Company lists · Data refreshed September 2026

Top 25 Iot security software companies based in the United Kingdom

Name: Iot security software companies based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 4, 2026 132 companies tracked

RevenueBase identified 132 iot security software companies headquartered in the United Kingdom as of September 2026 and tracks 6,774 professional contacts across them, including 3,350 with verified work emails and 1,017 with mobile numbers. London is the largest hub.

This list covers iot security software companies 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, how directly it supports the match, and when it was last checked. Data refreshed September 4, 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 HQ checked on every row Match evidence on every row Refreshed Sep 4, 2026 86% judged on-target in blind review

132Companies

6,774Contacts tracked

3,350Verified emails

1,017Mobile numbers

Unlock all 132 companies Free signup · no credit card · 500 free credits

The 25 largest iot security software companies based in the United Kingdom

Ranked by team size

Top 25 of 132 iot security software companies based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 4, 2026. Evidence rates how directly each company's own description names iot security software companies: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	SophosIndirect evidence	Abingdon, United KingdomHQ checked Sep 4, 2026	5,001-10,000	4,963
	“Sophos is a cybersecurity leader defending organizations globally with an AI-driven platform and expert-led services.” Source: company website · checked Sep 4, 2026
2	Quorum CyberIndirect evidence	Edinburgh, United KingdomHQ checked Sep 4, 2026	201-500	292
	“At Quorum Cyber, we're on a mission to help good people win.” Source: company website · checked Sep 4, 2026
3	Gorilla Technology GroupStrong evidence	London, United KingdomHQ checked Sep 4, 2026	51-200	188
	“Headquartered in London U.K, Gorilla is a global solution provider in Security Intelligence, Network Intelligence, Business Intelligence and IoT technology.” Source: company website · checked Sep 4, 2026
4	IntercedeIndirect evidence	Lutterworth, United KingdomHQ checked Sep 4, 2026	51-200	96
	“Intercede® is a cybersecurity company specialising in identity, credential management and secure mobility to enable digital trust.” Source: company website · checked Sep 4, 2026
5	Titania LTDPartial evidence	London, United KingdomHQ checked Sep 4, 2026	51-200	89
	“Dedicated to securing the networks society depends on.” Source: company website · checked Sep 4, 2026
6	TelesoftIndirect evidence	Blandford, United KingdomHQ checked Sep 4, 2026	51-200	68
	“The organisations that run our world face relentless complexity and evolving threats.” Source: company website · checked Sep 4, 2026
7	Eset UKIndirect evidence	Bournemouth, United KingdomHQ checked Sep 4, 2026	51-200	66
	“We help businesses and individuals stay protected in an increasingly complex digital world.” Source: company website · checked Sep 4, 2026
8	Garrison NOW A Part Of EverfoxIndirect evidence	London, United KingdomHQ checked Sep 4, 2026	51-200	59
	“Garrison is a London-based cybersecurity company founded in 2014 by David Garfield (CEO) and Henry Harrison (Chief Scientist).” Source: company website · checked Sep 4, 2026
9	Coretech SecurityPartial evidence	Cheltenham, United KingdomHQ checked Sep 4, 2026	51-200	41
	“CoreTech is a specialist cyber security company whose people are motivated by the desire to deliver exceptional capabilities coupled with a real sense of mission.” Source: company website · checked Sep 4, 2026
10	NothreatStrong evidence	London, United KingdomHQ checked Sep 4, 2026	11-50	36
	“The future of IoT/OT security is here.” Source: company website · checked Sep 4, 2026
11	defense.comPartial evidence	Stevenage, United KingdomHQ checked Sep 4, 2026	51-200	32
	“Defense.com is transforming the way businesses manage cyber security by allowing them to easily identify, prioritise and remediate threats.” Source: company website · checked Sep 4, 2026
12	Ssl247 A Sectigo CompanyPartial evidence	London, United KingdomHQ checked Sep 4, 2026	51-200	24
	“SSL247 (A Sectigo Company) has nearly 20 years of security consulting experience operating in 18 different markets globally.” Source: company website · checked Sep 4, 2026
13	AngokaStrong evidence	Belfast, United KingdomHQ checked Sep 4, 2026	11-50	23
	“ANGOKA is an IoT security company focused on protecting M2M communications for Smart Cities and Mobility.” Source: company website · checked Sep 4, 2026
14	4secure LTDPartial evidence	Northampton, United KingdomHQ checked Sep 4, 2026	11-50	22
	“4Secure is a trusted provider of software defined, cross-network/cross-domain cybersecurity solutions for commercial, government and defence.” Source: company website · checked Sep 4, 2026
