Company lists · Data refreshed September 2026
Top 25 Network infrastructure software companies based in the United Kingdom
RevenueBase identified 138 network infrastructure software companies headquartered in the United Kingdom as of September 2026 and tracks 8,455 professional contacts across them, including 4,093 with verified work emails and 644 with mobile numbers. London is the largest hub.
This list covers network infrastructure software companies headquartered in the United Kingdom, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, how directly it supports the match, and when it was last checked. Data refreshed September 5, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest network infrastructure software companies based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 6,233 | ||||
“Colt Technology Services (Colt) is a global digital infrastructure company which creates extraordinary connections to help businesses succeed.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 2 | WHP Telecoms LimitedStrong evidence | 519 | |||
“WHP is one of the UK's leading suppliers of network infrastructure services.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 3 | MagdaleneIndirect evidence | 273 | |||
“Magdalene provides comprehensive independent solutions which address the individual needs of our customers throughout the Telecommunications Industry.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 4 | TechnetixStrong evidence | 190 | |||
“Technetix provides critical broadband infrastructure for network operators globally.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 5 | 134 | ||||
“The networks of the future are here.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 6 | Switchshop LimitedPartial evidence | 79 | |||
“Switchshop is a specialist designer, installer and provider of IT network equipment solutions and one of the UK's leading resellers of networking hardware.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 7 | 76 | ||||
“ISG Tech is a market-leading provider of services for the design, deployment and management of enterprise network connectivity with over 35 years of experience.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 8 | Leviton Network Solutions EuropeStrong evidence | 63 | |||
“Leviton Network Solutions Europe supports commercial and residential networks with high-performance network infrastructure.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 9 | MLR Networks LTDStrong evidence | 53 | |||
“We are an IT network infrastructure managed services provider delivering enterprise networking, wireless networks, structured cabling and security solutions to customers across…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 10 | 43 | ||||
“At Borwood, we believe that seamless, always-on communication is the foundation of global business success.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 11 | Updata InfrastructurePartial evidence | 42 | |||
“Updata Infrastructure part of Capita plc, is a pioneering connectivity services integrator.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 12 | Telelink Infra Services UKPartial evidence | 35 | |||
“Telelink provide the critical infrastructure that we all take for granted but has a major impact on our day-to-day life.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 13 | SDU TelecomsPartial evidence | 32 | |||
“SDU Telecoms, founded in 2017 by Catalin Felecan, is a leading provider of telecom infrastructure services across London and the UK.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 14 | 29 | ||||
“4MS specialise in networking, cyber-security and telecoms technical services.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 15 | 25 | ||||
“Connectivity is the foundation of the modern world.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 16 | The FND GroupStrong evidence | 25 | |||
“We deliver impactful network infrastructure engineering solutions, driven by innovation and insights.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 17 | Horsebridge Network SystemsStrong evidence | 24 | |||
“As one of the UK’s leading network infrastructure providers, Horsebridge Network Systems operates a market leading Network as a Service solution (NaaS) and proudly to be support…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 18 | IKM Network Communications LTDStrong evidence | 21 | |||
“IKM Network Communications is a leading provider of cutting-edge IP network infrastructure systems.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 19 | 18 | ||||
“DS Technologies is a network and infrastructure hardware solutions provider offering hardware, advice and maintenance.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 20 | 11 | ||||
“DrayTek UK has marked a fast and steady growth to become a leading manufacturer of business class broadband and networking solutions.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 21 | Structured Networks TechnologyPartial evidence | 10 | |||
“Established in 2003, Structured Networks provides a comprehensive range of services for the design, deployment and support of enterprise network connectivity.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 22 | Rapier Systems LTDStrong evidence | 10 | |||
“Established in 2003, Rapier Systems are expert in delivering network infrastructure solutions.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 23 | 10 | ||||
“Since 1994, MarQuest has provided expert consultancy services, delivering tailored IT infrastructure solutions that enhance network reliability, security, and visibility for…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 24 | 10 | ||||
“In today’s increasingly complex Networks, IT infrastructure and Services, business critical operations cannot rely on Human Intelligence alone.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 25 | Nics LTD Network Infrastructure And Computer Services LimitiedPartial evidence | 10 | |||
“Products and Services All NICS Ltd services can be offered for both business and domestic customer: Network Services • Network planning and design – New installations or upgrades…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 138 network infrastructure software companies based in the United Kingdom
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Network infrastructure software companies based in the United Kingdom at a glance
As of Sep 5, 2026Companies by employee count
Verified emails by last verification
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among network infrastructure software companies, so some rows will be adjacent to the category rather than pure plays. The description and evidence rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in the United Kingdom whose own description of what they do matches “network infrastructure software companies”. Matching reads each company's description, not its industry code or its name.
- What we exclude
- Companies whose own description does not clearly place them among network infrastructure software companies, and records with no verified work email. Companies headquartered outside United Kingdom are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and an evidence rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 4,093 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 5, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Frequently asked
How many network infrastructure software companies are there based in the United Kingdom?
RevenueBase identified 138 network infrastructure software companies headquartered in the United Kingdom as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Colt Technology Services, headquartered in London, tops this list with the largest team on record.
Which city has the most network infrastructure software companies?
London leads with 22 headquartered companies, followed by Basingstoke (2) and Bournemouth (2).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 4,093 verified decision-maker contacts tracked across these 138 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 5, 2026.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
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