Company lists · Data refreshed September 2026

Top 25 Scada security service providers based in the United Kingdom

RevenueBase identified 73 scada security service providers headquartered in the United Kingdom as of September 2026 and tracks 1,939 professional contacts across them, including 476 with verified work emails. London is the largest hub.

This list covers scada security service providers 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 29, 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 29, 2026 86% judged on-target in blind review
73Companies
1,939Contacts tracked
476Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest scada security service providers based in the United Kingdom

Ranked by team size
Top 25 of 73 scada security service providers based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to scada security service providers: 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceReading, United KingdomHQ checked Sep 29, 2026201-500303 contacts →

Partial evidence

“Bridewell is the trusted cyber security partner for organisations operating within Critical National Infrastructure (CNI), as well as companies who want the highest standard of…”

Source: RevenueBase Database · checked Sep 29, 2026
2Partial evidenceThatcham, United KingdomHQ checked Sep 29, 202651-200159 contacts →

Partial evidence

“At Cyberfort we are passionate about the cyber security services we deliver for our customers which keeps their people, data, systems and technology infrastructure secure…”

Source: RevenueBase Database · checked Sep 29, 2026
3Partial evidenceDeeside, United KingdomHQ checked Sep 29, 202651-20039 contacts →

Partial evidence

“Remsdaq Ltd, is a UK-based hardware and software system engineering company supplying off-the-shelf and turnkey solutions for SCADA (sub-station EHV/HV/MV/LV monitoring)…”

Source: RevenueBase Database · checked Sep 29, 2026
4Indirect evidenceManchester, United KingdomHQ checked Sep 29, 202611-5036 contacts →

Indirect evidence

“Secarma exists to keep the world safe.”

Source: RevenueBase Database · checked Sep 29, 2026
5Indirect evidenceGlasgow, United KingdomHQ checked Sep 29, 202611-5034 contacts →

Indirect evidence

“We are your strategic cybersecurity partner – going beyond traditional models to deliver agile, expert-led protection tailored to the needs of regulated industries and critical…”

Source: RevenueBase Database · checked Sep 29, 2026
6Partial evidencePeterborough, United KingdomHQ checked Sep 29, 202651-20032 contacts →

Partial evidence

“Intrinsic Security is a UK-headquartered cybersecurity firm delivering 24/7 threat detection, incident response, and resilience across cloud, hybrid, OT, IoT, and identity…”

Source: RevenueBase Database · checked Sep 29, 2026
7Indirect evidenceSedgefield, United KingdomHQ checked Sep 29, 202611-5026 contacts →

Indirect evidence

“Tekgem bridges the gap between Information Technology (IT) and Operational Technology (OT).”

Source: RevenueBase Database · checked Sep 29, 2026
8Partial evidenceAberdeen, United KingdomHQ checked Sep 29, 202611-5022 contacts →

Partial evidence

“IACS Consulting are an Aberdeen based Industrial Automation Control System consultancy that specialises exclusively in cyber security for the production and safety critical…”

Source: RevenueBase Database · checked Sep 29, 2026
9Partial evidenceEast Grinstead, United KingdomHQ checked Sep 29, 202611-5022 contacts →

Partial evidence

“Blue Cube Security is a trusted UK cyber security partner with over 25 years of experience helping organisations stay secure in an increasingly complex digital world.”

Source: RevenueBase Database · checked Sep 29, 2026
10Strong evidenceLondon, United KingdomHQ checked Sep 29, 202611-5020 contacts →

Strong evidence

“Cyber Energia – Your Comprehensive Cyber Security Solution for a smart & sustainable energy market Cyber Energia is a dynamic managed security service provider offering OT / SCADA…”

Source: RevenueBase Database · checked Sep 29, 2026
11Indirect evidenceLondon, United KingdomHQ checked Sep 29, 202611-5017 contacts →

Indirect evidence

“We are a leading cybersecurity services organization with more than a decade of proven expertise in consulting, solution implementation and managed services.”

Source: RevenueBase Database · checked Sep 29, 2026
12Indirect evidenceLondon, United KingdomHQ checked Sep 29, 202611-5013 contacts →

Indirect evidence

“Our mission at SOCGuardians is to empower organizations to operate confidently in a digital world by providing cutting-edge cybersecurity services.”

Source: RevenueBase Database · checked Sep 29, 2026
13Indirect evidenceLondon, United KingdomHQ checked Sep 29, 202611-5011 contacts →

Indirect evidence

“We are a next-gen Operational Technology (OT) cybersecurity leader focused on safeguarding industrial environments so that we can fulfil our purpose: Provide best-in-class OT…”

Source: RevenueBase Database · checked Sep 29, 2026
14Partial evidenceLondon, United KingdomHQ checked Sep 29, 202611-508 contacts →

Partial evidence

“iCyberDefence is a boutique cybersecurity services firm that offers a wide range of security consulting and security engineering services with the necessary products and tools.”

