10 Best Cloud Security Companies UK 2026 | Microminder Cyber Security

This guide ranks ten cloud security companies operating in the UK, covering what each one offers, who benefits most from their services, and where their strengths lie. Cloud adoption keeps rising across British businesses, and so does the need for proper protection. Each profile below sets out the company's background, specialisms, and best-fit use case, giving you a direct way to compare options before you choose a provider.

Key Takeaways

Before you pick a cloud security partner, a few points are worth keeping in mind:

UK businesses increasingly rely on cloud services, which raises the stakes for proper security controls.
Outsourcing cloud security can save time and money while giving you access to specialist skills.
The right provider depends on your industry, company size, and the specific threats you face.
Certifications such as CREST and ISO 27001 offer a useful, checkable signal of a provider's competence.
Response time, openness, and ongoing support matter as much as the tools a provider uses.

The list below breaks down ten providers so you can compare them directly.

Why Cloud Security Matters for UK Businesses Right Now

Cloud computing now sits at the centre of how most UK businesses operate. Staff access company data from almost anywhere, on almost any device, and that shift has changed how organisations think about protection. Research from the UK Parliament's own POST briefing found that 89% of larger UK organisations use at least one cloud-based service, which gives you a sense of how far the technology has spread.

That popularity comes with a downside. You see, cloud systems remain a frequent target for attackers, and the cost of getting security wrong keeps climbing. Working with one of the cloud security companies in the UK covered in this guide can help you close common gaps before they turn into a breach, particularly if your business handles sensitive customer or financial data.

Picking the right partner takes more than a quick search, so we put together this list to save you the legwork. We looked at each firm's track record, service range, and reputation to help you shortlist a provider that fits your business.

What Is Cloud Security?

Cloud security covers the tools, policies, and practices that protect data stored in cloud environments from unauthorised access and attack. Getting familiar with the basics helps you understand what a provider's cloud risk management services actually cover and which parts of your business they will protect.

In simple terms, cloud security guards against threats that can come from outside attackers, careless insiders, or compromised third parties. A strong setup includes fast detection and response, so problems get caught and contained before they spread. The UK's National Cyber Security Centre publishes detailed cloud security guidance that sets out the principles a properly secured cloud service should meet, and it's a useful reference point when you're assessing a provider's claims.

A solid cloud security strategy also controls who can access your data and how it gets stored, and it encrypts communications to stop outside parties from intercepting them. That said, tools alone rarely solve the problem. Good providers also track user behaviour over time, which gives you visibility even when nobody is actively watching a dashboard.

Why Does Your Business Need Cloud Security?

Cloud services show no sign of slowing down, and more UK businesses move core operations onto cloud platforms every year. The government's most recent Cyber Security Breaches Survey found that 43% of UK businesses, roughly 612,000 organisations, identified a breach or attack in the past 12 months. That scale of risk is one reason so many businesses now look at managed security services rather than trying to cover every gap internally.

Several cloud service providers, including AWS, Google Cloud, and Microsoft Azure, dominate the UK market. These providers handle the infrastructure that runs the cloud, but they generally do not take responsibility for security within the cloud. That distinction matters because it means the client, not the provider, usually carries responsibility for protecting their own data and systems.

This is often called the shared responsibility model, and it leaves a gap that many businesses do not realise exists until something goes wrong. Closing that gap calls for a proper cloud security strategy, one that puts security controls, regular assessments, and compliance checks in place rather than assuming the cloud platform handles everything.

Why Outsource Your Cloud Security?

Handing cloud security to an outside provider can save your business both time and money. It frees your team to focus on other priorities, and it gives you some peace of mind knowing specialists are looking after your sensitive information. A security maturity assessment is often a useful starting point, since it shows you exactly where your current setup falls short before you commit to a provider.

Here is what to look for in a cloud security company:

Professionalism: Check the provider's team for relevant experience and recognised certifications that back up their claims.
Agility: A good firm adjusts its approach quickly as new threats appear, so you stay protected as risks change.
Transparency: The provider should be upfront about its services and stick to a clear plan, so you always know what is happening at each stage.
24/7 support: Round-the-clock availability matters, whether you are dealing with an active incident or just need advice.

None of these traits work in isolation. A provider with strong technical skills but poor communication can leave you just as exposed as one with weak defences, so weigh all four factors together before you commit.

10 Best Cloud Security Companies in the UK

The list below covers ten cloud security providers active in the UK market, along with a short look at what each one offers.

