Company lists · Data refreshed September 2026

Top 25 Telecommunication engineering firms based in the United Kingdom

Name: Telecommunication 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 30, 2026 1,102 companies tracked

RevenueBase identified 1,102 telecommunication engineering firms headquartered in the United Kingdom as of September 2026 and tracks 13,250 professional contacts across them, including 4,661 with verified work emails. London is the largest hub.

This list covers telecommunication 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 30, 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 30, 2026 86% judged on-target in blind review

1,102Companies

13,250Contacts tracked

4,661Verified emails

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The 25 largest telecommunication engineering firms based in the United Kingdom

Ranked by team size

Top 25 of 1,102 telecommunication engineering firms based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 30, 2026. RevenueBase Smart Search rates how each company's information relates to telecommunication 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 30, 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 30, 2026
2	WHP Telecoms Limited	Indirect evidence	Warrington, United KingdomHQ checked Sep 30, 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 30, 2026
3	Comex 2000	Partial evidence	Derby, United KingdomHQ checked Sep 30, 2026	501-1,000	367 contacts →
	Partial 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 30, 2026
4	Maintel	Indirect evidence	London, United KingdomHQ checked Sep 30, 2026	201-500	341 contacts →
	Indirect evidence “Maintel is a communications managed services provider.” Source: RevenueBase Database · checked Sep 30, 2026
5	Morrison Telecom Services	Indirect evidence	Stevenage, United KingdomHQ checked Sep 30, 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 30, 2026
6	Clarke Telecom	Indirect evidence	Manchester, United KingdomHQ checked Sep 30, 2026	201-500	312 contacts →
	Indirect evidence “Clarke Telecom carries out every aspect of wireless telecoms network infrastructure delivery.” Source: RevenueBase Database · checked Sep 30, 2026
7	MAP Group UK	Indirect evidence	Middlesbrough, United KingdomHQ checked Sep 30, 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 30, 2026
8	Magdalene	Partial evidence	St Ives, United KingdomHQ checked Sep 30, 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 30, 2026
9	Aerial Direct	Indirect evidence	Portsmouth, United KingdomHQ checked Sep 30, 2026	201-500	209 contacts →
	Indirect evidence “Aerial Direct are an award-winning, UK-based, managed communications expert.” Source: RevenueBase Database · checked Sep 30, 2026
10	Avoira	Indirect evidence	Bury, United KingdomHQ checked Sep 30, 2026	51-200	156 contacts →
	Indirect evidence “Our expertise spans consultancy, sales, installation and maintenance services across the communication spectrum, from unified comms systems and hardware, CX solutions and cloud…” Source: RevenueBase Database · checked Sep 30, 2026
11	Beacon Comms	Indirect evidence	Tavistock, United KingdomHQ checked Sep 30, 2026	201-500	151 contacts →
	Indirect evidence “Beacon Comms is the trading name of Beacon Communication Services Ltd.” Source: RevenueBase Database · checked Sep 30, 2026
12	Cass Worldwide	Partial evidence	Snitterfield, United KingdomHQ checked Sep 30, 2026	201-500	134 contacts →
	Partial evidence “CASS (Cabling and Splicing Services) is a services driven telecommunications specialist business.” Source: RevenueBase Database · checked Sep 30, 2026
13	Genesis Technology Services Limited	Partial evidence	Peterborough, United KingdomHQ checked Sep 30, 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 30, 2026
14	Swann Engineering Group LTD	Partial evidence	Braintree, United KingdomHQ checked Sep 30, 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 30, 2026
15	FLR Spectron LTD	Indirect evidence	Murray Road, United KingdomHQ checked Sep 30, 2026	51-200	113 contacts →
	Indirect evidence “FLR Spectron is an award-winning, integrated solutions provider with over two decades of experience in the Telecoms, Mobile, Interiors, Technology, Cooling and Fire and Security…” Source: RevenueBase Database · checked Sep 30, 2026
16	Tela Technology	Indirect evidence	Hampton-in-arden, United KingdomHQ checked Sep 30, 2026	51-200	111 contacts →
	Indirect evidence “We provide communication solutions and IT business services to businesses, big and small, to help your business grow.” Source: RevenueBase Database · checked Sep 30, 2026
17	Waldon Telecom	Indirect evidence	West Byfleet, United KingdomHQ checked Sep 30, 2026	51-200	93 contacts →
	Indirect evidence “Providing high quality, dedicated telecom infrastructure services to Operators across the country.” Source: RevenueBase Database · checked Sep 30, 2026
18	Linbrooke Services LTD	Indirect evidence	Sheffield, United KingdomHQ checked Sep 30, 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 30, 2026
19	KCP Network	Indirect evidence	Bracknell, United KingdomHQ checked Sep 30, 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 30, 2026
20	Switchshop Limited	Indirect evidence	Kimpton, United KingdomHQ checked Sep 30, 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 30, 2026
21	Novo Technologies Limited	Indirect evidence	Irvine, United KingdomHQ checked Sep 30, 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 30, 2026
22	ICS Communications	Indirect evidence	Camberley, United KingdomHQ checked Sep 30, 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 30, 2026
23	Installation Technology Limited	Indirect evidence	Reading, United KingdomHQ checked Sep 30, 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 30, 2026
24	Rydal Group	Indirect evidence	Peterborough, United KingdomHQ checked Sep 30, 2026	51-200	74 contacts →
	Indirect evidence “Rydal Group is the brand name of Rydal Communications LTD, Rydal Security LTD & Rydal Energy LTD.” Source: RevenueBase Database · checked Sep 30, 2026
25	5g Communications	Indirect evidence	High Wycombe, United KingdomHQ checked Sep 30, 2026	51-200	61 contacts →
	Indirect evidence “Hello.” Source: RevenueBase Database · checked Sep 30, 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: telecommunication 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 telecommunication engineering firms.
Partial evidence: Its own public description names part of telecommunication engineering firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name telecommunication 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 1,102 telecommunication engineering firms based in the United Kingdom

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Telecommunication engineering firms based in the United Kingdom at a glance

As of Sep 30, 2026

35.2%Verified-email coverage

12.0Average contacts per company

1-10Median size (employees)

11.8%Largest-city concentration · London

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

565

11-50

383

51-200

118

201-500

501-1,000

1,001-5,000

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 1,102 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 telecommunication 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 “telecommunication 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 telecommunication 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 telecommunication 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, 4,661 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 30, 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.

Telecommunication engineering firms by metro

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 telecommunication 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 telecommunication engineering firms are there based in the United Kingdom?

RevenueBase identified 1,102 telecommunication 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 telecommunication engineering firms?

London leads with 130 headquartered companies, followed by Manchester (25) and Bristol (24).

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 4,661 verified decision-maker contacts tracked across these 1,102 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 30, 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.