Company lists · Data refreshed September 2026

Top 25 Telecom infrastructure providers based in the United Kingdom

RevenueBase identified 1,235 company matches for telecom infrastructure providers associated with the United Kingdom as of September 2026 and tracks 36,630 professional contacts across them, including 13,757 with verified work emails. London is the largest hub.

This list covers company matches for telecom infrastructure providers associated with the United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 19, 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 19, 2026 How this list was built
1,235Companies
36,630Contacts tracked
13,757Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest telecom infrastructure providers based in the United Kingdom

Ranked by team size
Top 25 of 1,235 company matches for telecom infrastructure providers based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 19, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchLondon, United KingdomHQ recorded Sep 19, 20265,001-10,0006,233 contacts →

Exact match

“Colt Technology Services (Colt) is a global digital infrastructure company which creates extraordinary connections to help businesses succeed.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
2Exact matchLondon, United KingdomHQ recorded Sep 19, 20261,001-5,0003,242 contacts →

Exact match

“IHS Towers is one of the largest independent owners, operators and developers of shared communications infrastructure in the world by tower count and is solely focused on the…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
3Exact matchWarwick, United KingdomHQ recorded Sep 19, 20261,001-5,0002,407 contacts →

Exact match

“Telent designs, builds, manages, and maintains the nation’s critical infrastructure technology that keeps the country moving, connected, and safe.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
4Exact matchLondon, United KingdomHQ recorded Sep 19, 2026501-1,0001,319 contacts →

Exact match

“At Boldyn Networks we unlock the power of an interconnected future.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
5Exact matchWembley, United KingdomHQ recorded Sep 19, 20261,001-5,0001,053 contacts →

Exact match

“Established in 1985 to support the emerging UK cable television market, Kelly Group has diversified to meet the needs of our clients.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
6Exact matchLondon, United KingdomHQ recorded Sep 19, 2026501-1,000784 contacts →

Exact match

“Helios Towers is a leading independent telecom tower company connecting people and powering growth across Africa and the Middle East.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
7Exact matchRochdale, United KingdomHQ recorded Sep 19, 2026501-1,000521 contacts →

Exact match

“Zen is a B Corp certified telecommunications and technology service provider in the UK.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
8Exact matchWarrington, United KingdomHQ recorded Sep 19, 2026501-1,000519 contacts →

Exact match

“WHP is one of the UK's leading suppliers of network infrastructure services.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
9Exact matchMagor, United KingdomHQ recorded Sep 19, 2026201-500470 contacts →

Exact match

“Indigo engineers a digital future by designing, deploying, and supporting digital infrastructure for network owners and operators.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
10Exact matchReading, United KingdomHQ recorded Sep 19, 2026501-1,000443 contacts →

Exact match

“We’re Neos Networks, a leading B2B telecoms provider with Britain’s biggest business-dedicated network.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
11Exact matchLondon, United KingdomHQ recorded Sep 19, 2026201-500416 contacts →

Exact match

“EXA Infrastructure is an award-winning portfolio company of I Squared Capital and one of the largest dedicated digital infrastructure platforms throughout Europe, connecting North…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
12Exact matchDerby, United KingdomHQ recorded Sep 19, 2026501-1,000367 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
13Exact matchLondon, United KingdomHQ recorded Sep 19, 2026201-500362 contacts →

Exact match

“euNetworks (@euNetworks) is a European provider of bandwidth infrastructure services.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
14Exact matchStevenage, United KingdomHQ recorded Sep 19, 2026501-1,000339 contacts →

Exact match

“Morrison Telecom Services is focused on the design, build and maintenance of telecom infrastructure for key clients in the fixed telecom market.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
15Exact matchManchester, United KingdomHQ recorded Sep 19, 2026201-500312 contacts →

Exact match

“Clarke Telecom carries out every aspect of wireless telecoms network infrastructure delivery.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
16Exact matchTheale, United KingdomHQ recorded Sep 19, 2026201-500300 contacts →

Exact match

“Welcome to Cornerstone, the leading UK mobile infrastructure services company.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
17Exact matchMiddlesbrough, United KingdomHQ recorded Sep 19, 2026201-500275 contacts →

Exact match

“Map Group (UK) is one of the leading independent providers of professional technology services to the UK communications sector.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
18Exact matchSt Ives, United KingdomHQ recorded Sep 19, 2026201-500273 contacts →

Exact match

“Magdalene provides comprehensive independent solutions which address the individual needs of our customers throughout the Telecommunications Industry.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
19Exact matchLondon, United KingdomHQ recorded Sep 19, 2026501-1,000248 contacts →

Exact match

“Building on more than seven decades of experience in engineering and technology innovation, Telrad Networks is an award-winning, recognized global leader in wireless…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
20Exact matchShrewsbury, United KingdomHQ recorded Sep 19, 2026201-500237 contacts →

Exact match

“Telecom IP helps landowners, property owners, businesses and investors unlock the value of their telecom assets.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
21Exact matchManchester, United KingdomHQ recorded Sep 19, 2026201-500228 contacts →

Exact match

“Sudlows is a multi-award winning Critical Infrastructures, Enterprise Services and Facilities Management specialist which provides a full range of technical services for…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
22Exact matchCambridge, United KingdomHQ recorded Sep 19, 2026201-500223 contacts →

Exact match

“Founded in 1985, John Henry Group is a leading, national independent integrated services provider providing best in class expertise, enabling our partner clients to deliver…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
23Exact matchAlbourne, United KingdomHQ recorded Sep 19, 202651-200190 contacts →

Exact match

“Technetix provides critical broadband infrastructure for network operators globally.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
24Exact matchCoalisland, United KingdomHQ recorded Sep 19, 2026501-1,000158 contacts →

Exact match

“Viberoptix delivers frontline services to fibre networks providers across the UK and Ireland.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
25Exact matchScunthorpe, United KingdomHQ recorded Sep 19, 2026201-500155 contacts →

Exact match

“ADComms is a leading provider of intelligent telecoms infrastructure and On-Train solutions for the UK rail industry.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase

Showing 25 of 1,235 telecom infrastructure providers based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 13,757 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Telecom infrastructure providers based in the United Kingdom at a glance

As of Sep 19, 2026
37.6%Verified-email coverage
29.7Average contacts per company
11-50Median size (employees)
15.1%Largest-city concentration · London
Sep 19, 2026Page data refreshed

Companies by employee count

1-10
529
11-50
478
51-200
147
201-500
41
501-1,000
19
1,001-5,000
8
5,001-10,000
2
10001+
2

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 1,235 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

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
Company records associated with the United Kingdom whose business descriptions match “telecom infrastructure providers” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 13,757 professional contacts with verified work emails across the full matched dataset. 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.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “telecom infrastructure providers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many telecom infrastructure providers are there based in the United Kingdom?

RevenueBase identified 1,235 company matches for telecom infrastructure providers associated with the United Kingdom as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Colt Technology Services tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most telecom infrastructure providers?

London leads with 187 company records, followed by Manchester (28) and Birmingham (26).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 13,757 professional contacts with verified work emails tracked across these 1,235 companies; direct dials are available where recorded.

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.

Ready to reach these companies? Verified emails and direct dials for all 1,235 telecom infrastructure providers based in the United Kingdom. Start with a free account, no credit card.

Download this list →

Related lists

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.