Data guardian tells ministers to weigh trust and lock-in in NHS data platform decision

The National Data Guardian for Health and Social Care, Dr Nicola Byrne, has written to James Frith MP, the Minister for Health Innovation at the Department of Health and Social Care, on how public and professional trust should weigh in decisions on what happens next to the NHS Federated Data Platform (FDP) ². The advice, an 8-page document applying to England, was published on 12 October 2026 ².

What the advice says

Byrne sets out three areas for ministers ². The first is that trust from the public and from professionals should be given substantial weight when suppliers of systems that handle health and care data are evaluated ². The second is that decisions should rest on clear, objective evidence of what a system does and does not deliver, communicated openly, in a culture that accepts challenge ². The third is that concerns about interoperability, vendor lock-in and data sovereignty need answering, with open standards and open-source technology among the options to consider ².

The letter draws on research, the views of the public and of professionals, independent scrutiny, and the guardian's own continuing work with the FDP programme ². Byrne says she strongly backs what the programme is trying to achieve in using data better, and that her advice is meant to inform decisions on where the platform goes next, within her statutory remit, without recommending any particular contractual outcome ².

The exchange has already turned sharp. The HSJ reported on 13 October that the guardian warned public concern about the platform may undermine the quality of health data, and that Palantir responded by accusing her of being "captured by campaign groups" ¹.

What it means for the market

The advice is framed for decisions on the platform's next stage, and it lands with the health innovation minister ². Each of the three tests changes how a supplier is judged. Making trust a weighted criterion in supplier evaluation would bring reputation and public confidence into procurement scoring, beside cost and capability ². Naming vendor lock-in, data sovereignty and open-source options gives an opening to suppliers offering alternatives built on open standards, and puts the incumbent on notice to show its platform can work with others ².

For trusts and integrated care boards that use the platform, the warning on data quality reported by the HSJ is the practical risk: if patients hold back from sharing data, the value of the analytics built on it falls ¹. The public extract of the HSJ report does not give the evidence behind that warning or the full text of Palantir's response ¹.

Caveats

The guardian's advice is just that: it carries no power to decide the contract, and she states it does not favour any contractual outcome ². The published summary does not set out the research findings in detail or say when ministers will decide on the platform ².