Company lists · Data refreshed September 2026

Top 25 Fiber optic installation companies based in the United Kingdom

Name: Fiber optic installation companies based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 15, 2026 815 companies tracked

RevenueBase identified 815 fiber optic installation companies headquartered in the United Kingdom as of September 2026 and tracks 20,230 professional contacts across them, including 7,457 with verified work emails. London is the largest hub.

This list covers fiber optic installation 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 15, 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 15, 2026 86% judged on-target in blind review

815Companies

20,230Contacts tracked

7,457Verified emails

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The 25 largest fiber optic installation companies based in the United Kingdom

Ranked by team size

Top 25 of 815 fiber optic installation companies based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 15, 2026. RevenueBase Smart Search rates how each company's information relates to fiber optic installation companies: 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	Colt Technology Services	Indirect evidence	London, United KingdomHQ checked Sep 15, 2026	5,001-10,000	6,233 contacts →
	Indirect evidence “Colt Technology Services (Colt) is a global digital infrastructure company which creates extraordinary connections to help businesses succeed.” Source: RevenueBase Database · checked Sep 15, 2026
2	Kelly Group	Indirect evidence	Wembley, United KingdomHQ checked Sep 15, 2026	1,001-5,000	1,053 contacts →
	Indirect evidence “Established in 1985 to support the emerging UK cable television market, Kelly Group has diversified to meet the needs of our clients.” Source: RevenueBase Database · checked Sep 15, 2026
3	Exponential-E	Indirect evidence	London, United KingdomHQ checked Sep 15, 2026	501-1,000	667 contacts →
	Indirect evidence “Innovation is at the core of Exponential-e, and has been since our inception in 2002.” Source: RevenueBase Database · checked Sep 15, 2026
4	ZEN Internet	Indirect evidence	Rochdale, United KingdomHQ checked Sep 15, 2026	501-1,000	521 contacts →
	Indirect evidence “Zen is a B Corp certified telecommunications and technology service provider in the UK.” Source: RevenueBase Database · checked Sep 15, 2026
5	WHP Telecoms Limited	Indirect evidence	Warrington, United KingdomHQ checked Sep 15, 2026	501-1,000	519 contacts →
	Indirect evidence “WHP is one of the UK's leading suppliers of network infrastructure services.” Source: RevenueBase Database · checked Sep 15, 2026
6	Indigo	Indirect evidence	Magor, United KingdomHQ checked Sep 15, 2026	201-500	470 contacts →
	Indirect evidence “Indigo engineers a digital future by designing, deploying, and supporting digital infrastructure for network owners and operators.” Source: RevenueBase Database · checked Sep 15, 2026
7	Comex 2000	Indirect evidence	Derby, United KingdomHQ checked Sep 15, 2026	501-1,000	367 contacts →
	Indirect evidence “Comex is an established major strategic partner of choice within the telecommunication sector, across the United Kingdom and Ireland, offering an end to end solution.” Source: RevenueBase Database · checked Sep 15, 2026
8	Global Marine	Partial evidence	Chelmsford, United KingdomHQ checked Sep 15, 2026	501-1,000	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 15, 2026
9	Interoute	Indirect evidence	London, United KingdomHQ checked Sep 15, 2026	501-1,000	296 contacts →
	Indirect evidence “Interoute is part of EXA Infrastructure, the largest dedicated digital infrastructure platform connecting Europe and North America, and owns kilometres of fibre network across 34…” Source: RevenueBase Database · checked Sep 15, 2026
10	Magdalene	Indirect evidence	St Ives, United KingdomHQ checked Sep 15, 2026	201-500	273 contacts →
	Indirect evidence “Magdalene provides comprehensive independent solutions which address the individual needs of our customers throughout the Telecommunications Industry.” Source: RevenueBase Database · checked Sep 15, 2026
11	Vorboss	Indirect evidence	London, United KingdomHQ checked Sep 15, 2026	201-500	262 contacts →
	Indirect evidence “We’re here to power the ambitions of London enterprises with a dedicated 100Gbps fibre network, managed IT and cybersecurity services.” Source: RevenueBase Database · checked Sep 15, 2026
12	Sudlows	Indirect evidence	Manchester, United KingdomHQ checked Sep 15, 2026	201-500	228 contacts →
	Indirect evidence “Sudlows is a multi-award winning Critical Infrastructures, Enterprise Services and Facilities Management specialist which provides a full range of technical services for…” Source: RevenueBase Database · checked Sep 15, 2026
13	Technetix	Indirect evidence	Albourne, United KingdomHQ checked Sep 15, 2026	51-200	190 contacts →
	Indirect evidence “Technetix provides critical broadband infrastructure for network operators globally.” Source: RevenueBase Database · checked Sep 15, 2026
14	Viberoptix	Indirect evidence	Coalisland, United KingdomHQ checked Sep 15, 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 15, 2026
