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:

MOD Bodies and Defence Primes Needing cloud environments across Defence that meet JSP 453, Secure by Design and national security requirements, delivered by SC and DV cleared people.
Defence Suppliers Needing to meet the sovereignty and security obligations flowed down through prime and MOD contracts, with independent evidence for audit or tender.
CNI Operators Needing control over where operational data lives and who can access it across Critical National Infrastructure, with evidence that stands up to regulators.
CISOs and Security Leads Needing confidence that their environment's residency, jurisdiction and access controls stay defensible, with ongoing monitoring and support after go-live.
CIOs and Programme Directors Planning a migration or new build that has to meet sovereignty requirements from day one.
Organisations With UK Data Obligations Whose contracts, clients or regulators require UK data residency and clear control over who can access their data, across commercial and regulated enterprise.

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

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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

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Stage 3

Support

Ongoing monitoring, incident response, maintenance and reporting that keep your environment secure and compliant after go-live.

Best forOngoing compliance

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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

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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.

Do you need to know whether your current environment meets your sovereignty requirements?
YES
Assurance Review

Independent assessment with a formal report and recommendations

NO
Do you need to build a new environment or migrate an existing one?
YES
Deployment

Designed, built and fully documented to your requirements

NO
Do you need a live environment kept secure and compliant?
YES
Support

Monitoring, incident response, maintenance and reporting

NO
Do your workloads need to be fully sovereign, with no foreign jurisdiction or non-UK access?
YES
Managed UK Sovereign Hosting

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.

Cleared for Defence WorkDefence engagements are delivered by SC/DV cleared practitioners with direct MOD backgrounds, and Defended Solutions is a NATO and DoD supplier.
Procurement-ReadyListed on G-Cloud 15 and certified to ISO 27001, ISO 9001 and ISO 20000, with Cyber Essentials Plus, so buying from us fits within your existing procurement and supplier assurance processes.
Cross-Domain CapabilityWe design solutions that move data securely between classification levels, so sovereign environments connect to the rest of your estate without weakening the boundaries between them.
One Provider, End to EndFrom assurance through deployment, support and managed hosting, your environment stays with one specialist provider, so nothing is lost between stages and accountability never changes hands.

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.

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

SECTOR

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 →
SECTOR

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 →
SECTOR

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.

ISO 27001, ISO 20000, ISO 9001, G-Cloud 15 Supplier and Cyber Essentials Plus accreditations

The platform is operated exclusively by UK Sole Nationals, security vetted for privileged access.

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