Best Cloud Infrastructure Companies in London, United Kingdom
The 64 best Cloud Infrastructure companies in London, United Kingdom in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: NexGen Cloud.
Our analysis of 50 Cloud Infrastructure companies
$46.5b in tracked funding; 100% of the stack-profiled cohort runs cloud-native; funding activity peaked in 2025.
Ranked: Best Cloud Infrastructure companies in London
| # | Company | Last round | Disclosed funding | Employees | Founder | Tech stack | Web popularity | Recent signals |
|---|---|---|---|---|---|---|---|---|
| 1 | 4sl Provider of business continuity, data protection, and cyber resilience services | — | — | 2 | — | — | — | — |
| 2 | AppLayer Cloud Technology | — | — | 11 | — | — | — | — |
| 3 | AppScore Enterprise cloud migration management software provider | — | — | — | Charlie Futcher Co-Founder & Director | — | — | — |
| 4 | BrightCloud Group Provider of contact centre and customer experience solutions and services | — | — | 1 | Alex Morrison Founder & CEO | — | — | — |
| 5 | Carrenza Cloud service provider blending IaaS & PaaS | — | — | 25 | Dan Sutherland CEO | — | — | — |
| 6 | Chill Code OpenStack software infrastructure for rapid application deployment | — | — | — | Kevin O Donnell Co-Founder | — | — | — |
| 7 | Cloud Directory cloud provider listings and comparisons | — | — | — | James Ketchell CEO & Founder | — | — | — |
| 8 | Cloud Monkey IaaS cloud platform and disaster recovery as a service | — | — | — | Ross Cameron Co-Founder | — | — | — |
Top 12 Cloud Infrastructure companies in London
#1
Series A · London, England · founded 2020 · 29 employees$76.7Mraised▾
HPC as a service platform. It is an infrastructure-as-a-service platform that offers GPU cloud computing power for virtual computing needs. It enables users to analyze data and detect anomalies in real-time. It caters its solutions to areas such as medical imaging, video rendering, cloud gaming, computer-aided engineering, and more.
- Apr 2025Series A$45M
- Jan 2025Series A$7.1M
- Dec 2024Series A$1.1M
- May 2024Series A$2.4M
#2
Series A · London, England · founded 2022$5Mraised▾
Cloud infrastructure security solutions. It is a cloud-native platform that generates and maintains custom decoy resources in cloud environments to optimize the intrusion detection capabilities. The platform creates canaries across cloud networks to identify and respond to threats.
- Mar 2026Series A$20M
- Jul 2024Seed$5M
#3
Seed · London, England · founded 2021 · 1 employees$4Mraised▾
Provider of an agentic orchestration platform automating software maintenance and modernization. The platform uses specialized AI agents to handle bug fixes and code migrations. It tracks, prioritizes, and refactors software to manage technical debt. The system supports continuous improvement from infrastructure to code. It assists with transformation, refactoring, and modernization of tech stacks. The platform also offers documentation and discovery features.
- Feb 2026Seed$4M
- Aug 2023Seed—
#4
Series A · London, England · founded 2024$30.6Mraised▾
Provider of AI agents that identify and resolve cloud vulnerabilities. It offers a platform that ingests vulnerabilities from cloud vulnerability scanners. AI agents investigate each vulnerability in the context of the environment, remove false positives, and identify high-risk vulnerabilities. The platform provides mitigation and remediation actions to owners, shrinking vulnerability backlogs and helping to identify critical vulnerabilities. It uses intelligent workflows to prepare immediate mitigations for critical vulnerabilities and provides remediation options to engineering teams.
- Jun 2025Series A$24.9M
- Sep 2024Seed$5.7M
#5
Seed · London, England · founded 2024$3.1Mraised▾
Provider of tools and deployment solutions for decentralized cloud infrastructure. The company enables businesses to deploy software on decentralized and traditional cloud infrastructure. It optimizes cloud resource allocation and provides multi-cloud management for enterprises. The company also facilitates fiat payments for blockchain adoption.
- Jun 2025Seed$3.1M
#6
Series B · London, England · founded 2015 · 17 employees$5.7Mraised▾
Provider of precision timing solutions and traceable time as a service. The company delivers timing accuracy for compliance, improved operations, and cost reduction. It offers plug-and-play timing solutions engineered to meet security and regulatory standards. The business provides various levels of support, from modular components to fully managed services. It ensures accurate time for data recording and synchronization across multiple sectors.
