<h1>UK-US Tech Prosperity Deal secures multibillion corporate pledges for AI, quantum, data centres, raises regulatory and security challenges</h1> A bilateral Tech Prosperity Deal announced during a US state visit commits major US tech firms and the UK to coordinated investment and infrastructure projects in AI, quantum and related fields, including a multibillion-dollar corporate pledge to fund data centres, supercomputing capacity and an AI Growth Zone. The pact raises cross-border commercial, regulatory and national-security issues including data access, export controls, critical-infrastructure protection, and workforce and subsidy conditions that may require legislative or regulatory action. Separately, local police made four arrests after an unauthorised projection on a royal property, indicating enforcement against public-order and property-related offences.