Artificial intelligence (AI) companies have leased more London office space in the first half 2026 than they did during the whole of last year, according to new data from Knight Frank, as the sector shifts from start-up and flexible workspace into large permanent headquarters and adds fresh pressure to the capital’s undersupplied prime office market.
Knight Frank has tracked 661,068 square feet of AI office take-up across London between January and June 2026, surpassing the 500,000 square feet recorded across the whole of 2025. Since the start of last year, AI companies now have committed to nearly 1.2 million square feet of London office space. If current trajectories hold, AI office take-up in London will have doubled from 2025 and quadrupled from 2024 in just two years.
The figures show that AI firms are scaling research, engineering, commercial and policy teams in the United Kingdom at pace. The average AI office transaction in first half 2026 was 22,795 square f
