Company lists · Data refreshed September 2026

Top 23 Underground fiber optic contractors based in the United Kingdom

Name: Underground fiber optic contractors based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 197 companies tracked

RevenueBase identified 197 underground fiber optic contractors headquartered in the United Kingdom as of September 2026 and tracks 2,141 professional contacts across them, including 450 with verified work emails. London is the largest hub.

This list covers underground fiber optic contractors 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 19, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 19, 2026 86% judged on-target in blind review

197Companies

2,141Contacts tracked

450Verified emails

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The 23 largest underground fiber optic contractors based in the United Kingdom

Ranked by team size

Top 23 of 197 underground fiber optic contractors based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to underground fiber optic contractors: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Global Marine	Indirect evidence	Chelmsford, United KingdomHQ checked Sep 19, 2026	501-1,000	339 contacts →
	Indirect 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 19, 2026
2	Viberoptix	Indirect evidence	Coalisland, United KingdomHQ checked Sep 19, 2026	501-1,000	158 contacts →
	Indirect evidence “Viberoptix delivers frontline services to fibre networks providers across the UK and Ireland.” Source: RevenueBase Database · checked Sep 19, 2026
3	Cass Worldwide	Indirect evidence	Snitterfield, United KingdomHQ checked Sep 19, 2026	201-500	134 contacts →
	Indirect evidence “CASS (Cabling and Splicing Services) is a services driven telecommunications specialist business.” Source: RevenueBase Database · checked Sep 19, 2026
4	Rapid Response Telecoms LTD	Indirect evidence	Barnsley, United KingdomHQ checked Sep 19, 2026	201-500	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 19, 2026
5	Kcom Wholesale	Indirect evidence	Hull, United KingdomHQ checked Sep 19, 2026	501-1,000	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 19, 2026
6	SDU Telecoms	Indirect evidence	Chafford Hundred, United KingdomHQ checked Sep 19, 2026	51-200	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 19, 2026
7	NPS	Indirect evidence	Uk, United KingdomHQ checked Sep 19, 2026	51-200	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 19, 2026
8	Fibreray Group	Indirect evidence	Liverpool, United KingdomHQ checked Sep 19, 2026	51-200	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 19, 2026
9	The Fibre Group LTD	Partial evidence	Northampton, United KingdomHQ checked Sep 19, 2026	11-50	19 contacts →
	Partial evidence “Fibre Optic Installation & Testing Specialists - FTTP Surveyors - UG/OH Cable Installation - Fault Finding - Maintaining Communications Networkse” Source: RevenueBase Database · checked Sep 19, 2026
10	Computer Links	Indirect evidence	Livingston, United KingdomHQ checked Sep 19, 2026	11-50	15 contacts →
	Indirect evidence “We’re proven experts in IT infrastructure and we’re here to help you.” Source: RevenueBase Database · checked Sep 19, 2026
11	Ohmyfibre	Indirect evidence	Teesside, United KingdomHQ checked Sep 19, 2026	11-50	15 contacts →
	Indirect evidence “Nationwide telecommunication installation services-Civils -TRR/Cabling -Blowing Fibre -Overhead -Splicing and testing -Home installs -E2E Trunk -ERS” Source: RevenueBase Database · checked Sep 19, 2026
12	Core Connect Utilities	Indirect evidence	Alfreton, United KingdomHQ checked Sep 19, 2026	51-200	15 contacts →
	Indirect evidence “Your Trusted Partner for Seamless FTTP Network Solutions Core Connect Utilities Ltd is a company that specialises in providing high-quality fibre-to-the-premise (FTTP) solutions…” Source: RevenueBase Database · checked Sep 19, 2026
13	Fibre TEC Group	Partial evidence	Creswell, United KingdomHQ checked Sep 19, 2026	51-200	14 contacts →
	Partial evidence “Specialising in Fibre Optics Fibre Tec Solutions provides full turn key cabling, splicing and testing services to the telecommunications industry.” Source: RevenueBase Database · checked Sep 19, 2026
14	Fibretech UK LTD	Indirect evidence	Aylesford, United KingdomHQ checked Sep 19, 2026	11-50	14 contacts →
	Indirect evidence “Fibretech Uk Ltd is a telecommunications company based out of Kent, United Kingdom.” Source: RevenueBase Database · checked Sep 19, 2026
