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Last updated: October 2026
Which AI security vendors have UK data residency?
In the public pages we reviewed on 1 October 2026, few vendors document a UK-hosted region for their AI security products. Some list UK options for wider platforms, several offer self-hosting that keeps data in your own environment, and many state no UK location at all.
This guide sorts 16 vendors by what each documents, explains what UK GDPR actually requires, and gives UK security and legal teams the questions to put to a vendor. It is not legal advice.
TL;DR: Key Takeaways
- UK GDPR regulates transfers, not storage. The ICO's restricted transfer test asks whether UK GDPR applies, whether you initiate the transfer, and whether the recipient is a separate entity outside the UK (ICO, 2026).
- A new test took effect on 5 February 2026. The Data (Use and Access) Act 2025 introduced a "not materially lower" protection standard for transfers (DLA Piper, 2026).
- EU adequacy for the UK runs to 27 December 2031. The European Commission renewed it on 19 December 2025 (Hunton, 2025).
- The UK-US Data Bridge dates from 12 October 2023. Recipients must be certified and opt into the UK Extension (White & Case, 2023).
- NCSC expects you to know where data sits. Cloud Security Principle 2 asks for the countries where data is stored and processed (NCSC, 2023).
At a glance: what 16 AI security vendors document
| What we found | Vendors |
|---|---|
| UK element documented, AI coverage unconfirmed | Microsoft, Wiz, Cloudflare, Netskope, Mindgard |
| Self-hosting or customer environment | Cisco, Check Point (Lakera), Pillar, SentinelOne, Noma, NeuralTrust (our product) |
| No public UK region found | Palo Alto Networks, CrowdStrike, Zscaler, Zenity, HiddenLayer |
"No public UK region found" means none appeared in the pages reviewed on 1 October 2026. It does not mean none exists.
What UK data residency means under UK GDPR
Residency is where data is stored. Sovereignty is which country's law governs it. Localisation is a legal duty to keep data in a country. UK GDPR imposes no localisation duty. It governs transfers, so what matters is who receives the data and what safeguard covers them.
According to the ICO (2026), a restricted transfer can rely on adequacy regulations, appropriate safeguards (the IDTA, the UK Addendum or binding corporate rules) with a transfer risk assessment, or an Article 49 derogation. Law firm Kennedys (2026) summarises the approach as focused on entities and who initiates the transfer, not on where data is stored.
Two route changes matter. The 2025 Act's "not materially lower" test commenced on 5 February 2026. And the UK-US Data Bridge could be exposed if the EU-US framework falls: Freshfields (2025) judged that the bridge surviving an invalidation is questionable.
Sector rules add pressure. For financial services, HM Treasury designated the first four critical third parties on 10 July 2026 (Bank of England, 2026). For central government, GOV.UK (2025) allows OFFICIAL data overseas where legal, data protection and security practices are satisfactory.
Which AI security vendors document UK data residency?
AI security tools inspect prompts, tool calls and outputs, which often contain personal data. Where that inspection runs is therefore a residency question.
How we compared
We read each vendor's public documentation, trust pages and datasheets on 1 October 2026 and recorded only what the page states. We did not test products, and we treated supplier-declared G-Cloud listings as weak evidence. Absence of a UK region is reported as "not found in pages reviewed".
