The Open Rights Group published "Tech Giants and Giant Slayers" on 15 April 2026, arguing Britain's decade of US-tech dependency is a national security vulnerability 1. The report cites a Competition and Markets Authority (CMA) estimate that the UK wastes £500m a year on cloud services due to lock-in, switching barriers and project overruns 1. It flags the US CLOUD Act, the US federal law requiring disclosure of overseas data held by US-headquartered companies, as a mechanism that can compel UK data disclosure without UK consent, and points to Microsoft's documented shutdown of email services for individuals hit by ICC-related sanctions as concrete precedent 1. Palantir contracts, the report adds, are expanding rather than shrinking 1.
The CMA figure sits awkwardly next to the Sovereign AI Fund . In budget terms, the annual cloud waste matches the entire fund spent every year on lock-in alone, yet DSIT has not matched it with a single cloud-layer instrument. The CMA cloud investigation closed in July 2025 without DMA-equivalent enforcement powers, leaving the exposure untouched. Britain is solving the model layer at the margin while the cloud layer still bleeds at scale.
The CLOUD Act flag shifts the framing from commercial efficiency to legal exposure. ICC-sanctioned individuals losing Microsoft email access is not a hypothetical: it is precedent that a US statute can reach UK users through the infrastructure they already use, regardless of where the data sits. The report treats this as an analogue of the EU-level Draghi Report's 11.2% implementation rate after one year : stated ambition without the matching legal instrument. Britain is building a national champion upstairs and leaving the front door open downstairs.
