US AI giants are flocking to London. Here's why
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US AI companies including Anthropic, OpenAI, Google, Cursor, Databricks, and others are rapidly expanding in London, signing 565,000 sq ft of office space in just the first four months of 2026 — nearly triple all of 2025. London's deep talent pool, financial networks, and AI cluster in the Knowledge Quarter are the primary draws. However, the influx is creating a talent squeeze for UK-based startups, which cannot compete with American firms' compensation budgets. London now hosts more AI companies with 50+ employees than San Francisco, raising the question of whether the UK will build its own AI industry or simply serve as a host for US giants.
