Company lists · Data refreshed September 2026

Top 25 Telecommunications engineering firms based in the United Kingdom

Name: Telecommunications engineering firms 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 826 companies tracked

RevenueBase identified 826 telecommunications engineering firms headquartered in the United Kingdom as of September 2026 and tracks 10,058 professional contacts across them, including 3,180 with verified work emails. London is the largest hub.

This list covers telecommunications engineering firms 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

826Companies

10,058Contacts tracked

3,180Verified emails

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The 25 largest telecommunications engineering firms based in the United Kingdom

Ranked by team size

Top 25 of 826 telecommunications engineering firms 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 telecommunications engineering firms: 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	Kelly Group	Indirect evidence	Wembley, United KingdomHQ checked Sep 19, 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 19, 2026
2	Maintel	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	201-500	341 contacts →
	Indirect evidence “Maintel is a communications managed services provider.” Source: RevenueBase Database · checked Sep 19, 2026
3	Morrison Telecom Services	Indirect evidence	Stevenage, United KingdomHQ checked Sep 19, 2026	501-1,000	339 contacts →
	Indirect evidence “Morrison Telecom Services is focused on the design, build and maintenance of telecom infrastructure for key clients in the fixed telecom market.” Source: RevenueBase Database · checked Sep 19, 2026
4	Clarke Telecom	Indirect evidence	Manchester, United KingdomHQ checked Sep 19, 2026	201-500	312 contacts →
	Indirect evidence “Clarke Telecom carries out every aspect of wireless telecoms network infrastructure delivery.” Source: RevenueBase Database · checked Sep 19, 2026
5	MAP Group UK	Indirect evidence	Middlesbrough, United KingdomHQ checked Sep 19, 2026	201-500	275 contacts →
	Indirect evidence “Map Group (UK) is one of the leading independent providers of professional technology services to the UK communications sector.” Source: RevenueBase Database · checked Sep 19, 2026
6	Magdalene	Partial evidence	St Ives, United KingdomHQ checked Sep 19, 2026	201-500	273 contacts →
	Partial evidence “Magdalene provides comprehensive independent solutions which address the individual needs of our customers throughout the Telecommunications Industry.” Source: RevenueBase Database · checked Sep 19, 2026
7	Beacon Comms	Indirect evidence	Tavistock, United KingdomHQ checked Sep 19, 2026	201-500	151 contacts →
	Indirect evidence “Beacon Comms is the trading name of Beacon Communication Services Ltd.” Source: RevenueBase Database · checked Sep 19, 2026
8	Cass Worldwide	Partial evidence	Snitterfield, United KingdomHQ checked Sep 19, 2026	201-500	134 contacts →
	Partial evidence “CASS (Cabling and Splicing Services) is a services driven telecommunications specialist business.” Source: RevenueBase Database · checked Sep 19, 2026
9	Genesis Technology Services Limited	Partial evidence	Peterborough, United KingdomHQ checked Sep 19, 2026	501-1,000	132 contacts →
	Partial evidence “Genesis Technology Services Limited (GTS Ltd) is a leading engineering service provider in the UK and a global multinational corporation, based in Cambridgeshire, UK.” Source: RevenueBase Database · checked Sep 19, 2026
10	Swann Engineering Group LTD	Partial evidence	Braintree, United KingdomHQ checked Sep 19, 2026	51-200	123 contacts →
	Partial evidence “About Swann Engineering Group Founded in 1974, Swann Engineering Group specializes in delivering turnkey solutions for complex engineering challenges.” Source: RevenueBase Database · checked Sep 19, 2026
11	Waldon Telecom	Indirect evidence	West Byfleet, United KingdomHQ checked Sep 19, 2026	51-200	93 contacts →
	Indirect evidence “Providing high quality, dedicated telecom infrastructure services to Operators across the country.” Source: RevenueBase Database · checked Sep 19, 2026
12	Linbrooke Services LTD	Indirect evidence	Sheffield, United KingdomHQ checked Sep 19, 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 19, 2026
13	KCP Network	Indirect evidence	Bracknell, United KingdomHQ checked Sep 19, 2026	51-200	81 contacts →
	Indirect evidence “KCP \| Network Solutions and Design \| Software Development \| Automation Since 2008 KCP built a legacy of trust with our global customers by becoming a leading provider of SMART…” Source: RevenueBase Database · checked Sep 19, 2026
14	Switchshop Limited	Indirect evidence	Kimpton, United KingdomHQ checked Sep 19, 2026	51-200	79 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 19, 2026