15	Beacon Comms	Indirect evidence	Tavistock, United KingdomHQ checked Sep 15, 2026	201-500	151 contacts →
	Indirect evidence “Beacon Comms is the trading name of Beacon Communication Services Ltd.” Source: RevenueBase Database · checked Sep 15, 2026
16	Nano Fibre UK Limited	Indirect evidence	Bradford, United KingdomHQ checked Sep 15, 2026	201-500	138 contacts →
	Indirect evidence “Welcome to Nano Fibre UK!” Source: RevenueBase Database · checked Sep 15, 2026
17	Cass Worldwide	Indirect evidence	Snitterfield, United KingdomHQ checked Sep 15, 2026	201-500	134 contacts →
	Indirect evidence “CASS (Cabling and Splicing Services) is a services driven telecommunications specialist business.” Source: RevenueBase Database · checked Sep 15, 2026
18	Spitfire Network Services LTD	Indirect evidence	London, United KingdomHQ checked Sep 15, 2026	51-200	99 contacts →
	Indirect evidence “Spitfire Network Services is a UK-based, multi-award winning telecoms and ISP provider for businesses.” Source: RevenueBase Database · checked Sep 15, 2026
19	Waldon Telecom	Indirect evidence	West Byfleet, United KingdomHQ checked Sep 15, 2026	51-200	93 contacts →
	Indirect evidence “Providing high quality, dedicated telecom infrastructure services to Operators across the country.” Source: RevenueBase Database · checked Sep 15, 2026
20	Linbrooke Services LTD	Indirect evidence	Sheffield, United KingdomHQ checked Sep 15, 2026	201-500	89 contacts →
	Indirect evidence “We connect people, technologies and locations, enabling service providers, OEM's and internet service providers to deploy, scale, support and maintain network infrastructure…” Source: RevenueBase Database · checked Sep 15, 2026
21	Rapid Response Telecoms LTD	Indirect evidence	Barnsley, United KingdomHQ checked Sep 15, 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 15, 2026
22	Novo Technologies Limited	Indirect evidence	Irvine, United KingdomHQ checked Sep 15, 2026	51-200	79 contacts →
	Indirect evidence “Providing World-class Communication Network and Security Infrastructure Solutions Novo Technologies is dedicated to projects excellence, Novo Technologies undertakes end to end…” Source: RevenueBase Database · checked Sep 15, 2026
23	ISG Tech	Indirect evidence	Nelson, United KingdomHQ checked Sep 15, 2026	201-500	76 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 15, 2026
24	ICS Communications	Indirect evidence	Camberley, United KingdomHQ checked Sep 15, 2026	11-50	75 contacts →
	Indirect evidence “Contact an expert now: 0800 9 77 88 99 Specialists in providing businesses with telecoms, data and energy since 1989.” Source: RevenueBase Database · checked Sep 15, 2026
25	Installation Technology Limited	Partial evidence	Reading, United KingdomHQ checked Sep 15, 2026	51-200	74 contacts →
	Partial evidence “Installation Technology has over thirty years of experience in providing technical solutions in advanced communication systems.” Source: RevenueBase Database · checked Sep 15, 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: fiber optic installation 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 fiber optic installation companies.
Partial evidence: Its own public description names part of fiber optic installation companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name fiber optic installation 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 815 fiber optic installation companies based in the United Kingdom

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Fiber optic installation companies based in the United Kingdom at a glance

As of Sep 15, 2026

36.9%Verified-email coverage

24.8Average contacts per company

11-50Median size (employees)

11.3%Largest-city concentration · London

Sep 15, 2026Page data refreshed

Companies by employee count

1-10

398

11-50

261

51-200

112

201-500

501-1,000

1,001-5,000

5,001-10,000

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 815 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 fiber optic installation 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 “fiber optic installation 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 fiber optic installation 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 fiber optic installation 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, 7,457 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 15, 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.

Fiber optic installation companies by metro

Fiber optic installation companies in London92

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 fiber optic installation 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 fiber optic installation companies are there based in the United Kingdom?

RevenueBase identified 815 fiber optic installation 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 fiber optic installation companies?

London leads with 92 headquartered companies, followed by Birmingham (19) and Bristol (17).

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 7,457 verified decision-maker contacts tracked across these 815 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 15, 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.