OpenAI and Anthropic expand in London amid global AI hiring push

London is becoming the overseas beachhead of the U.S. AI boom. Anthropic has secured new office space in the Knowledge Quarter with room for 800 people, while OpenAI has turned its London outpost into a growing hub for research, engineering and business development, signaling that the contest for AI dominance now runs through geography as much as model performance.

Anthropic said it already had more than 200 people based in London and described the city as one of its most important research and commercial hubs outside the U.S. That matters because the company is not just adding desks, it is building a larger operating base close to Europe’s customer network, where hiring engineers, sales teams and business-development staff can shape how quickly products move from labs into enterprise accounts.

OpenAI made London its first international office in June 2023, then said by July 2025 that its U.K. team had grown to more than 100 staff. Those employees work across research, engineering and go-to-market roles, supporting U.K. businesses, developers and startups. OpenAI also said the U.K. is one of its top three markets globally for paid subscribers and API developers, a sign that the country is not just a policy waypoint but a meaningful commercial market.

The British government has been trying to turn that commercial pull into long-term national advantage. Its AI Opportunities Action Plan, published on January 13, 2025, says Britain is the world’s third-largest AI market and sets out a strategy to expand growth, jobs, data centers and AI adoption. Anthropic’s selection in January 2026 by the U.K. Department for Science, Innovation and Technology to help build and pilot an AI assistant for GOV.UK, initially focused on employment support, shows how quickly commercial ambition and public-sector adoption are now overlapping.

The political stakes are rising in London as well. The Mayor of London has created a London AI and Jobs Taskforce, chaired by Baroness Martha Lane-Fox, to assess how AI is reshaping jobs and skills in the capital. That places labor-market pressure at the center of the debate, alongside office space, salaries and access to enterprise customers. For local startups, the arrival of better-funded U.S. rivals can tighten the market for both talent and premium workspace.

The result is a strategic power map in which London serves as both a talent magnet and a bridge to Europe. For U.S. AI firms, a strong London footprint buys more than visibility: it offers proximity to regulators, enterprise buyers and research communities, while giving the U.K. a claim on the next phase of AI investment.