Redacted DHSC documents indicated the messages sent to former health minister Zubir Ahmed between July 2025 and March 2026 appeared to be from Palantir UK boss Louis Mosley.

Stuart Harvey, chief executive of data specialist Datactics, told HM: ‘The most important concern around digital sovereignty is about who has access to data and how this is regulated. GP records were explicitly ruled out of the FDP when the deal was announced, so the idea of extending the platform into them, even as a lobbying pitch, will worry patients and doctors who were promised otherwise. It doesn't give the Government much credibility that their policies are their own and aren't simply being handed to them by overseas-owned big tech.'

Highlighting over 100,000 people had signed a petition against the Palantir contract, Harvey added: ‘Public trust comes from privacy that is built into architecture, not from reassurance after the fact. It's about the culture at the heart of Government to make decisions that are in keeping with principles of privacy by design, sovereign by nature, with no risk of data boundaries being compromised by big tech ambitions.'

A Palantir spokesperson: ‘We've long argued that data sharing can improve the NHS, for patients and taxpayers, and that our software helps different NHS organisations to do that, while ensuring they maintain full local control over their data. We've also always been clear that it is for the Government to decide how they roll the software out. These exchanges reflect both of those points.'

The news came after the FT reported the Government was preparing to extend Palantir's £330mn health contract for a further two years while ministers draw up plans to potentially replace the US tech group with a UK alternative.