Best Enterprise Infrastructure Companies in Bristol, United Kingdom
The 33 best Enterprise Infrastructure companies in Bristol, United Kingdom in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: Immersive Labs.
Our analysis of 62 Enterprise Infrastructure companies
$9.2b in tracked funding; 96% of the stack-profiled cohort runs cloud-native; funding activity peaked in 2025.
Ranked: Best Enterprise Infrastructure companies in Bristol
| # | Company | Disclosed funding | Last round | Stage | Founder | Founded | Tech stack | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Immersive Labs Provider of cybersecurity training platforms for technical skill development exercises 67Tech top 28%Moat top 29%Funding top 32%Patents top 32% All 13 signals ▾Techtop 28% Moattop 29% Fundingtop 32% Patentstop 32% Innovationtop 35% Fin. healthtop 39% AItop 45% Producttop 45% Markettop 46% Talentbottom 49% Globalbottom 48% Growthbottom 42% Newsbottom 27% Tech: 45 technologies across 5/8 capability areas · Cloud: Amazon Alb, Amazon Cloudfront Moat: Editorial + unicorn rating 8/10 · IP moat: 12 patents rank vs industry peers · Fliar Intelligence Index 67/100 | $189M | 48 mo ago | Series C | James Hadley CEO of Immersive Labs | 2017 | WebflowApple iCloud MailSalesforce+27 | 12 patents Cybersecurity training platform resource and user account management systems | — |
| 2 | ClusterHQ Data management solutions for Docker | $15M | 140 mo ago | Deadpooled | Rob Haswell Co-Founder & VP Engineering | 2008 | — | — | — |
| 3 | Zeetta Cloud based network orchestration and management solutions | $6M | 89 mo ago | Series A | Tasos Vlachogiannis Co-Founder | 2015 | — | — | — |
| 4 | KETS Quantum Security Provider of quantum computing solutions for secure digital communication | $4M | 64 mo ago | Series A | Philip Sibson Co-Founder | 2016 | — | 7 patents Quantum random number generation and interferometric quantum key distribution hardware | — |
| 5 | CensorNet Provider of a cybersecurity platform that protects users, apps, and data | $3M | 56 mo ago | Series C | Timothy Lloyd Head of R&D | 2007 | — | — | — |
| 6 | OurPeople Workforce communication management software | $3M | 76 mo ago | Series A | — | 2015 | SentryZendeskApple iCloud Mail+24 | — | — |
| 7 | Gnodal Network switches for datacenter, high-performance computing and high-frequency trading environments | $2M | 222 mo ago | Deadpooled | Tony Ford Co-Founder & COO | 2007 | — | 72 patents High‑performance Ethernet switching and low‑latency data‑center networking hardware | — |
| 8 | Microcosm MFA identity authentication solutions provider | $2M | 219 mo ago | Funding Raised | Wayne Moore Founder | 1980 | Cart FunctionalityPHPBootstrap+5 | — | — |
| 9 | Orbital Chat Cloud-based communication software for remote workers | $207K | 64 mo ago | Seed | Ashley Porciuncula Co-Founder | 2020 | — | — | — |
Top 12 Enterprise Infrastructure companies in Bristol
#1
Series C · Bristol, England · founded 2017 · 69 employees$189.3Mraised▾
Provider of cybersecurity training platforms for technical skill development exercises. The platform offers hands-on labs, simulated cyber attack drills, and incident response training to improve security readiness. It provides tools for benchmarking team performance against industry frameworks and generating reports on organizational resilience. The system includes modules for application security, red team and blue team training, and artificial intelligence security practices. These resources allow security teams to practice detection and response techniques within virtual environments.
- Oct 2022Series C$66M
- Jun 2021Series C$75M
- Oct 2019Series B$40M
- Nov 2018Series A$8.3M
#2
Series C · Bristol, England · founded 2007 · 40 employees$3.1Mraised▾
Provider of a cybersecurity platform that protects users, apps, and data. The platform offers control and visibility over cybersecurity without needing multiple tools. It provides protection from threats, creates unified policies, and offers real-time visibility. The platform includes browse, posture, mail, and user control layers.
