Company lists · Data refreshed September 2026

Top 25 Iot connectivity device manufacturers based in the United Kingdom

Name: Iot connectivity device 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 17, 2026 83 companies tracked

RevenueBase identified 83 iot connectivity device manufacturers headquartered in the United Kingdom as of September 2026 and tracks 1,828 professional contacts across them, including 980 with verified work emails. London is the largest hub.

This list covers iot connectivity device 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 17, 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 17, 2026 86% judged on-target in blind review

83Companies

1,828Contacts tracked

980Verified emails

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The 25 largest iot connectivity device manufacturers based in the United Kingdom

Ranked by team size

Top 25 of 83 iot connectivity device manufacturers based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to iot connectivity device 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	Wireless Logic	Partial evidence	Reading, United KingdomHQ checked Sep 17, 2026	1,001-5,000	282 contacts →
	Partial evidence “A new thing, device or asset is connected to our cellular platform every 18 seconds of every day.” Source: RevenueBase Database · checked Sep 17, 2026
2	CSL Group	Strong evidence	Watford, United KingdomHQ checked Sep 17, 2026	201-500	211 contacts →
	Strong evidence “IoT Connectivity experts supporting mission and business-critical IoT applications.” Source: RevenueBase Database · checked Sep 17, 2026
3	Vodafone IOT	Partial evidence	Newbury, United KingdomHQ checked Sep 17, 2026	501-1,000	186 contacts →
	Partial evidence “Built on over 40 years of innovation, Vodafone IoT powers over 230 million connections worldwide, transforming industries from healthcare and transportation to energy and…” Source: RevenueBase Database · checked Sep 17, 2026
4	Flolive	Strong evidence	London, United KingdomHQ checked Sep 17, 2026	51-200	161 contacts →
	Strong evidence “FLOLIVE® operates the largest global, cloud-native connectivity network purpose-built for the IoT era.” Source: RevenueBase Database · checked Sep 17, 2026
5	ESEYE	Strong evidence	Guildford, United KingdomHQ checked Sep 17, 2026	51-200	120 contacts →
	Strong evidence “Eseye, a global leader in IoT Connectivity and eSIM Orchestration, empowers Enterprises and MNOs to optimize connectivity to millions of devices across over 800 networks with…” Source: RevenueBase Database · checked Sep 17, 2026
6	Adder Technology	Partial evidence	Bar Hill, United KingdomHQ checked Sep 17, 2026	51-200	108 contacts →
	Partial evidence “A global market leader in connectivity solutions, Adder Technology enables the real-time control and management of distributed IT systems.” Source: RevenueBase Database · checked Sep 17, 2026
7	Cyanconnode	Partial evidence	Cambridge, United KingdomHQ checked Sep 17, 2026	11-50	93 contacts →
	Partial evidence “CyanConnode is a world leader in the design and development of Narrowband RF mesh networks that enable Omni Internet of Things (IoT) communications.” Source: RevenueBase Database · checked Sep 17, 2026
8	Udlive	Partial evidence	Alton, United KingdomHQ checked Sep 17, 2026	11-50	36 contacts →
	Partial evidence “UDlive designs and builds products for a variety of IoT scenarios as well as platform and location software.” Source: RevenueBase Database · checked Sep 17, 2026
9	Pressac Communications	Strong evidence	Nottingham, United KingdomHQ checked Sep 17, 2026	11-50	36 contacts →
	Strong evidence “Pressac designs and manufactures UK-made wireless IoT sensors and connectivity technology used in millions of businesses and homes worldwide.” Source: RevenueBase Database · checked Sep 17, 2026
10	Siretta LTD	Partial evidence	Reading, United KingdomHQ checked Sep 17, 2026	11-50	21 contacts →
	Partial evidence “Siretta is a wireless communications company located in Reading, United Kingdom and has been manufacturing & supplying industrial IoT products since the early The product…” Source: RevenueBase Database · checked Sep 17, 2026
11	LM Technologies LTD	Strong evidence	London, United KingdomHQ checked Sep 17, 2026	11-50	20 contacts →
	Strong evidence “WIRELESS SOLUTIONS LM Technologies is a key enabler of both the Internet of Things (IoT) and cable-free integrator that designs, develops and manufactures innovative wireless…” Source: RevenueBase Database · checked Sep 17, 2026
12	Mobius Networks Limited	Partial evidence	Coalville, United KingdomHQ checked Sep 17, 2026	11-50	16 contacts →
	Partial evidence “Mobius Networks is about reliable, secure, quality connections for any Machine to Machine(M2M) or Internet of Things (IoT) system around the world.” Source: RevenueBase Database · checked Sep 17, 2026
13	Alliot Technologies LTD	Partial evidence	Huddersfield, United KingdomHQ checked Sep 17, 2026	11-50	12 contacts →
	Partial evidence “Welcome to Alliot where we’re all about IoT.” Source: RevenueBase Database · checked Sep 17, 2026
14	Beam Connectivity	Indirect evidence	Bristol, United KingdomHQ checked Sep 17, 2026	11-50	11 contacts →
	Indirect evidence “We can help you unlock the value in the data generated by your vehicle fleet.” Source: RevenueBase Database · checked Sep 17, 2026
