September 7, 2026, (Inside AI) — Matt Clifford, the chair of the UK's Advanced Research and Invention Agency (Aria), has stepped down after taking a full-time role at Anthropic, the San Francisco-based AI company behind the Claude chatbot.
The resignation follows warnings from senior MPs that the move created a "clear conflict of interest." Chi Onwurah, Labour chair of the Commons science committee, had written to AI minister Kanishka Narayan expressing disquiet.
Clifford announced his decision on Monday, saying he would remain until 6 November "with appropriate safeguards against potential conflicts in place."
"I have decided to step down to ensure my new role at Anthropic doesn't become a distraction from Aria's incredible work," he said.
Clifford's move highlights a revolving door between government and AI firms. Former prime minister Rishi Sunak has roles with Anthropic and Microsoft, while ex-chancellor George Osborne works for OpenAI.
Critics say such transitions risk weakening the government's precautionary stance on AI. Tom Brake, chief executive of Unlock Democracy, warned that transferring sensitive policy knowledge to private firms could undermine public interest.
Onwurah welcomed the resignation but said questions remained, including "how this situation arose, what conflict of interest assessments were undertaken and what safeguards are in place to protect confidence in Aria's governance."
Crossbench peer Beeban Kidron also welcomed the move. "If we are to rebuild trust in the government, we need to see a clear line between tech interests and those of citizens and the nation," she said.
The resignation comes as AI pioneer Geoffrey Hinton backed a private member's bill to prohibit artificial superintelligence, warning that losing control could "even lead to human extinction."
Clifford, 40, co-founded venture firm Entrepreneurs First and chaired Aria since 2022. He advised Keir Starmer on AI in January 2025 but left after six months for personal reasons.
He also helped organise the 2023 AI safety summit and co-created what became the AI Security Institute.
Revolving Door Raises Governance Questions
The UK's AI policy architecture has seen a steady flow of officials into industry roles. Nick Clegg, former deputy prime minister, held a senior position at Meta until 2025.
This pattern is not unique to the UK. In the United States, former White House tech advisers have joined major AI labs, prompting similar scrutiny from ethics watchdogs.
Conflict of interest rules for public officials vary widely. The Advisory Committee on Business Appointments (Acoba) reviews post-government jobs in the UK but has limited enforcement power.
Clifford's dual role at Aria and Anthropic raised specific concerns because Aria funds frontier research that could intersect with Anthropic's commercial interests.
Anthropic said Clifford would recuse himself from related business, but critics argued that recusal alone was insufficient for a chair with broad oversight.
Superintelligence Bill Adds Urgency
Hinton's statement supporting the private member's bill underscores the stakes. The bill, introduced on Tuesday, seeks to ban the creation of artificial superintelligence in the UK.
Hinton, a Turing Award winner, has repeatedly warned about existential risks from advanced AI. His support gives the bill significant scientific credibility.
The bill faces an uphill battle in Parliament, where AI safety legislation has been slow to materialise. The government has favoured voluntary agreements with industry over binding rules.
Clifford's departure may intensify calls for stricter post-government employment rules for AI advisers. Onwurah's committee is expected to examine the matter further.
Aria will now search for a new chair. The agency, modelled on the US DARPA, funds high-risk, high-reward research across science and technology.
Clifford's exit leaves a leadership vacuum at a critical time for UK AI policy, as the government balances innovation goals with safety commitments.