- Feb 2022Series C—
- Jul 2018Series B—
- Sep 2015Series A$3.1M
#3
Series A · Bristol, England · founded 2015 · 27 employees$5.7Mraised▾
Cloud based network orchestration and management solutions. It provides a core product of the networking operating system NetOS which offers USB like connectivity of network devices to the virtual network. The NetOS has an open source SDN controller which can control various network applications such as virtual PCE, infrastructure slicing, monitoring, and more.
- Jun 2019Grant (prize money)$498.3K
- Jul 2017Series A$2.4M
- Jun 2017Grant (prize money)$668.6K
- Apr 2017Grant (prize money)—
#4
Series A · Bristol, England · founded 2016 · 16 employees$4.4Mraised▾
Provider of quantum computing solutions for secure digital communication. The company has developed integrated photonics-based devices for quantum key distribution (QKD) and quantum random number generation (QRNG). Features include low power consumption, small footprint, lightweight, and scalable manufacturing. Additionally, it also provides consultancy and Joint Development Agreement (JDA) to SMEs.
- Jun 2021Series A$4.4M
- Dec 2018Seed—
#5
Deadpooled · Bristol, England · founded 2008 · 4 employees$15Mraised▾
Data management solutions for Docker
#6
Series A · Bristol, England · founded 2015 · 8 employees$3Mraised▾
OurPeople provides workforce communication management software. It allows users to communicate and connect with teams, share messages, engage and manage real-time responses. It enables users to create task-based reports, handle messages and share information about the projects. It helps fitness, hospitality, construction, retail, healthcare and manufacturing industries. Clients include DUNKIN, Baldor, Verizon and OrangeTheory. It offers a subscription-based pricing model.
- Jul 2020Series A$2M
#7
Seed · Bristol, England · founded 2020 · 2 employees$206.6Kraised▾
Cloud-based communication software for remote workers. It provides a platform to connect & collaborate with team members. Some of its features are video & audio calls, screen & document sharing, broadcast screens, bookmark links, live captioning, etc. It is a tool available on the subscription-based pricing model.
- Jun 2021Seed$206.6K
#8
Funding Raised · Bristol, England · founded 1980 · 7 employees$1.7Mraised▾
MFA identity authentication solutions provider. The product offered by the company includes Dinkey Pro, Copy Minder, SmartSign, IT Security hardware. The solutions offered include multi-factor authentication, OTP tokens, biometric flash drive, PKI tokens, user access control, software protection & licensing, and more.
- Aug 2008Grant (prize money)$870.9K
- Sep 2002Grant (prize money)$870.9K
#9
Deadpooled · Bristol, England · founded 2007 · 7 employees$2.2Mraised▾
Network switches for datacenter, high-performance computing and high-frequency trading environments
#10
Funding Raised · Bristol, England · founded 2001 · 13 employees—raised▾
Exacta Technologies provides a platform for server configuration & design. The product offered by the company is a platform and online configuration tool for an end to end design, build, logistics & support. The features of the product include evolution planning road-mapping, custom packaging & configurations, etc.
#11
Seed · Bristol, England · founded 2006 · 45 employees—raised▾
Cloud-based virtual SAN management software provider. Its product SvSAN is a software-defined storage solution designed to run on two or more servers. Its software solution synchronously mirrors storage across multiple servers eliminating single points of failure and deploys and configures across multiple and distributed sites. This helps in reducing the downtime.
- Jul 2024Seed—
#12
Seed · Bristol, England · founded 2020 · 2 employees—raised▾
Provider of a visual platform for building and deploying custom applications. The platform enables users to design applications visually, which are then translated into code. It supports the development of customer-facing applications, internal tools, and real-time dashboards. The platform facilitates application deployment and hosting within a secure environment.
- Mar 2021Seed—
Funding & investor landscape
Notable founders
Market landscape — 10 sub-themes by coverage
Share of Enterprise Infrastructure coverage by sub-theme.
Regulatory-risk over time rising
Funding & growth over time
funding rising · growth rising
What Bristol researches in cloud computing
- University of Bristol28
- Bristol Laboratories1
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.