LONDON, May 28 : London has reclaimed its position as Europe's leading technology centre, overtaking Paris thanks to increased investment in artificial intelligence and deep tech innovation, according to Dealroom's Global Tech Ecosystem Index 2026. • London's return to the top was driven by stronger venture capital investment and continued "unicorn" creation. Last year, London tech companies raised $17.7 billion, whilst the city is home to 138 unicorns - startups valued above $1 billion -