15	Arkessa Wireless Logic Group	Strong evidence	London, United KingdomHQ checked Sep 17, 2026	11-50	11 contacts →
	Strong evidence “Arkessa offers world-wide, world-class cellular connectivity services that make it easy to design, deploy and manage IoT devices securely, efficiently, and at scale, regardless of…” Source: RevenueBase Database · checked Sep 17, 2026
16	Caburn Telecom	Strong evidence	Appley Bridge, United KingdomHQ checked Sep 17, 2026	11-50	10 contacts →
	Strong evidence “Caburn Telecom is a global provider of secure, resilient IoT connectivity solutions.” Source: RevenueBase Database · checked Sep 17, 2026
17	Hubit Technology LTD	Partial evidence	Hove, United KingdomHQ checked Sep 17, 2026	1-10	9 contacts →
	Partial evidence “Hubit designs and delivers end-to-end IoT and smart infrastructure solutions that turn physical environments into intelligent, data-driven systems.” Source: RevenueBase Database · checked Sep 17, 2026
18	Astra Telematics Limited	Strong evidence	Trafford Park, United KingdomHQ checked Sep 17, 2026	1-10	8 contacts →
	Strong evidence “Specialists in vehicle/asset IoT solutions with over 20 years experience in the industry, from device design/manufacturing, to seamless software services.” Source: RevenueBase Database · checked Sep 17, 2026
19	M2m Cloud	Partial evidence	Dundee, United KingdomHQ checked Sep 17, 2026	11-50	7 contacts →
	Partial evidence “Sometimes it seems like everyone wants to disrupt the IoT market.” Source: RevenueBase Database · checked Sep 17, 2026
20	Go2sim LTD	Indirect evidence	Chatham, United KingdomHQ checked Sep 17, 2026	1-10	7 contacts →
	Indirect evidence “Go2Sim was born over 10 years ago by founders Tim and Simon.” Source: RevenueBase Database · checked Sep 17, 2026
21	Lightbug	Strong evidence	Bristol, United KingdomHQ checked Sep 17, 2026	1-10	7 contacts →
	Strong evidence “Lightbug designs, manufactures, and sells IoT devices, specialising in location technologies, both indoors and out.” Source: RevenueBase Database · checked Sep 17, 2026
22	Invixible	Partial evidence	Reading, United KingdomHQ checked Sep 17, 2026	11-50	7 contacts →
	Partial evidence “InviXible is a trusted Internet of Things (IoT) solutions development & consulting services company.” Source: RevenueBase Database · checked Sep 17, 2026
23	INX Limited	Indirect evidence	Sheffield, United KingdomHQ checked Sep 17, 2026	1-10	6 contacts →
	Indirect evidence “inx have been developing connected inteligent systems for 15 years.” Source: RevenueBase Database · checked Sep 17, 2026
24	Intamac Systems	Strong evidence	Northampton, United KingdomHQ checked Sep 17, 2026	1-10	6 contacts →
	Strong evidence “The Intamac IoT platform is designed to seamlessly integrate disparate devices.” Source: RevenueBase Database · checked Sep 17, 2026
25	Farsite Communications LTD	Partial evidence	Basingstoke, United KingdomHQ checked Sep 17, 2026	11-50	5 contacts →
	Partial evidence “FarSite Communications Ltd, designs, develops and manufactures High quality, high performance WAN Communications Gateway Appliances, Adapters for PCs, Servers used in a business…” Source: RevenueBase Database · checked Sep 17, 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: iot connectivity device 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 iot connectivity device manufacturers.
Partial evidence: Its own public description names part of iot connectivity device manufacturers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name iot connectivity device 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 83 iot connectivity device manufacturers based in the United Kingdom

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Iot connectivity device manufacturers based in the United Kingdom at a glance

As of Sep 17, 2026

53.6%Verified-email coverage

22.0Average contacts per company

1-10Median size (employees)

19.3%Largest-city concentration · London

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

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 83 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 iot connectivity device 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 “iot connectivity device 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 iot connectivity device 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 iot connectivity device 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, 980 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 17, 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 iot connectivity device 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 iot connectivity device manufacturers are there based in the United Kingdom?

RevenueBase identified 83 iot connectivity device 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?

Wireless Logic, headquartered in Reading, tops this list with the largest team on record.

Which city has the most iot connectivity device manufacturers?

London leads with 16 headquartered companies, followed by Cambridge (5) and Birmingham (4).

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 980 verified decision-maker contacts tracked across these 83 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 17, 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.