Company lists · Data refreshed September 2026

Top 25 Communications systems manufacturers based in the United Kingdom

Name: Communications systems manufacturers based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 115 companies tracked

RevenueBase identified 115 communications systems manufacturers headquartered in the United Kingdom as of September 2026 and tracks 2,617 professional contacts across them, including 862 with verified work emails. London is the largest hub.

This list covers communications systems manufacturers 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 16, 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 16, 2026 86% judged on-target in blind review

115Companies

2,617Contacts tracked

862Verified emails

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The 25 largest communications systems manufacturers based in the United Kingdom

Ranked by team size

Top 25 of 115 communications systems manufacturers based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to communications systems manufacturers: 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	Sepura	Partial evidence	Cambridge, United KingdomHQ checked Sep 16, 2026	201-500	516 contacts →
	Partial evidence “Sepura is a recognised global leader in the development and supply of radio terminals, accessories and applications for mission-critical and business-critical communications.” Source: RevenueBase Database · checked Sep 16, 2026
2	all.space	Partial evidence	Reading, United KingdomHQ checked Sep 16, 2026	51-200	173 contacts →
	Partial evidence “ALL.SPACE isn’t just revolutionizing communication; we’re shaping the very future of defense operations, with the most advanced tactical multi-link mobility terminals-seamlessly…” Source: RevenueBase Database · checked Sep 16, 2026
3	ETL Systems	Partial evidence	Hereford, United KingdomHQ checked Sep 16, 2026	51-200	169 contacts →
	Partial evidence “ETL Systems has been at the forefront of RF design and manufacturing for over 35 years.” Source: RevenueBase Database · checked Sep 16, 2026
4	ASL	Indirect evidence	Lewes, United KingdomHQ checked Sep 16, 2026	201-500	129 contacts →
	Indirect evidence “Founded in 1989 as an electronic design consultancy, Application Solutions (Safety and Security) Limited (ASL) embarked on its journey into the public address and voice alarm…” Source: RevenueBase Database · checked Sep 16, 2026
5	AST Networks	Partial evidence	Great Yarmouth, United KingdomHQ checked Sep 16, 2026	51-200	124 contacts →
	Partial evidence “AST Networks is a leading satellite communications provider; enabling global connectivity.” Source: RevenueBase Database · checked Sep 16, 2026
6	STS Defence	Partial evidence	Gosport, United KingdomHQ checked Sep 16, 2026	51-200	120 contacts →
	Partial evidence “STS Defence, a part of the Cicor Group, is a UK-based engineering and technology company specialising in mission-critical, secure communications & networks, electronic warfare &…” Source: RevenueBase Database · checked Sep 16, 2026
7	Steatite Limited	Partial evidence	Redditch, United KingdomHQ checked Sep 16, 2026	51-200	113 contacts →
	Partial evidence “Steatite Ltd is a market leader in the design, production, test and supply of rugged industrial computers, MANET radio systems, advanced wideband antennas, and imaging…” Source: RevenueBase Database · checked Sep 16, 2026
8	Global Invacom Group	Strong evidence	Canterbury, United KingdomHQ checked Sep 16, 2026	201-500	84 contacts →
	Strong evidence “Global Invacom Group designs, develops and manufactures ground equipment for Satellite Communications (SatCom), Broadcast (SatTV)t, and Global Navigation (GNSS) networks.” Source: RevenueBase Database · checked Sep 16, 2026
9	Hytera Europe	Strong evidence	Slough, United KingdomHQ checked Sep 16, 2026	51-200	51 contacts →
	Strong evidence “Hytera is a leading global manufacturer of professional mobile radio communication equipment dedicated to bringing valuable solutions to many industries and clients across the…” Source: RevenueBase Database · checked Sep 16, 2026
10	AMG Systems	Indirect evidence	Castleford, United KingdomHQ checked Sep 16, 2026	11-50	34 contacts →
	Indirect evidence “For more than 30 years, the AMG brand has been synonymous with excellence in data transmission technology and has become one of the market leaders in providing environmentally…” Source: RevenueBase Database · checked Sep 16, 2026
11	Commercis	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	51-200	33 contacts →
	Partial evidence “With over three decades of experience in the communications and technology sector, Commercis has established itself as a trusted leader in delivering global connectivity…” Source: RevenueBase Database · checked Sep 16, 2026
12	2cl	Partial evidence	Eastleigh, United KingdomHQ checked Sep 16, 2026	11-50	31 contacts →
	Partial evidence “2CL Communications is a premier provider of leading communication and security technology solutions.” Source: RevenueBase Database · checked Sep 16, 2026
13	Cherry & White	Indirect evidence	Quedgeley, United KingdomHQ checked Sep 16, 2026	11-50	26 contacts →
	Indirect evidence “Founded in 1990, Cherry & White has worked with core telecommunication providers for over 30 years.” Source: RevenueBase Database · checked Sep 16, 2026
14	Eemits Communications LTD	Partial evidence	Middlesbrough, United KingdomHQ checked Sep 16, 2026	11-50	26 contacts →
	Partial evidence “Established in 1986 Eemits Communications Ltd has become a market leader providing 2 way radio solutions to help solve your communication needs.” Source: RevenueBase Database · checked Sep 16, 2026
