London’s thriving digital economy has created high demand for trusted and scalable cloud infrastructure. From fintech startups in Shoreditch to government offices in Westminster, organisations across all sectors rely on expert cloud companies to host, manage, and secure their critical systems.
With a wide spectrum of services available ranging from IaaS and SaaS to hybrid cloud and DevOps cloud providers in London are central to the city’s technological leadership. These companies play a vital role in helping businesses grow, innovate, and stay resilient in an increasingly digital-first world.
Here are ten of the most reputable cloud companies in London, each offering tailored services, proven expertise, and a clear value proposition for businesses of all sizes
What Makes a Cloud Company Stand Out in London’s Tech Scene?
London’s reputation as a global tech powerhouse has seen a rapid increase in demand for scalable and secure cloud solutions. Cloud companies in the city are competing in an environment that values not only advanced infrastructure but also compliance, local data hosting, and flexible service models.
What sets standout providers apart is their ability to adapt and integrate services across public, private, and hybrid cloud models. The top performers offer end-to-end solutions ranging from consultancy and migration to ongoing management and support. They also invest heavily in talent and certifications, making them trusted partners for sectors like finance, government, and healthcare.
Which Are the Top 10 Cloud Companies Based in London?
1. Rackspace Technology – “Fanatical Support® Meets Enterprise Cloud”
Rackspace Technology has earned a strong reputation as one of the top cloud companies in London thanks to its robust multi-cloud management capabilities. From initial strategy through to deployment and ongoing optimisation, Rackspace supports businesses across the full cloud lifecycle. Its London team works with AWS, Azure, and Google Cloud to build bespoke, scalable cloud environments.
What truly sets them apart is their 24/7 “Fanatical Support®”, designed to reduce downtime and maximise performance. Their AI-powered tools further streamline cloud operations, helping clients manage costs and performance more efficiently. Rackspace’s enterprise-grade infrastructure and deep partner integrations make it a preferred choice for complex workloads and mission-critical applications.
Expertise
Specialises in full-spectrum cloud lifecycle management.
Ideal For
Enterprises seeking hands-off, fully managed cloud environments.
Pricing: Custom packages based on scope and provider.
- Website: https://www.rackspace.com/en-gb
- Phone: +44 20 8734 2500
- Address: Unit 2, Hyde Park Hayes, 6 Millington Rd, Middlesex UB3 4AZ, United Kingdom
- Email: legalnotice@rackspace.com
Review: ★★★★☆
“Our infrastructure went from chaotic to fully optimised within weeks—Rackspace delivered more than promised.”
2. Cloudreach (an Atos Company) – “Modernising the Cloud, One Stack at a Time”
Cloudreach is a London-based cloud consultancy focused on guiding businesses through complex multi-cloud transitions. As a strategic partner to AWS, Microsoft Azure, and Google Cloud, Cloudreach delivers tailored cloud architectures and transformation roadmaps. Their emphasis on DevOps, automation, and cloud-native development positions them as thought leaders in digital transformation.
Clients benefit from their agile delivery methodology and expertise in rapid deployments, making them ideal for large enterprises aiming to modernise legacy systems. Their consulting-first approach ensures each solution aligns with long-term strategic goals. As part of Atos, Cloudreach also brings global scalability with localised support from their London office.
Specialisation
Cloud-native transformation with DevOps and agile methodologies.
Recommended For
Enterprises migrating legacy systems to scalable cloud environments.
Pricing: Project-based pricing, tailored to complexity.
- Website: https://atos.net/en/
- Phone: +44 20 7183 3991
- Address: Saffron House, 6-10 Kirby St, London EC1N 8TS, United Kingdom
- Email: info@cloudreach.com
Review: ★★★★☆
“They helped us go serverless in under 90 days truly transformed how we operate.”
3. UKCloud – “Sovereign Cloud for the Public Sector”
UKCloud stands out as a specialist cloud provider focused exclusively on the UK public sector. With a strong presence in London and nationwide infrastructure, UKCloud offers sovereign cloud environments designed for government, healthcare, and defence. Their services meet stringent UK regulatory standards, and all data is hosted in UK-based data centres.
They prioritise transparency, affordability, and security, making them a preferred choice for high-compliance organisations. UKCloud also supports open-source technologies and promotes digital innovation in the public space. Their team’s deep knowledge of UK-specific challenges ensures a seamless experience for institutions with complex requirements.
