Posted: 21 Oct 2021 Resource Type: Research Report Download Back The UK’s tech ecosystem is one of the most competitive in the world. Its growing presence is a signal of the strength of research and development in the UK, as well as the depth of investment and collaboration frameworks present. The Square Mile and the City cluster of businesses is home to much of this, creating a supportive atmosphere for tech companies to grow, with unrivalled access to the market for mentorship, investment, and business development. ‘One of the things that makes London so attractive to tech firms is its advanced and interconnected business ecosystem. The clusters of expertise in fields such as banking, consultancy, law, insurance and accounting mean that all the services a new business needs are right here on the doorstep, along with a talented workforce drawn from across the globe.’ ‘The growth of tech in the City has enhanced and strengthened the other businesses here – who benefit from both the technological innovation and the influx of innovative thinking.’ Alderman William Russell Rt Hon Lord Mayor of the City of London Catherine McGuinness Policy Chair of the City of London Corporation $585bn Value of UK tech start-up and scale-up ecosystem 350 More than 350 start-up incubators and accelerators across the country 6,600 Tech companies in the Square Mile Share: Share to LinkedIn LinkedIn Share to X Share to Facebook Facebook Share to WeChat WeChat Share to WhatsApp WhatsApp Share to Email Email Download Related content News Sterling 20 Oct 2025 - 20 of Britain’s largest pension providers and insurers have launched Sterling 20, a new partnership to invest billions into UK infrastructure, innovation and renewable energy. Sterling 20 Research Report Finance for growth: a shared U.S./UK prosperity agenda Oct 2025 - Leading US and UK financial and professional services firms, via the British American Financial Alliance (BAFA) coalition, are urging both governments progress on the Transatlantic Taskforce for Markets of the Future. Finance for growth: a shared U.S./UK prosperity agenda Research Report The UK’s offer for asset managers and owners Oct 2025 - The UK is a global leader in asset management, with over £12tn in AUM and offers extensive scale with international reach, deep expertise, and diverse investment opportunities. The UK’s offer for asset managers and owners Research Report City statistics briefing Oct 2025 - The City Statistics briefing looks at the City of London's role as a global business hub for financial and related professional services. City statistics briefing