London is rapidly becoming Europe's new epicenter for artificial intelligence. In recent months, OpenAI and Anthropic — two of the biggest players in the large language model space — have announced expansions into the British capital. They join Google, Meta, and startups like Wayve and Synthesia, which have been building their European bases in London for some time. Since the beginning of 2025, tech companies have leased over 93,000 square meters of office space in London. Why are American giants choosing the British capital, and what does it mean for the European — and Czech — tech market?
Talent as the Main Magnet
The main reason American AI companies choose London is people. Over the past decade, the British capital has built a deep and mature technology ecosystem that includes not only top universities like Imperial College London, University College London, and Oxford and Cambridge within reach, but also established tech companies and an army of qualified developers, data scientists, and researchers. "London has built a deep and mature tech ecosystem over many years. If you want to scale a company internationally, it's one of the few markets in the world that can support such growth," Mike Wiseman, head of campuses at British Land, told CNBC. Anthropic — the creator of the Claude model — will open its new office in the so-called Knowledge Quarter, the area around London's King's Cross. In recent years, this has transformed into a natural tech cluster. It is already home to Meta, OpenAI, Google DeepMind, the British autonomous driving startup Wayve, and London-based Synthesia, which generates videos using AI. Google is also moving part of its teams into a brand-new eleven-story building in King's Cross.A Financial Hub with Access to Capital
The second key factor is access to capital. London is one of the world's financial centers, and companies here have "ready access to venture, growth, and corporate development networks," Frederic Groussolles from executive search firm Heidrick & Struggles explained to CNBC. At a time when OpenAI is seeking tens of billions of dollars for further development and both companies — OpenAI and Anthropic — are actively considering going public, this is a crucial competitive advantage. A presence in London allows them to be closer to European investors, regulatory institutions, and to build relationships with European business.Who Is Expanding in London
According to data from real estate firm Knight Frank, cited by Bloomberg, large tech firms have leased over one million square feet (approximately 93,000 m²) in London since the beginning of 2025. That accounts for 7% of all commercial leases in the city during that period. Besides OpenAI and Anthropic, other American firms are expanding in London: - Google — moving teams into a new building in King's Cross, - Salesforce and Databricks — expanding their existing offices, - Cursor — the "vibe coding" platform, which announced plans to open a headquarters in London this summer. And it's not just tech firms. According to Knight Frank, the volume of space leased by American law firms grew by 75% in the last quarter of 2025. Major financial institutions such as BlackRock, Jane Street Group, and Bank of America are also actively seeking new space in the city.What It Means for Europe and the Czech Republic
The expansion of American AI firms into London has concrete implications for the rest of Europe, including the Czech Republic: Better availability of models in Czech. Claude from Anthropic and GPT from OpenAI both handle Czech very well — both models understand Czech texts, generate content in Czech, and handle more complex linguistic nuances. A stronger European presence of development teams means a better understanding of European users' needs and can further accelerate localization efforts. Proximity to European regulators. With the EU AI Act in effect, it is crucial for AI companies to have experts in the European time zone. A London office can serve as a bridge between American development and European regulation — though the complication remains that post-Brexit Britain stands outside the EU, and companies operating in both jurisdictions must comply with two regulatory regimes. Competition for talent. The growing demand for AI experts in London increases pressure on the labor market across all of Europe. For Czech companies, this means recruitment competition, but for Czech developers and researchers, it also means more opportunities — whether through relocation or remote work for global AI companies.Risks: Shortage of Offices and Infrastructure
Not everything is rosy. Available office space in premium locations is becoming limited. "AI firms are competing with traditional professional services and financial companies for a limited supply of top-tier office locations," warns Groussolles from Heidrick & Struggles. Similar concerns surround infrastructure. The rapid rise of AI firms means growing computational demands — data centers, energy infrastructure, and connectivity must keep pace with the rate of investment. Experts warn that the ability of infrastructure to support both employees and the growing computational requirements of models may not keep up with the pace of growth.London vs. the Rest of Europe
London is not the only European city aspiring to the title of AI capital. Paris, with Mistral AI and billions in AI research investments, is a strong competitor, as are Munich and Berlin. The Czech Republic is also engaging in the European tech ecosystem through the Czech AI Factory in Ostrava project and the Czech National Bank's machine learning initiatives. London's advantages remain English as the natural language of the tech world, concentration of capital, and a decades-long reputation as a global financial and business hub. The question remains whether post-Brexit London will be able to maintain its edge in the future — especially against cities like Paris, which benefit from a direct connection to EU institutions and the regulatory framework.What's Next
The developments in London point to a broader trend: artificial intelligence is no longer the exclusive domain of Silicon Valley. New hubs are emerging — London, Paris, Singapore, Tokyo — and the global distribution of AI talent and investment is gradually evening out. For the average user in the Czech Republic, the message is clear: models like ChatGPT and Claude will continue to improve, including in Czech. A stronger European presence of development teams means AI tools that better understand European needs — from language localization to compliance with European legislation. That's good news for anyone who uses AI every day.Why did OpenAI and Anthropic choose London instead of another European city?
London combines three key factors: access to talent (top universities, an existing tech ecosystem), access to capital (a global financial hub), and English as the primary language of the tech world. Cities like Paris, Berlin, or Munich have their own strengths, but none offers such a comprehensive combination of all three factors.
Will the expansion of AI firms into London affect the prices of ChatGPT or Claude?
Not directly — the prices of both services depend primarily on computational costs and the competitive battle between the companies. But indirectly, yes: a larger presence in Europe can reduce operating costs, and competition among AI service providers drives prices down. OpenAI is also reportedly considering lowering API token prices precisely because of competition from Anthropic.
How does Brexit affect London's position as an AI hub?
Paradoxically, in both directions. Outside the EU, London has greater regulatory flexibility — it doesn't have to automatically follow the EU AI Act. On the other hand, companies targeting the entire European market must operate parallel structures and comply with two regulatory regimes. For American AI firms, however, the English language, legal system, and favorable time zone are often more important than EU membership — which is why they keep heading to London.
