UK Pitches Anthropic on London Expansion as Pentagon Feud Deepens

Next Step: Anthropic CEO Dario Amodei is scheduled to visit the UK in late May, when officials plan to formally present their expansion proposals.

As Washington treats Anthropic as a security liability, London is rolling out the welcome mat. UK government officials have urged Anthropic to expand in London, proposing to grow the AI company's office and secure a dual stock listing, the Financial Times reported. Anthropic's feud with the US Department of Defense has deepened the urgency on both sides.

Developed by staffers at the Department for Science, Innovation and Technology, the proposals come as Anthropic's relationship with Washington has rapidly deteriorated. After the company refused to drop its AI safety guardrails, the Pentagon pulled its contract and designated Anthropic a supply chain risk, a label typically reserved for foreign adversaries. UK officials have been closely watching those tensions, with the Financial Times reporting that courtship efforts intensified as the dispute deepened.

Britain emerges here as an opportunistic beneficiary of a Washington policy clash, competing to attract Anthropic on the strength of its ethical commitments rather than despite them.

London Mayor Sadiq Khan has personally intervened, pitching London as AI-friendly in a letter to Anthropic CEO Dario Amodei. Khan said that he believes London can provide "a stable, proportionate, and pro-innovation environment" in which advanced AI can flourish. Anthropic already employs around 200 people in the UK, including about 60 researchers, and appointed Rishi Sunak as a senior adviser last year.

UK Business Secretary Peter Kyle, who set up a Global Talent Taskforce to attract tech companies, has said the effort targets talent recruitment rather than just a stock listing. Officials noted that discussions build on a memorandum of understanding signed last year to collaborate on scientific progress and secure AI supply chains.

According to the Financial Times, officials have also outlined plans for a £40 million state-backed research lab focused on fundamental AI work. One government figure described a dual listing on the London Stock Exchange as "the dream," though the outcome remains unlikely. Officials are scheduled to present proposals to Amodei during a planned visit to the UK in late May, where he will meet policymakers and customers.

Taken together, the cross-government effort indicates that Britain views regulatory credibility, not just scale, as its competitive edge in attracting frontier AI companies. It positions the UK as a potential second home for Anthropic at a time when its primary market relationship is under legal strain.

Britain's opening stems directly from a sharp government-industry clash over AI safety. In January 2026, the Pentagon awarded Anthropic a major contract for frontier AI capabilities. Within weeks, talks collapsed over the company's refusal to grant unrestricted military access to its models, and the Defense Department branded Anthropic a supply chain risk, the first time a US company had received that classification.

Anthropic sued the Pentagon on March 9. Judge Rita Lin of the Northern California district court called the designation what "looks like an attempt to cripple Anthropic" and achieved a temporary court order blocking it. Despite that ruling, political tensions persist.

Claude remains the only AI model approved for use on Pentagon classified networks, giving the Defense Department a practical reason to maintain the relationship. Aalok Mehta, director of the Wadhwani AI Center at CSIS, argued that the Pentagon believes Anthropic has "the best product for military use" and is applying pressure accordingly. Meanwhile, OpenAI took a different route, revising its Pentagon deal to ban surveillance after facing employee and public pushback over defense AI access.

In contrast, London's AI sector has been expanding rapidly. In February 2026, OpenAI committed to making London its largest research hub outside the US as part of a Pentagon AI push involving multiple providers that accelerated competition for government and commercial footholds. Google DeepMind has been based in the city since its 2014 acquisition. According to the Financial Times, Databricks is also investing $850m in UK AI operations.

Anthropic's preparations for a potential initial public offering as early as this year make the dual listing proposal strategically timed. Alison Taylor, a clinical associate professor at NYU Stern School of Business, argued that Anthropic's bet on ethical positioning gives it "a hand in shaping regulation when it does happen," an advantage a deeper UK presence would reinforce. Anthropic has not publicly commented on the UK proposals.

Amodei's late-May visit will be the next decision point for both sides. If Anthropic accepts the proposals, its roughly 200 UK employees could anchor a materially expanded operation, and a London Stock Exchange listing would give British investors direct stakes in one of AI's widely watched companies. For the UK government, securing Anthropic would validate its pitch that responsible AI development and economic ambition can coexist, a message it wants heard before the regulatory environment hardens.