In March 2026, Amnesty International, Medact and dozens of global health organisations issued an urgent joint briefing demanding that NHS England cancel its contract with Palantir Technologies. At the same time, two senior Ministry of Defence engineers went on record to warn that Palantir poses "a national security threat to the UK." With over £670 million in UK government contracts, the American data company is now at the centre of the most significant data privacy controversy Britain has seen in years.
But here's what most coverage is missing: Palantir's expanding grip on public sector data should prompt every UK business to ask hard questions about their own data privacy posture.
What is Palantir and why is it trending?
Palantir Technologies is a US-based data analytics company, founded in 2003 and co-funded by Peter Thiel. It specialises in aggregating large datasets — originally for intelligence and defence applications — and is now expanding into healthcare and government administration worldwide.
In the UK, Palantir won the contract to power the NHS Federated Data Platform (FDP) in 2023, giving it access to patient-level health records across NHS trusts. More recently, in January 2026, the Ministry of Defence signed an additional £240 million contract with the firm for defence AI applications.
The controversy intensified in March 2026 when:
- Amnesty International joined Medact and 40+ health organisations demanding NHS contract cancellation
- BMA leaders called on doctors to refuse to use the Palantir platform
- MoD engineers leaked concerns about data sovereignty and the US CLOUD Act
The CLOUD Act problem — and what it means for your business data
The core legal concern is straightforward: Palantir is a US company, subject to the US CLOUD Act (Clarifying Lawful Overseas Use of Data Act, 2018). Under this legislation, US authorities can compel American companies to hand over data stored on their servers — even if that data is physically located outside the United States.
This matters for UK businesses for a critical reason: if your company uses any US-based cloud or SaaS provider, your data may be similarly exposed.
The Palantir situation is a highly visible example of a legal risk that applies broadly across US tech providers including AWS, Microsoft Azure, Google Cloud, and Salesforce. All are US-incorporated entities subject to CLOUD Act provisions.
For UK businesses, this creates real legal exposure:
- GDPR obligations: UK GDPR (now the UK Data Protection Act 2018) requires that personal data transferred outside the UK has equivalent protection. US CLOUD Act access may undermine this.
- Client confidentiality: Law firms, accountancies, and healthcare providers face professional obligations that could conflict with US government data access.
- Contractual liability: If your client data is accessed by a foreign government authority without your knowledge, you may face breach of contract claims.
What UK businesses should do right now
The Palantir controversy is a prompt for action, not panic. Here's a practical framework:
1. Conduct a data mapping exercise. Identify where your sensitive business data is stored and which providers process it. Flag any US-incorporated providers handling personal or commercially sensitive data.
2. Review your Data Processing Agreements (DPAs). Your DPAs with third-party providers should address how they respond to government data requests. If they don't, request an addendum or switch providers.
3. Assess your UK GDPR compliance gaps. The Information Commissioner's Office (ICO) has issued guidance on international data transfers. A qualified IT consultant or data protection officer can run a gap analysis against current ICO standards.
4. Consider data residency and sovereignty options. Several UK and EU-based cloud providers offer data residency guarantees, keeping your data subject only to UK law. For sensitive sectors, this may be worth the cost.
5. Train your team. Data breaches often begin with human error. Ensure staff understand what data they're authorised to share with third-party platforms — including those built on Palantir's infrastructure.
When to call in an IT specialist
The complexity of data privacy law — intersecting UK GDPR, CLOUD Act exposure, sector-specific regulations (financial services, healthcare, legal), and evolving ICO guidance — means this is genuinely not something most businesses can navigate alone.
An experienced IT security consultant or data privacy specialist can:
- Audit your current data infrastructure for CLOUD Act exposure
- Recommend alternative providers or technical mitigations (encryption, tokenisation)
- Help you draft or update your data privacy policies and DPAs
- Prepare you for potential ICO scrutiny
The Palantir saga is a reminder that data privacy is no longer a technical nicety — it's a boardroom issue. The NHS and MoD are discovering this the hard way. Your business doesn't have to.
On Expert Zoom, you can connect with verified UK IT specialists and data privacy consultants who can assess your specific situation — no long waiting times, no jargon.
Key takeaways
- Palantir's £670M+ UK contracts are facing intense legal and ethical scrutiny in March 2026
- The US CLOUD Act means US-based tech providers can be compelled to share your data with American authorities
- UK businesses using US cloud services face real GDPR and confidentiality risks
- An IT specialist can audit your data privacy posture and close the gaps before they become liabilities
This article is for informational purposes only and does not constitute legal or technical advice. Consult a qualified specialist for your specific situation.