Source: RevenueBase Database · checked Sep 29, 2026
15Partial evidenceBirmingham, United KingdomHQ checked Sep 29, 20261-108 contacts →

Partial evidence

“Cyber security is a subcategory of information security – specifically focusing on protecting computer systems and their components.”

Source: RevenueBase Database · checked Sep 29, 2026
16Indirect evidenceAylesbury, United KingdomHQ checked Sep 29, 202611-507 contacts →

Indirect evidence

“Kelltron Consulting Services is a globally recognized cybersecurity consulting firm with a strong presence in the United Kingdom, United States, and India.”

Source: RevenueBase Database · checked Sep 29, 2026
17Indirect evidenceEast Kilbride, United KingdomHQ checked Sep 29, 202611-505 contacts →

Indirect evidence

“Since founded on the 1st April 2005, new members of staff have joined the team, each with a vast wealth of knowledge and experience, making Cal-Tech the best in the industry.”

Source: RevenueBase Database · checked Sep 29, 2026
18Indirect evidenceRotherham, United KingdomHQ checked Sep 29, 20261-105 contacts →

Indirect evidence

“Cyber Alchemy protects the value in your business, ensuring resilience against evolving cyber threats.”

Source: RevenueBase Database · checked Sep 29, 2026
19Indirect evidenceCheltenham, United KingdomHQ checked Sep 29, 20261-104 contacts →

Indirect evidence

“At KEYSIGMA, we understand that protecting your business-critical data and systems is non-negotiable.”

Source: RevenueBase Database · checked Sep 29, 2026
20Indirect evidenceLeicester, United KingdomHQ checked Sep 29, 20261-104 contacts →

Indirect evidence

“KIT365 is a cybersecurity company based in the city of Leicester.”

Source: RevenueBase Database · checked Sep 29, 2026
21Partial evidenceLondon, United KingdomHQ checked Sep 29, 20261-103 contacts →

Partial evidence

“Trinity OT Security specialises in cybersecurity solutions, system integration and professional services for Operational Technology (OT) environments.”

Source: RevenueBase Database · checked Sep 29, 2026
22Partial evidenceMilton Keynes, United KingdomHQ checked Sep 29, 202611-503 contacts →

Partial evidence

“Founded in London in 2019, Pyramid Ledger is a leading cybersecurity firm dedicated to enhancing digital security with comprehensive and bespoke solutions.”

Source: RevenueBase Database · checked Sep 29, 2026
23Partial evidenceChesterfield, United KingdomHQ checked Sep 29, 20261-103 contacts →

Partial evidence

“We help organisations and businesses to stay secure and compliant with customised cyber security packages tailored to their needs.”

Source: RevenueBase Database · checked Sep 29, 2026
24Indirect evidenceLondon, United KingdomHQ checked Sep 29, 20261-103 contacts →

Indirect evidence

“PBOSECURE (Trading as CYBERSYS TECHNOLOGIES)** is a UK-based industrial solutions company specialising in Vapor Recovery Units (VRU), emission reduction technologies, and energy…”

Source: RevenueBase Database · checked Sep 29, 2026
25Indirect evidenceBristol, United KingdomHQ checked Sep 29, 20261-102 contacts →

Indirect evidence

“Driving a #ParadigmShift in sourcing technology specialists for global OT cybersecurity and critical infrastructure.”

Source: RevenueBase Database · checked Sep 29, 2026

Showing 25 of 73 scada security service providers based in the United Kingdom

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 476 reachable decision-makers.

Free signup · no credit card

View the full list →

Scada security service providers based in the United Kingdom at a glance

As of Sep 29, 2026
24.5%Verified-email coverage
26.6Average contacts per company
1-10Median size (employees)
39.7%Largest-city concentration · London
Sep 29, 2026Page data refreshed

Companies by employee count

1-10
42
11-50
22
51-200
6
201-500
2
501-1,000
1

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 73 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 scada security service providers, 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 “scada security service providers”. 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 scada security service providers), 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 scada security service providers, 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, 476 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 29, 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.

Scada security service providers 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 scada security service providers, 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 scada security service providers are there based in the United Kingdom?

RevenueBase identified 73 scada security service providers 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?

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

Which city has the most scada security service providers?

London leads with 29 headquartered companies, followed by Manchester (3) and Oxford (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 476 verified decision-maker contacts tracked across these 73 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 29, 2026.

Ready to reach these companies? Verified emails and direct dials for all 73 scada security service providers based in the United Kingdom. Start with a free account, no credit card.

Download this list →

Related lists

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.