15	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
16	Novo Technologies Limited	Indirect evidence	Irvine, United KingdomHQ checked Sep 19, 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 19, 2026
17	ICS Communications	Indirect evidence	Camberley, United KingdomHQ checked Sep 19, 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 19, 2026
18	Installation Technology Limited	Indirect evidence	Reading, United KingdomHQ checked Sep 19, 2026	51-200	74 contacts →
	Indirect evidence “Installation Technology has over thirty years of experience in providing technical solutions in advanced communication systems.” Source: RevenueBase Database · checked Sep 19, 2026
19	VEA Telecoms	Indirect evidence	Bracknell, United KingdomHQ checked Sep 19, 2026	51-200	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 19, 2026
20	Abzorb	Indirect evidence	Brighouse, United KingdomHQ checked Sep 19, 2026	51-200	60 contacts →
	Indirect evidence “Business: It’s all about connecting people.” Source: RevenueBase Database · checked Sep 19, 2026
21	Radiocoms Systems LTD	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	57 contacts →
	Indirect evidence “Radiocoms Systems Limited is a mature communications company of some 50 years and is now the UK’s leading independent communications supplier specialising in the design…” Source: RevenueBase Database · checked Sep 19, 2026
22	Northsky Group	Indirect evidence	Castleford, United KingdomHQ checked Sep 19, 2026	11-50	55 contacts →
	Indirect evidence “We design and build critical telecoms and utility infrastructure networks.” Source: RevenueBase Database · checked Sep 19, 2026
23	MMX	Indirect evidence	Solihull, United KingdomHQ checked Sep 19, 2026	51-200	54 contacts →
	Indirect evidence “Here at MMX (part of the TXO group), we're experts in providing communication network design, build & support services.” Source: RevenueBase Database · checked Sep 19, 2026
24	Electranet UK Limited	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	49 contacts →
	Indirect evidence “Electranet’s mission is to be a preferred partner to the public and private sectors, bringing competitively priced, secure and innovative solutions to the market.” Source: RevenueBase Database · checked Sep 19, 2026
25	Callan Connect	Strong evidence	Birmingham, United KingdomHQ checked Sep 19, 2026	51-200	46 contacts →
	Strong evidence “Callan Connect is a Civil and Fibre Engineering company based in Aston, Birmingham specialising in the telecommunications industry.” 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: telecommunications engineering firms. 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 telecommunications engineering firms.
Partial evidence: Its own public description names part of telecommunications engineering firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name telecommunications engineering firms. 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 826 telecommunications engineering firms based in the United Kingdom

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Telecommunications engineering firms based in the United Kingdom at a glance

As of Sep 19, 2026

31.6%Verified-email coverage

12.2Average contacts per company

11-50Median size (employees)

12.7%Largest-city concentration · London

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

407

11-50

293

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 826 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 telecommunications engineering firms, 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 “telecommunications engineering firms”. 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 telecommunications engineering firms), 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 telecommunications engineering firms, 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, 3,180 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.

Telecommunications engineering firms by metro

Telecommunications engineering firms in London105

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 telecommunications engineering firms, 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 telecommunications engineering firms are there based in the United Kingdom?

RevenueBase identified 826 telecommunications engineering firms 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?

Kelly Group, headquartered in Wembley, tops this list with the largest team on record.

Which city has the most telecommunications engineering firms?

London leads with 105 headquartered companies, followed by Manchester (20) and Birmingham (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 3,180 verified decision-maker contacts tracked across these 826 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.