Company lists · Data refreshed September 2026
Top 25 Underground fiber optic cable companies based in the United Kingdom
RevenueBase identified 295 underground fiber optic cable companies headquartered in the United Kingdom as of September 2026 and tracks 3,606 professional contacts across them, including 760 with verified work emails. London is the largest hub.
This list covers underground fiber optic cable 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 22, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 underground fiber optic cable companies based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 339 contacts → | ||||
Partial evidence “Global Marine is part of the Global Marine Group, and is a market leader in subsea cable installation and maintenance solutions to the telecoms and oil & gas sectors.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 2 | 158 contacts → | ||||
Indirect evidence “Viberoptix delivers frontline services to fibre networks providers across the UK and Ireland.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 3 | 138 contacts → | ||||
Indirect evidence “Welcome to Nano Fibre UK!” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 4 | 134 contacts → | ||||
Indirect evidence “CASS (Cabling and Splicing Services) is a services driven telecommunications specialist business.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 5 | 79 contacts → | ||||
Indirect evidence “As a family run business for over 30 years, here at Rapid Response Telecoms we take great pride in our services being a tier 1 supplier to many prestigious Alt Nets.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 6 | 70 contacts → | ||||
Partial evidence “The Global Marine Group is a leading independent provider of submarine cable solutions offering a broad range of services including consultancy, installation and maintenance…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 7 | 63 contacts → | ||||
Indirect evidence “VEA Telecoms is a trading name of Vea Group LTD | Your Trusted Network Partner We deliver fast, reliable, and full turnkey telecom solutions to UK network providers.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 8 | 61 contacts → | ||||
Indirect evidence “KCOM has been a driver of innovation in the telecoms industry for more than a century; pushing the boundaries and pioneering new technology from our earliest days as a local phone…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 9 | 54 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 10 | 46 contacts → | ||||
Indirect evidence “Callan Connect is a Civil and Fibre Engineering company based in Aston, Birmingham specialising in the telecommunications industry.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 11 | 40 contacts → | ||||
Indirect evidence “KNTC builds infrastructure for telecoms to deliver next generation access and connectivity for voice and data communication services on behalf of consumers and businesses.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 12 | 36 contacts → | ||||
Indirect evidence “Delivering elegant, effective structured cabling solutions" Founded in 1988, HellermannTyton Data Ltd is an established and global leader in the provision of fibre network…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 13 | 33 contacts → | ||||
Partial evidence “Connecting Communities with Smarter Fiber Networks NetPMD Design & Integration helps telecom operators, ISPs, and municipalities accelerate their fiber network deployment and…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 14 | 32 contacts → | ||||
Indirect evidence “SDU Telecoms, founded in 2017 by Catalin Felecan, is a leading provider of telecom infrastructure services across London and the UK.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 15 | 31 contacts → | ||||
Partial evidence “DACC Europe is a leading structured cable and network infrastructure provider established in 1996 in Docklands London, enjoying year on year growth and fully manufacturer…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 16 | 30 contacts → | ||||
Indirect evidence “NPS are a network planning and implementation outsourcing enterprise based in Kent & the City of London.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 17 | 27 contacts → | ||||
Partial evidence “Founded in 2013, Fibrewave is a Fibre Optic installations company operating across the UK.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 18 | 22 contacts → | ||||
Indirect evidence “BV Comms are North West based telecommunications contractor, providing services all across the UK.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 19 | 22 contacts → | ||||
Strong evidence “Future proof with full fibre – where a fibre optic cable comes right into homes and businesses rather than to a street side cabinet.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 20 | 21 contacts → | ||||
Indirect evidence “Fibreray are FTTP turnkey specialists who deliver quality network solutions to excel your design and build requirements.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 21 | 19 contacts → | ||||
Strong evidence “Fibre Optic Installation & Testing Specialists - FTTP Surveyors - UG/OH Cable Installation - Fault Finding - Maintaining Communications Networkse” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 22 | 18 contacts → | ||||
Partial evidence “Sceptre Networking Ltd specialise in the installation, termination and testing of structured cabling, including; data, telephone cabling, conventional fibre and blown fibre optic…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 23 | 15 contacts → | ||||
Indirect evidence “At CityFibre, we’re building a new, intelligent, open-access fibre network, purpose built for the data age.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 24 | 15 contacts → | ||||
Indirect evidence “We’re proven experts in IT infrastructure and we’re here to help you.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 25 | 15 contacts → | ||||
Partial evidence “Networx3 Group Ltd Established in 2003, Networx3 Group Ltd is a UK-based infrastructure and technology services provider specialising in data networks, fibre optic systems, blown…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: underground fiber optic cable companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names underground fiber optic cable companies.
- Partial evidence
- Its own public description names part of underground fiber optic cable companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name underground fiber optic cable companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 295 underground fiber optic cable companies based in the United Kingdom
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Underground fiber optic cable companies based in the United Kingdom at a glance
As of Sep 22, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 295 companies.
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 underground fiber optic cable companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search 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 Smart Search, 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 “underground fiber optic cable companies”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names underground fiber optic cable companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among underground fiber optic cable 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 its RevenueBase Smart Search 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, 760 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 22, 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.
Underground fiber optic cable companies by metro
- Underground fiber optic cable companies in London27
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names underground fiber optic cable companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many underground fiber optic cable companies are there based in the United Kingdom?
RevenueBase identified 295 underground fiber optic cable 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?
Global Marine, headquartered in Chelmsford, tops this list with the largest team on record.
Which city has the most underground fiber optic cable companies?
London leads with 27 headquartered companies, followed by Bristol (11) and Birmingham (9).
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 760 verified decision-maker contacts tracked across these 295 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 22, 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 Smart Search, 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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