UK element documented, AI coverage unconfirmed
| Vendor | What the pages say | Caveat |
|---|---|---|
| Microsoft Purview | UK is a listed Advanced Data Residency region | Paid add-on; Defender for AI residency not stated |
| Wiz | Platform options include the UK | AI-specific modules not confirmed |
| Cloudflare | Regional Services can limit decryption to UK data centres | AI Gateway compatibility unconfirmed |
| Netskope | UK NewEdge sites in London and Manchester | AI features not confirmed |
| Mindgard | Infrastructure "hosted in the United Kingdom and United States" | Does not say which data sits where |
Self-hosting or customer environment
| Vendor | What the pages say | Caveat |
|---|---|---|
| Cisco AI Defense | Application, model and agent data stay in the customer's environment | Management-plane metadata goes to Cisco |
| Check Point (Lakera) | Self-hosting keeps data in your infrastructure | SaaS hosting listed as EU, US and Singapore |
| Pillar Security | Platform runs inside the customer's environment | Trust centre not reviewed |
| SentinelOne (Prompt Security) | On-premises option, including disconnected sites | No UK mention |
| Noma Security | On-premises and SaaS deployment | No UK region found |
| NeuralTrust (our product) | Deployment in your own VPC, data centre or on-premises; hybrid data plane | Managed hosting is in the EU or US, per NeuralTrust; UK-only residency means self-hosting |
No public UK region found
| Vendor | Regions the pages list |
|---|---|
| Palo Alto Networks (Prisma AIRS) | Americas, EU-Germany, India, Singapore, Japan |
| CrowdStrike (Pangea AIDR) | US-1, US-2, EU-1 |
| Zscaler (AI Guard) | No residency statement found |
| Zenity | No hosting region stated |
| HiddenLayer | Hosted on AWS; no regions stated |
Sources for these tables are vendor pages reviewed on 1 October 2026 (see Sources). Some G-Cloud listings name the United Kingdom as a data location, but those are supplier-declared and do not prove a UK region for AI features.
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How to verify a vendor's data location claim
Ask for the answer in writing, per data type, not in a brochure. Prompts, outputs, logs, telemetry, embeddings and support access can each sit in a different place.
- Which region stores and processes prompts and outputs?
- Where do logs and telemetry go?
- Who are the sub-processors, and where are they?
- Can support staff outside the UK access data?
- Which transfer mechanism applies: the IDTA, the UK Addendum or the Data Bridge?
- Does the UK region cover the AI product, or only the wider platform?
Then check the answers against your transfer risk assessment, and re-run it when the vendor changes sub-processors.
AI security vendors and data location: the governance angle
Data location is one control among several. A UK-hosted gateway that lets an agent exfiltrate data through a tool call has met residency and failed security. The OWASP guidance on prompt injection (2025) ranks it first (LLM01) among LLM application risks, and injected instructions travel in documents and tool output wherever the model is hosted.
Residency also interacts with architecture. A data plane inside your own cloud account keeps prompts under your transfer analysis, while a vendor-hosted plane makes the vendor a recipient to assess.
How NeuralTrust addresses this
Agent Gateway (TrustGate) enforces policy between agents, tools and models, and NeuralTrust lists SaaS, hybrid and on-premises deployment on its AI Gateway page. Agent Runtime Security (TrustGuard) inspects prompts, tool calls and outputs as they happen. AI Red Teaming (TrustTest) probes for injection and leakage, and Agent Posture Management (TrustLens) maps which agents reach which data. NeuralTrust publishes its sub-processors and a data processing agreement that includes the UK Addendum. NeuralTrust confirms its managed service can be hosted in the EU or US and that it can run in your own infrastructure or on-premises, which is the route for UK-only residency. Ask us which deployment model meets your requirement and whether any telemetry leaves your environment.
Which should you choose?
| If you need... | Look first at | Why |
|---|---|---|
| UK-routed traffic for staff and agents | Cloudflare or Netskope | UK routing documented, but confirm AI coverage |
| UK-region data governance in Microsoft 365 | Microsoft Purview | Listed Advanced Data Residency region |
| Data that never leaves your cloud account | A self-hosted option, such as Lakera, Cisco, Pillar or NeuralTrust | You control location and transfer analysis |
| A named UK region for AI features | Ask each shortlisted vendor | None documented one unambiguously in our review |
| Agent security with deployment flexibility | NeuralTrust (our product) | Self-hosted for UK-only residency; managed hosting in the EU or US |
For the wider market view, see our guide to AI security platforms in the UK.
Conclusion
UK data residency for AI security vendors is rarely a simple yes. Few vendors document a UK-hosted region for AI products, several offer self-hosting, and UK GDPR cares about transfers more than storage. Ask each vendor where prompts, logs and support access sit, record the answers, and test them against your transfer risk assessment. Treat our table as a starting point, dated 1 October 2026.