15	Ghekko	Indirect evidence	Macclesfield, United KingdomHQ checked Sep 16, 2026	11-50	26 contacts →
	Indirect evidence “Ghekko is an independent international company providing professional services within the Telecommunications hardware market, with operating offices in EMEA & North America.” Source: RevenueBase Database · checked Sep 16, 2026
16	Slipstream Engineering Design LTD	Indirect evidence	Shipley, United KingdomHQ checked Sep 16, 2026	11-50	22 contacts →
	Indirect evidence “We’re high speed, high frequency designers passionate about RF and digital technology.” Source: RevenueBase Database · checked Sep 16, 2026
17	Cellxica	Indirect evidence	Cambridge, United KingdomHQ checked Sep 16, 2026	11-50	19 contacts →
	Indirect evidence “We’re cellXica.” Source: RevenueBase Database · checked Sep 16, 2026
18	TES Communication Solutions	Strong evidence	Leyland, United KingdomHQ checked Sep 16, 2026	11-50	19 contacts →
	Strong evidence “For 30 years TES has deployed and maintained sophisticated communication systems.” Source: RevenueBase Database · checked Sep 16, 2026
19	Dcrs LTD Direct Communications Radio Services	Strong evidence	Huntingdon, United KingdomHQ checked Sep 16, 2026	11-50	15 contacts →
	Strong evidence “HIRE, SALES AND SERVICE OF VOICE AND DATA RADIO COMMUNICATION SYSTEMS, BODYCAMS AND APPLICATIONS.” Source: RevenueBase Database · checked Sep 16, 2026
20	Westica Communications LTD	Strong evidence	Glasgow, United KingdomHQ checked Sep 16, 2026	11-50	13 contacts →
	Strong evidence “World class microwave radio transmission products and solutions Westica Communications provides a true "One Stop Shop" for all types of wireless communication systems and services.” Source: RevenueBase Database · checked Sep 16, 2026
21	G6 Global	Partial evidence	Bristol, United KingdomHQ checked Sep 16, 2026	1-10	13 contacts →
	Partial evidence “G6 are industry leaders in the provision of radio and satellite voice and data communication solutions.” Source: RevenueBase Database · checked Sep 16, 2026
22	Vislink News & Entertainment	Partial evidence	Hemel Hempstead, United KingdomHQ checked Sep 16, 2026	201-500	11 contacts →
	Partial evidence “Manufacturer of Products and Provider of Solutions for TV / News Contribution to Broadcasters, News Organisations, Security, Surveillance and Military Comms.” Source: RevenueBase Database · checked Sep 16, 2026
23	CSE Zycomm	Partial evidence	Derbyshire, United KingdomHQ checked Sep 16, 2026	11-50	10 contacts →
	Partial evidence “Zycomm have been offering communications excellence for over 40 years.” Source: RevenueBase Database · checked Sep 16, 2026
24	Trilogy Communications Limited	Partial evidence	Cambridge, United KingdomHQ checked Sep 16, 2026	11-50	10 contacts →
	Partial evidence “Trilogy is a world class supplier of audio communications and infrastructure equipment to the Defense, Broadcast, Emergency Management, and Commercial and Industrial sectors.” Source: RevenueBase Database · checked Sep 16, 2026
25	DAC Limited	Strong evidence	Sabden, United KingdomHQ checked Sep 16, 2026	11-50	9 contacts →
	Strong evidence “DAC are a market-leading technology and engineering company, specialising in the design and manufacture of ruggedised communications equipment for use in arduous and critical…” Source: RevenueBase Database · checked Sep 16, 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: communications systems manufacturers. 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 communications systems manufacturers.
Partial evidence: Its own public description names part of communications systems manufacturers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name communications systems manufacturers. 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 115 communications systems manufacturers based in the United Kingdom

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Communications systems manufacturers based in the United Kingdom at a glance

As of Sep 16, 2026

32.9%Verified-email coverage

22.8Average contacts per company

11-50Median size (employees)

6.1%Largest-city concentration · London

Sep 16, 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 115 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 communications systems manufacturers, 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 “communications systems manufacturers”. 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 communications systems manufacturers), 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 communications systems manufacturers, 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, 862 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 16, 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 communications systems manufacturers, 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 communications systems manufacturers are there based in the United Kingdom?

RevenueBase identified 115 communications systems manufacturers 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?

Sepura, headquartered in Cambridge, tops this list with the largest team on record.

Which city has the most communications systems manufacturers?

London leads with 7 headquartered companies, followed by Bristol (4) and Borehamwood (3).

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 862 verified decision-maker contacts tracked across these 115 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 16, 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.