- Aug 2024Series B$200.5K
- Nov 2023Series B$2.7M
- Mar 2023Series B$73K
- Jul 2022Series B$3.5M
#7
Series B · London, England · founded 2015 · 81 employees$60.1Mraised▾
Cutover provides a platform for orchestrating the tasks and activities related to enterprise release management. The platform allows the users to list down the activities, identify the stakeholders for each activity, provides an aggregated view of all the events and allows the stakeholders to communicate with each other during the deployment process.
- Mar 2021Series B$35M
- Mar 2020Series A$374K
- Sep 2019Series A$17.3M
- Mar 2018Seed$970K
#8
Series A · London, England · founded 2018 · 9 employees$24.4Mraised▾
Cloud based platform offering subscription management software for businesses. It features solutions for subscription accounting, bookkeeping, tracking purchases and sales, vendor management, invoice management, tracking expenses, and more. It also offers an integrated risk management solution that helps companies that use cloud software monitor the obligations of the information security management system.
- Sep 2022Series A$20M
- Nov 2020Series A$3.4M
- Sep 2019Seed$813.9K
- Feb 2019Seed$110.5K
#9
Seed · London, England · founded 2009 · 28 employees$15Mraised▾
Strategic Blue are experts in cloud pricing. Cloud Options and Pricing Insights are financial cloud brokerage services optimising cloud billing. Through Cloud Options product, companies involve Strategic Blue in the billing cycle between Cloud providers and the consumers of cloud resources. Companies pay Strategic Blue in a form which is convenient to the company , Strategic Blue then pays the cloud provider in a form which is convenient to the cloud provider, eliminating any risks in the billing process.
- Nov 2021Seed$6.3M
- Feb 2020Seed$1.7M
- Nov 2017Seed$3.7M
- Mar 2016Seed$1.7M
#10
Acqui-Hired · London, England · founded 2010 · 130 employees$20Mraised▾
Cloud software platform for hosting providers. The OnApp platform brings together the cloud, dedicated servers, VPS, a global CDN, DNS, storage, load balancers, autoscaling, templates, and other IaaS capabilities in one fully automated control panel. Has more than 800 clients in 93 countries with offices in the US, Europe, and the Asia Pacific, as of September 2018.
- Dec 2018Grant (prize money)$869.6K
- Jun 2017Grant (prize money)$603.4K
- Jan 2017Grant (prize money)$642.1K
- Jul 2015Grant (prize money)$648.5K
#11
Seed · London, England · founded 2020 · 2 employees$3.5Mraised▾
Developer of a solution accelerating data processing within existing cloud platforms. The solution integrates with industry-standard big data analytics frameworks. It requires no application code changes or platform migrations for activation. The solution is designed to deliver hardware acceleration and reduced resource utilization. It is compatible with common data sources for big data storage.
- Jun 2023Seed$3.5M
#12
Acquired · London, England · founded 2021 · 1 employees$2.1Mraised▾
AI powered cloud infrastructure monitoring platform. It provides a platform for cloud native observability that integrates distributed traces, metrics, and logs. It provides a platform that automates the observability of serverless stack. It offers an AI copilot to debug and fix issues. Its features include notifications and alerts, bug tracking, integration with serverless stacks, and more.
- Jun 2023Grant (prize money)—
- Oct 2022Seed$138.6K
- Jul 2022Seed$1.8M
- Dec 2021Seed$158.9K
Funding & investor landscape
Notable founders
Market landscape — 10 sub-themes by coverage
Share of Cloud Infrastructure coverage by sub-theme.
Regulatory-risk over time rising
Funding & growth over time
funding rising · growth rising
How research on Cloud Computing in London is moving
A read on the academic research around Cloud Computing in London — which themes are gaining ground, the institutions and researchers driving them, and how the tone is shifting. Based on 246 papers.
- Imperial College London111
- University College London37
- Queen Mary University of London32
- King\'s College London18
- Brunel University of London12
- Operating system1→9
- Enhanced Data Rates for GSM Evolution1→7
- Server1→4
- Overhead (engineering)1→3
- Workflow1→3
- Operating system1→3
- Enhanced Data Rates for GSM Evolution3→4
- Aerosol1→12
- Key (lock)1→5
- Computer security2→3
Common questions
Riya reads income statements for fun. She covers the real money in a sector — revenue, growth, who actually earns — and never met a vague claim she didn't want a number for.