1. Microminder Cyber Security

Founded: 1984
Headquarters: London, England

Best suited for: small and large businesses across multiple sectors, including government and private organisations

Microminder is a UK-based cloud security provider founded in 1984, giving it over four decades in the industry. The firm holds CREST certification, an internationally recognised accreditation for penetration testing and cyber security service providers, and works across sectors including retail, finance, banking, healthcare, and government. Its team covers data encryption, file integrity monitoring, and automated malware detection, backed by 24/7 support.
Microminder's platform connects with other IT systems, which makes monitoring cloud security risk more straightforward day to day. The firm also supports compliance work tied to GDPR, NIST, and ISO/IEC 27001, the internationally recognised standard for information security management, among other frameworks. Client feedback on Microminder's own site highlights responsiveness and outcome-focused delivery on penetration testing and OT security engagements. If you want a closer look at what Microminder offers, you can book a free cyber security posture assessment with their team.

2. JAW Consulting UK

Founded: 2008
Headquarters: Bristol, with operations in Paddington, London

Best suited for: small to large global enterprises

JAW Consulting UK offers services that help businesses protect data and systems from cyber threats, with cloud security among their specialisms. The service includes data encryption, access control, and monitoring designed to guard against unauthorised access. The firm was awarded Approved IAPP (International Association of Privacy Professionals) Training Provider status in 2018, and its consultants hold a range of industry certifications, including CISSP and Cyber Essentials.

3. ANS Group Limited

Founded: 1996
Headquarters: Manchester, with offices in London and Glasgow

Best suited for: teams of ten or larger, including government bodies

ANS Group has spent over two decades supporting businesses across defence, emergency services, financial services, retail, transport, and hospitality. The firm's services span cloud computing, data centre solutions, cybersecurity, and managed services. ANS delivers end-to-end detection, response, and containment of cybersecurity threats from its own entirely UK-based Security Operations Centre, and it offers 24/7 support to clients.

4. CrowdStrike

Founded: 2011
Best suited for: small to large global enterprises

CrowdStrike offers cloud security services built on its Falcon platform, which applies AI and machine learning to detect and block cyber attacks as they happen. Endpoint protection sits at the centre of their offering, using behavioural analysis to spot malicious activity on devices. The company also covers cloud-based email security, identity protection, and vulnerability management, alongside consulting and incident response support for organisations planning their defences.

5. VMware SASE

Best suited for: small and large businesses

VMware SASE combines networking and security functions into a single cloud-native service. It covers firewall protection, data encryption, and identity and access management, all designed to guard cloud infrastructure and data from attack. A central dashboard with real-time alerts makes day-to-day monitoring easier to manage. VMware's broader focus centres on helping businesses modernise applications and adopt multi-cloud strategies while keeping security built into the process rather than bolted on afterwards.

6. Claranet

Founded: 1996
Best suited for: high-profile retail and finance-related industries

Claranet helps businesses worldwide improve efficiency and protect data through cloud computing solutions, alongside managed IT services, cybersecurity, and networking support. The firm also trains in-house teams, so clients can build internal security capability over time rather than relying solely on outside support.

7. Sophos

Founded: 1985
Headquarters: Abingdon, near Oxford

Best suited for: small and large businesses worldwide

Sophos, founded in 1985 by Jan Hruska and Peter Lammer, provides antivirus software, firewall protection, endpoint security, and encryption to guard against malware, phishing, and other cyber threats. The firm also runs threat intelligence and incident response services, helping businesses stay ahead of potential threats. Sophos now serves more than 600,000 customers worldwide and offers around-the-clock technical support.

8. Trend Micro

Founded: 1988
Headquarters: Tokyo, Japan, with an office in central London

Best suited for: small and large businesses worldwide

Trend Micro's portfolio of products and services includes antivirus software, anti-spyware protection, endpoint security, web security solutions, and data loss prevention tools. Its TrendLabs division also provides consultancy and managed services to help businesses strengthen their security posture. This global organisation serves businesses of all sizes and offers a customer support team available around the clock.

9. Sapphire.net

Founded: 1996
Best suited for: small and large businesses worldwide

Sapphire.net is a UK-based provider focused on protecting cloud infrastructure for both government and commercial clients. The firm's services include compliance scanning, vulnerability detection, and threat intelligence, alongside managed security services that help businesses keep their cloud infrastructure protected day to day.

10. Proofpoint

Founded: 2002
Headquarters: Sunnyvale, California, with UK operations
Best suited for: small and large businesses worldwide

Proofpoint's UK operations cover email security, threat protection, compliance, and archiving. Their products guard against phishing, spam, and malware, with compliance support built for regulated sectors such as healthcare and finance. Proofpoint's Cloud Access Security Broker service covers cloud data protection and identity and access management, helping organisations secure cloud-based systems and data.

Bottom Line

The ten providers above each bring something different to the table, so the right choice depends on your business size, sector, and specific risk profile. That said, checking a provider's certifications, support hours, and track record before you commit will save you trouble later.

If you want a closer look at how a cloud security partner could fit your business, get in touch with Microminder's team for a free consultation.

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