15	Giraffe CctvStrong evidence	Barnstaple, United KingdomHQ checked Sep 4, 2026	11-50	21
	“Established in 2012, Giraffe is a technology business supplying solutions to the global security sector, with core competencies in industrial design and software development.” Source: company website · checked Sep 4, 2026
16	PureidIndirect evidence	Royston, United KingdomHQ checked Sep 4, 2026	11-50	20
	“Redefining Identity Management” Source: company website · checked Sep 4, 2026
17	DeltaflareIndirect evidence	London, United KingdomHQ checked Sep 4, 2026	11-50	15
	“deltaflare is a technology company rooted in the Critical National Infrastructure.” Source: company website · checked Sep 4, 2026
18	Assuria LTDStrong evidence	Reading, United KingdomHQ checked Sep 4, 2026	11-50	13
	“Assuria provides trusted cyber security software solutions and managed security services that power Security Operations Centres, IT Protective Monitoring services and IT Assurance…” Source: company website · checked Sep 4, 2026
19	PC Power International LTDPartial evidence	London, United KingdomHQ checked Sep 4, 2026	11-50	10
	“PC POWER INTERNATIONAL LTD is a computer & network security company based in the City, London, United Kingdom.” Source: company website · checked Sep 4, 2026
20	Microsoft Azure CommunityIndirect evidence	London, United KingdomHQ checked Sep 4, 2026	11-50	9
	“Community of Azure users.” Source: company website · checked Sep 4, 2026
21	Netaccess LTDIndirect evidence	Flitton, United KingdomHQ checked Sep 4, 2026	11-50	8
	“Design Philosophy The netaccess core design philosophy has always been to develop systems that support customer processes, ensure our products work for the user and reduce, as far…” Source: company website · checked Sep 4, 2026
22	Y3k Europe LTDIndirect evidence	Caterham, United KingdomHQ checked Sep 4, 2026	11-50	8
	“Since Y3K has been at the forefront of technological advancements, propelling innovation forward.” Source: company website · checked Sep 4, 2026
23	MYDISStrong evidence	Redditch, United KingdomHQ checked Sep 4, 2026	11-50	8
	“MYDIS is a UK-based security and software firm reimagining how physical and digital systems work together to protect, optimise, and empower high-risk environments.” Source: company website · checked Sep 4, 2026
24	BlueskytecStrong evidence	Bath, United KingdomHQ checked Sep 4, 2026	11-50	7
	“Security for Cyber-Physical systems cannot be just a "software download" to your device, it needs to be built in from the ground up.” Source: company website · checked Sep 4, 2026
25	Rebasoft LimitedStrong evidence	Reading, United KingdomHQ checked Sep 4, 2026	11-50	7
	“Rebasoft is a UK based Software and Services company, founded in 2009 and produces software solutions for the Cyber Security market space.” Source: company website · checked Sep 4, 2026

Showing 25 of 132 iot security software companies based in the United Kingdom

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Iot security software companies based in the United Kingdom at a glance

As of Sep 4, 2026

1-10Median size (employees)

LondonLargest hub · 50 HQs

1,017Contacts with mobile numbers

Sep 4, 2026Data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

5,001-10,000

10001+

Verified emails by last verification

0–30

31–60

271

61–90

1,821

90–180

1,175

180+

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 security software companies, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, 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 security software companies”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among iot security software companies, 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 an evidence 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, 3,350 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 4, 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.

Iot security software companies by metro

Iot security software companies in London50

Frequently asked

How many iot security software companies are there based in the United Kingdom?

RevenueBase identified 132 iot security software companies 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?

Sophos, headquartered in Abingdon, tops this list with the largest team on record.

Which city has the most iot security software companies?

London leads with 50 headquartered companies, followed by Basingstoke (3) and Newcastle Upon Tyne (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 3,350 verified decision-maker contacts tracked across these 132 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 4, 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 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.