UK Sovereign Cloud for Defence and Critical National Infrastructure
Assurance, deployment, support and managed UK hosting, delivered by cleared UK specialists.
What Sovereign Cloud Means for Defence and CNI
Many providers describe any UK data centre as sovereign. For Defence and CNI organisations, a UK data centre only answers where your data is stored, while sovereignty also depends on whose laws your provider is subject to and who has administrative access to your environment. These three questions sit at the core of every Sovereign Cloud Assurance Review.
Data Residency
Where your data is physically stored and processed, including backups, logs and replicas, which often sit outside the primary region.
Jurisdiction
Which country's laws your provider is ultimately subject to. A UK region run by a provider with a US parent company can still fall under the US CLOUD Act.
Operational Control
Who administers your environment, where they're based and what clearance they hold, since privileged access is where sovereignty is most commonly lost in practice.
AWS, Azure and Google Cloud can be configured to a high level of sovereignty, which is enough for many workloads. Where a workload has to be fully sovereign, it needs infrastructure with no foreign ownership in the chain. Defended Solutions delivers both, so the choice is driven by what your data requires.
| FEATURE | SOVEREIGN HYPERSCALER | FULLY SOVEREIGN UK HOSTING |
|---|---|---|
| Platform | AWS, Azure or Google Cloud | UK data centres owned and operated by a UK company |
| Data Residency | Geo-locked to UK regions | UK only |
| Jurisdiction | Provider has a US parent, so a residual exposure to the US CLOUD Act remains | UK law only |
| Operational Control | Access restricted and keys held by you, with a residual risk of support from non-UK personnel | Managed by Defended Solutions, with no non-UK access |
| Best For | Workloads that need strong sovereignty alongside hyperscaler services | Workloads that must be fully sovereign |
If you’re not sure which level your workloads need, a Sovereign Cloud Assurance Review will establish it against your classification and obligations.
Who Needs Sovereign Cloud?
We work with the people responsible for protecting sensitive data and systems in Defence and Critical National Infrastructure. This typically includes:
Whichever role you hold, every engagement starts from the same place: a clear view of where your current environment stands.
Our Sovereign Cloud Services
Three stages, from an independent assessment of where you stand through to building and supporting your sovereign environment, with managed UK hosting for workloads that need to run on UK-owned infrastructure.
Stage 1
Assurance Review
An independent review of your current environment against the residency, jurisdiction and control requirements of Defence and CNI, giving you an evidence-based starting point before any money is committed.
Best forUnderstanding where you stand
Learn more →Stage 2
Deployment
Design and build of your sovereign environment around your data classification, regulatory obligations and operational constraints, including migration from existing infrastructure.
Best forNew builds and migrations
Learn more →Stage 3
Support
Ongoing monitoring, incident response, maintenance and reporting that keep your environment secure and compliant after go-live.
Best forOngoing compliance
Learn more →Managed UK Sovereign Hosting
For workloads that need to be fully sovereign. Your environment is hosted in UK data centres owned and operated by a UK company and managed by Defended Solutions, with no foreign jurisdiction and no non-UK access.
Best forWorkloads that need full sovereignty
Learn more →Not sure which service you need?
These questions should point you to the right starting point, however if your situation doesn’t fit neatly into one of these areas, get in touch for an initial consultation and our team will be happy to help.
Independent assessment with a formal report and recommendations
Designed, built and fully documented to your requirements
Monitoring, incident response, maintenance and reporting
Full sovereignty on UK-owned infrastructure, managed by Defended Solutions
If none of these fit because you’re still deciding whether sovereign cloud is the right move, our IT Strategy Consultancy can help you make that decision with confidence.
Why Defended Solutions
Generalist cloud providers can host your data in the UK, but very few can work inside Defence and CNI environments, hold the clearances those environments require, or evidence their work against the frameworks you’re assessed on.
If you’re assessing sovereign cloud partners, we can discuss your specific requirements on an initial scoping call.
Evidence in Practice: Establishing Cloud Governance for UK Defence.
See how we applied the Sovereign Cloud Assurance framework to help a major defence organisation secure their boundaries and maintain regulatory compliance.
Common Questions About Sovereign Cloud
Sovereign cloud is widely discussed and loosely defined, which makes it hard to compare providers or know what your obligations require.
Here are the questions we’re asked most often.
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A sovereign cloud is a cloud environment where your data is stored in the UK, governed by UK law and administered by people under UK control. All three need to be true, because a UK data centre on its own only covers where the data sits.
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Data residency describes where your data is physically stored, while data sovereignty describes whose laws govern it and who can access it. Data held in a UK data centre run by an overseas-owned provider has UK residency, but it may still be subject to that provider’s home jurisdiction.
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Private cloud describes who the infrastructure is dedicated to, while sovereign cloud describes who has legal and operational control over it. A private cloud can still be run by a provider subject to foreign law, so being private doesn’t make an environment sovereign.
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It can. The CLOUD Act allows US authorities to require US-based providers to hand over data in their possession or control, regardless of where it’s stored, so UK data held by a provider with a US parent company may fall within its scope. Keeping encryption keys under your own control in the UK reduces that risk, and hosting with a UK-owned provider with no US parent avoids it.
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To a high degree, yes. Environments on the major hyperscalers can be geo-locked to UK regions, with administrative access restricted and encryption keys held by you rather than the provider. What configuration can’t fully remove is the provider’s US parent company, which leaves a residual risk of support from non-UK personnel and exposure to the US CLOUD Act. Where workloads need to be fully sovereign, managed UK hosting removes both.
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That depends on your requirements. Where a high level of sovereignty is enough, we can deploy and manage your environment in UK regions of AWS, Azure or Google Cloud. Where workloads need to be fully sovereign, they’re hosted in UK data centres owned and operated by a UK company, with no foreign jurisdiction and no non-UK access.
Sovereignty requirements vary between organisations, and the right answer often depends on your data classification, your contracts and the frameworks you’re assessed against. Get in touch for an initial scoping call.
Sovereign Cloud for Defence, CNI and Commercial Organisations
Defence & National Security
SC/DV cleared sovereign cloud assurance, deployment and support for MOD bodies, primes and Defence suppliers working to JSP 453 and Secure by Design.
Explore Defence →Critical National Infrastructure
Sovereign cloud environments for CNI operators who need control over where operational data lives, who can access it and how resilience is evidenced.
Explore CNI →Commercial & Regulated Enterprise
UK data residency and access control for commercial organisations whose contracts, clients or regulators demand it.
Explore Commercial →Certified and Cleared for Defence and CNI Work
Every Sovereign Cloud engagement is delivered by SC and DV cleared UK specialists, under Defended Solutions’ ISO 27001, ISO 20000 and ISO 9001 certified management systems. We’re Cyber Essentials Plus certified and a G-Cloud 15 supplier, giving public sector buyers a direct route to procure our services.
The platform is operated exclusively by UK Sole Nationals, security vetted for privileged access.
Insights on Sovereign Cloud