Core Strength
Expert in UK-sovereign cloud and public sector compliance.
Most Suitable For
Government agencies and NHS trusts handling sensitive citizen data.
Pricing: Transparent pricing tailored for public sector budgets.
- Website: https://www.ukcloud.com
- Phone: +44 (0)1252 303300
- Address: 16 Laystall St, London EC1R 4PF
- Email: hello@ukcloud.co.uk
Review: ★★★★☆
“Their compliance-first approach is unmatched—critical for our healthcare data.”
4. Claranet – “Secure. Scalable. Cloud-Centric.”
Claranet is a trusted managed services provider offering cloud hosting, cyber security, and connectivity solutions across the UK. Headquartered in London, the company works with businesses of all sizes to implement cloud strategies tailored to industry needs. Their partnerships with AWS, Microsoft Azure, and Google Cloud enable multi-platform flexibility.
With a strong emphasis on network resilience and threat management, Claranet is often selected by organisations requiring high levels of performance and data protection.
Their solutions are particularly popular in the education, retail, and finance sectors, where scalability and compliance are essential. Claranet’s hands-on support and consultative approach make them stand out in the crowded cloud space.
Key Capability
Hybrid cloud delivery integrated with cybersecurity frameworks.
Best Matched To
Businesses needing both cloud flexibility and regulatory control.
Pricing: Based on service tier and support level.
- Website: https://www.claranet.co.uk
- Phone: +44 20 7685 8000
- Address: 6th Floor, 110 High Holborn, London WC1V 6JS, United Kingdom
Review: ★★★★☆
“We cut our cloud bills by 30% with better performance—Claranet’s team knows their stuff.”
5. Pulsant – “Empowering the Edge with Hybrid Cloud”
Pulsant delivers edge infrastructure and cloud hosting services designed for performance outside the capital’s core. With several regional data centres including London Pulsant helps businesses maintain local performance while scaling operations. Their hybrid and private cloud environments cater to mid-market businesses needing uptime, disaster recovery, and data sovereignty.
Pulsant’s emphasis on low-latency, edge-based design ensures that businesses across the UK can maintain rapid access to their systems and applications. Their high-availability network makes them a dependable choice for industries where performance and continuity are non-negotiable.
Notable Expertise
Edge computing and regionalised cloud infrastructure.
Well-Suited For
Businesses outside Central London looking for local cloud performance.
Pricing: Fixed monthly packages; custom for enterprise.
- Website: https://www.pulsant.com
- Phone: 0345 119 9911
- Address: WeWork, 8 Devonshire Square, London EC2M 4YF, United Kingdom
- Email: sales@pulsant.com
Review: ★★★★☆
“Great uptime and responsive support we’ve had zero disruptions since switching to Pulsant.”
6. iomart – “Always-On Cloud for the Modern Enterprise”
iomart is a well-established cloud services provider offering infrastructure, security, and managed solutions to UK businesses. With a robust data centre presence and support services available in London, iomart is especially known for its resilience and continuity planning.
They serve clients across industries such as law, finance, and healthcare where data availability and integrity are paramount. Their flexible hosting packages include private and hybrid cloud configurations, with options for backup, security monitoring, and virtual desktops.
iomart’s customer-centric approach and round-the-clock service make them a trusted partner for businesses managing sensitive or high-volume data.
Primary Focus
Resilient cloud infrastructure with emphasis on business continuity.
Perfect For
Enterprises seeking a hands-off, secure migration to private or hybrid cloud.
Pricing: Subscription and bespoke enterprise models.
- Website: https://www.iomart.com
- Phone: +44 (0)141 931 6400
- Address: 4th Floor, 30 Stamford Street, London SE1 9LQ
- Email: info@iomart.com
Review: ★★★★☆
“We sleep better at night knowing iomart manages our cloud infrastructure.”
7. ANS Group – “Accelerating Innovation Through Cloud & AI”
ANS Group is well-regarded for delivering cloud infrastructure alongside innovative application-focused solutions that support end-to-end transformation. Their London team is focused on helping businesses integrate Microsoft Azure, AWS, and DevOps tools into modern IT environments.
