO role. His earlier career ran through McKinsey as a consultant/analyst, and his education spans Oxford for his undergraduate degree and MIT for graduate study, including programming languages and data analysis. The through-line is institution-building at the frontier: EF was a new model for turning individual talent into startups; ARIA is a new model for turning research ambition into invention; both bets are on unlocking human potential before the obvious path exists. He co-authored 'How to Be a Founder' with Bentinck — it won 2023 Startup Book of the Year. He also co-founded Code First Girls, a nonprofit teaching women to code, where he serves as non-executive director. His newsletter and podcast, Thoughts in Between (tib.matthewclifford.com), covers AI policy, geopolitics, scientific progress, and entrepreneurship; he's appeared at the World Economic Forum and London Tech Week, and he led UK government preparations for the 2023 AI Safety Summit — a signal that he is as comfortable in policy rooms as in startup ones.

Company

ARIA — the Advanced Research and Invention Agency — is the UK government's high-risk, high-reward research agency, modelled loosely on DARPA. Clifford joined as Chair at its founding in 2022. As of the most recent publicly available signals, Ilan Gur served as CEO and Clifford as Chair, though a leadership transition has been noted with Kathleen Fisher moving into a new chapter of ARIA's leadership. Clifford's role has straddled the board and active UK AI policy: he also sat as Vice Chair of the UK AI Safety Institute Advisory Board, and he led preparations for the 2023 AI Safety Summit — putting ARIA squarely inside the UK government's AI strategy machinery.

Market

ARIA operates in the publicly funded advanced research space, positioned as the UK's answer to DARPA — funding high-risk science and invention that markets alone won't back. Its competitive context is less commercial rivalry and more institutional: it sits alongside bodies like UKRI and the Turing Institute, and competes for talent and mandate influence with equivalent agencies in the US (DARPA, ARPA-E) and the EU. AI safety, semiconductor research, and emerging tech regulation are the current policy battlegrounds shaping its agenda.

Network

Clifford's closest professional anchor is Alice Bentinck — his EF co-founder, co-author, and successor as EF CEO. At ARIA, his direct peer was Ilan Gur as CEO, with Kathleen Fisher noted as a successor figure. Reid Hoffman led a $12.4 million investment in EF in 2017 and sits in Clifford's broader investor network, alongside Demis Hassabis as an EF-adjacent figure.

Alice Bentinck· Co-founder of Entrepreneurs First and Code First Girls; CEO of Entrepreneurs First; co-author of 'How to Be a Founder'
Ilan Gur· CEO of ARIA (direct peer)
Kathleen Fisher· Incoming/successor CEO of ARIA
Reid Hoffman· Led $12.4M investment in Entrepreneurs First; investor and mentor in EF network
Demis Hassabis· Investor and mentor in EF network

How they likely show up

Over a decade as CEO of EF, then a pivot to government/institutional Chair roles → he thinks in long institutional arcs and is comfortable playing a behind-the-scenes enabling role rather than always the frontman.
Led UK government preparations for the 2023 AI Safety Summit while simultaneously chairing ARIA → he operates across private, public, and policy domains in parallel, not sequentially.
Active newsletter and podcast ('Thoughts in Between') on AI, geopolitics, and entrepreneurship → he processes ideas publicly and responds well to substantive intellectual exchange.
Co-founded two distinct institutions (EF and Code First Girls) alongside a full consulting career at McKinsey → high agency, institution-building orientation — he doesn't just join things, he starts them.
Hybrid role type (Chair + advisor + author + podcaster) → he's comfortable holding multiple mandates at once and probably structures conversations around frameworks rather than pure operational detail.
Oxford undergraduate, MIT graduate with a focus on programming languages and data analysis → analytical foundation sits under the policy and entrepreneurship surface; he can go technical when pushed.

Conversation tips

→ Reference a specific edition of Thoughts in Between — he publishes carefully and will notice if you've actually read it versus name-dropped the title.
→ Ask about the ARIA model versus DARPA — he's thought hard about what a UK-native version of high-risk research funding should look like, and it's a topic with real texture for him.
→ Don't treat him purely as a 'startup accelerator guy' — since stepping back from EF's CEO role he has moved decisively into AI policy and government, and that's where his current energy sits.
→ Bring a specific point of view on AI governance or UK innovation policy — he engages with peers who have staked positions, not people looking to absorb his views passively.
→ If you've read 'How to Be a Founder', mention a specific chapter or argument — he co-wrote it with Bentinck and it won Startup Book of the Year in 2023.

Toolbox

Openers

Open on the 2023 AI Safety Summit — he led UK government preparations for it, which means he was inside the room where the UK staked its claim as a global AI governance venue. Ask what that process actually looked like from the inside.
Reference 'Thoughts in Between' by name and cite a specific theme — the newsletter runs across AI policy, geopolitics, scientific progress, and entrepreneurship; if you've engaged with a specific angle, say so. He'll know immediately whether you've done the work.
Bring up the EF model directly — he co-founded Entrepreneurs First in 2011 around the idea that the talent comes before the company, not after. That's a contrarian bet that took over a decade to validate; there's a lot of story in how he held conviction on it.

Discovery questions

What did designing ARIA from scratch teach you about what government-funded research agencies get structurally wrong — and what does ARIA do differently?
Entrepreneurs First's model bets that the best founders haven't yet found each other — after 15 years, where has that model surprised you, positively or negatively?
You've moved between operating CEO, government advisor, and institutional Chair roles — how do you think about what you can actually change from each of those positions?

Avoid

Don't treat AI safety as a settled or simple topic with him — he led the UK's 2023 AI Safety Summit preparations and sits on the AI Safety Institute Advisory Board, so he'll have granular, specific views that generic takes will immediately undercut.

Make it yours