15	Quantum Comms Group LTD	Indirect evidence	Rugeley, United KingdomHQ checked Sep 19, 2026	51-200	14 contacts →
	Indirect evidence “We work on a range of contracts supporting blue chip organisations including BT, City Fibre, Vodafone and Highway England.” Source: RevenueBase Database · checked Sep 19, 2026
16	V25 Comms LTD	Indirect evidence	South Kirkby, United KingdomHQ checked Sep 19, 2026	51-200	14 contacts →
	Indirect evidence “Founded in 2011, V25AGE Comms Ltd has grown from a small family-run business into a leading name in the telecommunications sector.” Source: RevenueBase Database · checked Sep 19, 2026
17	RV Telecoms Limited	Indirect evidence	Brackmills, United KingdomHQ checked Sep 19, 2026	51-200	13 contacts →
	Indirect evidence “RV Telecoms are Midlands based specialists in FTTN working closely with the leading providers in the industry.” Source: RevenueBase Database · checked Sep 19, 2026
18	Fibre Optic Connections LTD	Partial evidence	Desford, United KingdomHQ checked Sep 19, 2026	11-50	12 contacts →
	Partial evidence “We offer comprehensive fibre optic network installation services to meet the needs of businesses, organizations, and government agencies.” Source: RevenueBase Database · checked Sep 19, 2026
19	CNS Networks Limited	Indirect evidence	Curdridge, United KingdomHQ checked Sep 19, 2026	11-50	11 contacts →
	Indirect evidence “At CNS Networks we specialise in providing top-quality fibre splicing solutions that ensure seamless connectivity and optimal performance for your network infrastructure.” Source: RevenueBase Database · checked Sep 19, 2026
20	Status Network Solutions LTD	Indirect evidence	Glasgow, United KingdomHQ checked Sep 19, 2026	11-50	10 contacts →
	Indirect evidence “Status Network Solutions has over 15 combined years of structured cabling experience.” Source: RevenueBase Database · checked Sep 19, 2026
21	TNS Comms UK	Indirect evidence	Crewe, United KingdomHQ checked Sep 19, 2026	11-50	8 contacts →
	Indirect evidence “Connectivity is mission-critical, and we build the infrastructure that makes it possible.” Source: RevenueBase Database · checked Sep 19, 2026
22	WRM Construction LTD	Indirect evidence	Leicester, United KingdomHQ checked Sep 19, 2026	11-50	7 contacts →
	Indirect evidence “A Full Turnkey provider to both Fibre and Wireless networks with extensive knowledge across all disciplines.” Source: RevenueBase Database · checked Sep 19, 2026
23	Infrared Limited	Indirect evidence	West Midlands, United KingdomHQ checked Sep 19, 2026	11-50	6 contacts →
	Indirect evidence “We are a telecommunication company.” Source: RevenueBase Database · checked Sep 19, 2026

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 contractors. 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 contractors.
Partial evidence: Its own public description names part of underground fiber optic contractors, 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 contractors. 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 23 of 197 underground fiber optic contractors based in the United Kingdom

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Underground fiber optic contractors based in the United Kingdom at a glance

As of Sep 19, 2026

21.0%Verified-email coverage

10.9Average contacts per company

11-50Median size (employees)

7.6%Largest-city concentration · London

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

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 197 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 contractors, 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 contractors”. 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 contractors), 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 contractors, 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, 450 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 19, 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

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 contractors, 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 contractors are there based in the United Kingdom?

RevenueBase identified 197 underground fiber optic contractors 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 contractors?

London leads with 15 headquartered companies, followed by Bristol (6) and Liverpool (6).

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 450 verified decision-maker contacts tracked across these 197 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 19, 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.