They stand out for their work in automation, AI, and security operations providing fully managed services across the stack. ANS supports a wide variety of industries and is well-known for its proactive engagement during every phase of cloud adoption. Whether it’s building new applications or reengineering old ones, ANS takes a partnership-driven approach that’s both strategic and technical.
Service Edge
Blends infrastructure with automation, AI, and application-level innovation.
Best Fit For
Organisations embracing digital transformation and innovation.
Pricing: Project-based with optional managed service layers.
- Website: https://www.ans.co.uk
- Phone: 0333 014 2999
- Address: Birley Fields, 1 Archway, Hulme, Manchester M15 5QJ
- Email: hello@ans.co.uk
Review: ★★★★☆
“Our DevOps pipeline went from concept to live in weeks ANS is transformational.”
8. Nordcloud (An IBM Company) – “Your Partner in Cloud-Native Evolution”
Nordcloud is a cloud-native services provider with a strong London presence, operating as part of IBM’s global technology ecosystem. The company excels in designing, implementing, and managing full-stack cloud environments across AWS, Azure, and Google Cloud.
Its consultants are known for creating cost-effective, secure, and agile infrastructures tailored to enterprise demands. Nordcloud combines strategic planning with engineering expertise to deliver scalable DevOps pipelines and modern cloud architectures.
Their cloud transformation frameworks suit organisations modernising legacy systems or aiming to standardise across multiple cloud platforms. As part of IBM, they bring the added advantage of integration with AI, analytics, and enterprise applications.
Core Advantage
Combines IBM’s power with Nordcloud’s agile cloud-native delivery.
Best Application
Enterprises with legacy systems needing multi-cloud orchestration.
Pricing: Custom pricing based on cloud ecosystem complexity.
- Website: https://nordcloud.com
- Phone: +44 20 3780 8992
- Address: IBM United Kingdom Ltd, 20 York Rd, London SE1 7ND, United Kingdom
- Email: info@nordcloud.com
Review: ★★★★☆
“We had full-stack clarity and DevOps maturity in months thanks to Nordcloud.”
9. ECS Digital (A GlobalLogic Company) – “Engineering the Future of Cloud”
ECS Digital is a London-based consultancy that brings modern cloud delivery and DevOps to the core of enterprise IT. They help businesses accelerate cloud adoption through agile transformation and automation. ECS is particularly skilled in containerisation, continuous integration/continuous delivery (CI/CD), and platform engineering.
Their work spans industries including finance, telecoms, and media where they help clients transition from monolithic systems to microservices and cloud-native applications.
With deep hands-on expertise, ECS offers a collaborative approach that empowers internal teams while modernising infrastructure. Their focus on cultural change as well as technology makes them a standout in the DevOps consultancy space.
Technical Strength
Deep DevOps integration for agile, scalable cloud environments.
Most Effective For
Companies modernising software delivery and legacy applications.
Pricing: Consulting and project-based models.
- Website: https://ecs.co.uk
- Phone: 020 7183 2172
- Address: 222 Bishopsgate, London EC2M 4QD
- Email: london@ecs-ecs.co.uk
Review: ★★★★☆
“We automated our entire release cycle—ECS was worth every penny.”
10. TIG (Technology Innovation Group) – “Agile IT Solutions Backed by Cloud Expertise”
TIG is a London-based managed cloud services provider known for delivering agile and secure IT environments tailored to both public and private sector organisations. With a consultative approach, TIG blends traditional infrastructure support with modern cloud services, offering solutions across Microsoft Azure, VMware, and private cloud environments.
Their services include cloud transformation, security, backup and disaster recovery, as well as virtual desktop infrastructure (VDI). What sets TIG apart is its strong emphasis on cyber resilience and compliance, particularly for businesses in sectors like finance, legal, and non-profit. The company has grown steadily due to its customer-first mindset, offering both proactive support and bespoke cloud architecture planning.
Technical Edge
Tailors cloud infrastructure with integrated security and VDI capabilities.
Best Suited For
SMEs and mid-sized enterprises requiring secure, compliant cloud environments.
Pricing: Flexible subscription models based on service scope.
- Website: https://www.tig.co.uk
- Phone: +44 (0)20 7766 5200
- Address: 63 Queen Victoria Street, London EC4N 4UA
- Email: info@tig.eu
Review: ★★★★☆
“TIG helped us migrate to the cloud with zero disruption and ongoing support that feels like an extension of our own team.”