Secure AI Agents with UK Data Requirements with NeuralTrust
Talk to our team about deployment options, runtime inspection and audit for your AI agents.
Related Comparisons
FAQs about UK Data Residency
1. Does UK GDPR require data to stay in the UK?
No. UK GDPR does not impose UK-only storage. It restricts transfers to recipients outside the UK unless a route applies, such as adequacy regulations, appropriate safeguards with a transfer risk assessment, or a derogation. Sector rules or contracts may still require UK hosting (ICO, 2026).
2. What is the difference between UK data residency and data sovereignty?
Residency is where data is stored, usually a contractual or technical choice. Sovereignty is which country's law applies to the data and who can compel access. Localisation is a legal requirement to keep data in a country. A UK-hosted service owned by a foreign parent can meet residency yet raise sovereignty questions.
3. Is the UK-US Data Bridge still valid?
We found no revocation as of 1 October 2026. It took effect on 12 October 2023 and covers recipients certified under the Data Privacy Framework with the UK Extension. A pending appeal against the EU-US framework adds uncertainty, so keep a fallback such as the IDTA or UK Addendum (White & Case, 2023).
4. Do AI security tools send prompts outside the UK?
It depends on the product and plan. SaaS tools may process prompts in the vendor's regions, such as the EU, US or Singapore, while self-hosted or private data-plane options can keep them in your own environment. Ask which region handles prompts, outputs, logs and telemetry separately.
5. Which AI security vendors offer UK-hosted regions?
In the pages we reviewed on 1 October 2026, Microsoft Purview, Wiz, Cloudflare and Netskope list UK options for wider services, and Mindgard says its infrastructure is hosted in the UK and US. Whether those cover AI security features is unconfirmed, so verify per product in writing.
6. Can a self-hosted AI gateway satisfy UK residency?
It can, because data stays in a UK region of your own cloud account or data centre. You still need to assess any metadata the vendor receives, such as management-plane telemetry, and any sub-processors involved in support or updates. Document those flows in your transfer risk assessment.
7. Does the Data (Use and Access) Act change international transfers?
Yes. Its transfer provisions commenced on 5 February 2026 and introduce a data protection test: protection abroad must not be materially lower than in the UK. Kennedys reports that the ICO's guidance does not replace the transfer risk assessment, so keep doing one (DLA Piper, 2026; Kennedys, 2026).
About the Author
Roger Howroyd is Head of Global SEO and AI at NeuralTrust, where he leads the company's search strategy across SEO, AEO, GEO, and LLM optimisation. He specialises in AI-powered search, content strategy, and SEM. Connect on LinkedIn.
NeuralTrust is the leading platform for securing and scaling AI agents. Named a Pioneer in the Gartner Emerging Market Quadrant for AI Application Security 2026, recognised across four Gartner Hype Cycle reports in 2026, and featured in the Gartner Market Guide for Guardian Agents 2026, the Gartner Market Guide for AI Gateways 2025 and the KuppingerCole Leadership Compass for Generative AI Defense 2025. Headquartered in Barcelona with offices in London and New York. ISO 27001 certified.
Sources
- ICO, A brief guide to international transfers, 15 January 2026.
- DLA Piper, UK commencement of the data protection provisions in the Data (Use and Access) Act, February 2026.
- Kennedys, The ICO's 2026 updated international transfer guidance, 2026.
- Hunton, European Commission renews UK data adequacy decisions, 19 December 2025.
- White & Case, UK-US Data Bridge: practical considerations for UK organisations, 2023.
- Freshfields, EU-US Data Privacy Framework survives its first judicial challenge, September 2025.
- NCSC, Cloud Security Principle 2: asset protection and resilience, reviewed 7 June 2023.
- Bank of England, UK financial regulators to begin overseeing critical third parties, 13 July 2026.
- GOV.UK, Multi-region cloud and software as a service, 5 February 2025.
- OWASP, LLM01: Prompt Injection, 2025.
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