Best Data Center Infrastructure Companies in London, United Kingdom
The 42 best Data Center Infrastructure companies in London, United Kingdom in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: Nscale.
Ranked: Best Data Center Infrastructure companies in London
| # | Company | Disclosed funding | Last round | Employees | Founder | Tech stack | Web popularity | Recent signals |
|---|---|---|---|---|---|---|---|---|
| 1 | Backbone Connect Data center and telecommunication services provider | — | — | 48 48 → 63 (+31%) | — | PythonSalesforceAnimate.css+24 | Top 50M | — |
| 2 | BIS Colocation data centers | — | — | 3 | David Pyemont CEO | — | — | — |
| 3 | City Lifeline Data center and colocation services | — | — | 8 | Fraser Fisher CEO | — | — | — |
| 4 | Cloud Monkey IaaS cloud platform and disaster recovery as a service | — | — | — | Ross Cameron Co-Founder | — | — | — |
| 5 | Cloud One IT Infrastructure as a service and Data Center colocation services for SMEs | — | — | 3 | George Vassiliou CEO | — | — | — |
| 6 | Colt Data Center Services Datacenter colocation services provider | — | — | 5 | — | SitecoreSentryAlgolia+22 | Top 5M | 2 expansions |
| 7 | Comino Grando Mobile data center cooling solutions provider | — | — | — | Evgeny Vlasov Co-Founder & CEO | Webflowcore-jsjQuery+15 | Top 10M | — |
| 8 | Concertim Data center infrastructure management solutions | — | — | — | Michael Rudgyard Founder & CEO | — | — | — |
Top 12 Data Center Infrastructure companies in London
#1
Nscale 🦄Series C · London, England · founded 2023$5.5Braised▾
Provider of cloud infrastructure for artificial intelligence and computing workloads. Services include access to graphics processing units, virtual machines, and bare metal nodes for model training and inference. The platform offers container orchestration, batch scheduling, and storage systems designed for high-throughput data processing. Automated tools manage system health, resource allocation, and performance monitoring across the infrastructure. Users access the resources through application programming interfaces to support development, testing, and deployment of machine learning models.
- May 2026Conventional Debt$790M
- Mar 2026Series C$2B
- Feb 2026Conventional Debt$1.4B
- Sep 2025Series B$1.1B
#2
Seed · London, England · founded 2016 · 18 employees$4.4Mraised▾
Developer of artificial intelligence platform for data processing and analysis. The platform provides tools for automating complex data workflows. It enables users to process and analyze large datasets. The platform supports various data formats and integration with existing systems.
- Dec 2025Seed—
- Oct 2025Seed—
- Jan 2024Grant (prize money)$635.6K
- Jun 2023Seed$3.9M
#3
Acquired · London, England · founded 2014 · 13 employees$304.3Mraised▾
Operator of data centres engineered for advanced computing and artificial intelligence. These facilities provide secure and scalable environments for high performance computing infrastructure. Services include colocation and connectivity solutions designed to support intensive processing requirements. The infrastructure enables the hosting of accelerated computing hardware and cloud resources.
- Jan 2024Conventional Debt$263M
- Oct 2021PE—
- Feb 2019PE—
- Feb 2017Venture Debt$41.3M
#4
Seed · London, England · founded 2021 · 129 employees$801.4Mraised▾
Operator of data centers providing colocation, connectivity, and related services. The company delivers secure environments for IT infrastructure, ensuring uptime and performance. Services include colocation, various connectivity options, and support for data center needs. The business offers platforms and networks designed to support efficient operations.
- Apr 2023Conventional Debt$801.4M
- Oct 2021Seed—
#5
Acquired · London, England · founded 2007 · 27 employees$125Mraised▾
Operator of data centers providing infrastructure for high density computing. These facilities offer physical space, power, and cooling systems designed to support compute-intensive applications. Services include the design, construction, and management of digital infrastructure environments. The business maintains technical facilities to house server hardware and networking equipment for processing and storing digital information.
- Jun 2023Conventional Debt$100M
- Jun 2020Series D$27M
- Jan 2015Series D$98M
#6
Series A · London, England · founded 2022$16Mraised▾
Developer of AI-designed hardware solutions for data center infrastructure. The company provides system-level engineering to ensure product deployment and performance. It offers modular data centers, dual-use chillers, and direct-to-chip cooling solutions. The company’s products are engineered to meet performance requirements, reduce energy use, and optimize thermal efficiency.
- Feb 2024Series A$16M
#7
Acquired · London, England · founded 1997 · 764 employees$313.4Mraised▾
TelecityGroup is a provider of network independent data centres offering a range of flexible, scalable data centre and managed services. TelecityGroup specialises in the design, build, and management of highly connected and secure environments in which customers can house their technical, web and internet infrastructure. Each of its data centres acts as a connectivity and content hub facilitating the storage, sharing and distribution of data, content and media. TelecityGroup operates 24 network-independent data centres across seven European countries. The data centres are located in prime positions for commerce and connectivity including London, Amsterdam, Frankfurt, Paris, Stockholm, Manchester, Milan and Dublin.
- Mar 2015Grant (prize money)$149.3K
- Feb 2010Conventional Debt$313.3M
#8
Funding Raised · London, England · founded 1992 · 139 employees$240Mraised▾
Markley Group offers colocation and data center facilities. It offers data center with colocation space and high-density solutions, no markup on bandwidth. The data center is SAS to Type II compliant with more tha 40 carriers. The data center is redundant in power, cooling, and connectivity. The data center is located in Boston.
- Apr 2015Conventional Debt$240M
#9
Acquired · London, England · founded 2011 · 444 employees$105.7Mraised▾
Six Degrees Group offers integrated managed communication services like datacenter co-location, managed hosting, cloud computing, Leased lines & MPLS and IP Voice services for all business needs. It serves medium-sized enterprises and mid-market corporate customers operating in finance, legal, manufacturing, retail, digital and media, property, professional services, charities, leisure and entertainment, mainstream business, and public sectors.
- Jul 2015Conventional Debt—
- Jul 2012PE$8M
- Oct 2011PE$60M
#10
Acquired · London, England · founded 2005 · 23 employees$29.7Mraised▾
Provider of data center services
#11
Acqui-Hired · London, England · founded 2007 · 51 employees$8.2Mraised▾
Next Generation Data owns and operates data centers in the United Kingdom and internationally. Providing premium carrier- neutral customised data centre solutions, colocation & channel partner services. Claims to have created Europe’s largest Tier 3 data centre located between Cardiff and Bristol just off the M4, and is considered the no 1 'Tier 3' data centre outside of London
- May 2011Conventional Debt$8.2M
#12
Series A · London, England · founded 2013 · 2 employees$2.8Mraised▾
Bigstep offers Full Metal Compute Instances, Solid Storage (SSD), Load Balancer and Firewall. It claims to have better performance as the nodes are not virtualized and are configured for improved performance. It also is built for Big Data by making deployments for Hadoop and other technologies easy and built in features of redundancy and other orchestration features. Servers and parts are exclusively supplied by HP and backbone network is entirely based on Cisco.
- Jan 2016Series A$2.8M
Funding & investor landscape
Notable founders
Market landscape — 10 sub-themes by coverage
Share of Data Center 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.