Why Is London a Hub for Cloud Infrastructure and Innovation?
London’s economic strength, diverse business ecosystem, and regulatory stability make it a natural hub for cloud innovation. As the capital of the UK, it houses both multinational corporations and startups that demand secure and scalable IT solutions.
The presence of financial institutions and government bodies in the city creates a high demand for providers that can guarantee compliance, performance, and local data residency. Moreover, London’s access to top tech talent and its global connectivity ensure a continuous influx of innovation in the cloud computing space.
How Do These Companies Compare in Terms of Pricing and Support?
Support and pricing models can be a major deciding factor when choosing a cloud provider. Some companies offer fixed monthly packages, while others rely on custom quotes based on usage or project requirements. Here’s a general comparison:
| Company | Pricing Model | Free Trial | 24/7 Support | SLA Uptime |
| Rackspace | Custom + Subscription | Yes | Yes | 99.99% |
| Cloudreach | Custom Quoting | No | Yes | 99.9% |
| UKCloud | Fixed Government Rate | No | Yes | 99.95% |
| Claranet | Subscription + Custom | Yes | Yes | 99.9% |
| Pulsant | Fixed Pricing | No | Yes | 99.9% |
| iomart | Tiered Model | Yes | Yes | 99.9% |
| ANS Group | Custom Projects | No | Yes | 99.99% |
| Nordcloud | Project-Based Pricing | No | Yes | 99.9% |
| ECS Digital | Consultancy-Based | No | Yes | 99.9% |
| Veber | Fixed Monthly Rates | Yes | Yes | 99.95% |
Veber and Claranet are both suitable for small businesses thanks to their clear pricing structures and UK-based customer assistance. Larger organisations often prefer Cloudreach or Rackspace due to their scalable service models and dedicated account management.
What Should Businesses Consider When Choosing a Cloud Provider in London?
Choosing a cloud provider isn’t just about technology. it’s about finding the right partner for your business goals. Businesses should start by evaluating internal needs: whether they require basic hosting or advanced architecture design. Security and compliance should always be top priorities, especially for industries handling sensitive data.
Consider the provider’s customer support structure, service level agreements (SLAs), and history with businesses similar to yours. It’s also wise to explore their partnerships (AWS, Azure, Google Cloud), as these affiliations often reflect technical capability.
How Is the Future of Cloud Computing Shaping Up in London?
The future of cloud in London is exciting and transformative. We’re seeing a rise in AI-driven cloud operations, edge computing, and sustainable data centre practices. As more businesses adopt hybrid and multi-cloud models, providers will be expected to offer greater flexibility and platform interoperability.
Additionally, with the UK’s post-Brexit data strategy evolving, there is an emphasis on local data sovereignty, which will continue to shape how cloud services are delivered and regulated across the capital.
Conclusion
From large-scale enterprise solutions to flexible SME hosting, London’s cloud market offers something for every business. Companies like Rackspace and Cloudreach are ideal for organisations needing multi-cloud and enterprise-grade infrastructure. Meanwhile, providers like Veber or Pulsant are well-suited for small businesses and regional players seeking dependable UK-based hosting.
Your ideal provider will depend on your industry, regulatory needs, technical requirements, and budget but with the range of providers available, London offers exceptional options for any digital transformation journey.
FAQs About Cloud Companies in London
Why should London-based companies choose local cloud providers?
Local providers offer advantages such as lower latency, data residency compliance, and culturally aligned support, making them ideal for UK businesses.
Are these providers compliant with UK data protection laws?
Yes. Most of the leading cloud companies in London meet or exceed compliance standards like GDPR, ISO 27001, and Cyber Essentials.
Do these companies support hybrid cloud environments?
Absolutely. Many, including Claranet and iomart, specialise in hybrid and multi-cloud solutions tailored for complex IT setups.
Can small businesses work with these top providers?
Yes, some providers like Veber and Pulsant specifically cater to SMEs, offering simple and cost-effective hosting plans.
Is 24/7 customer support common among London cloud companies?
Yes. Most reputable providers offer round-the-clock support, although the quality and responsiveness can vary.
What industries benefit most from London’s cloud companies?
Industries such as finance, healthcare, legal, and government benefit the most due to their need for compliant, high-availability cloud infrastructure.