Company lists · Data refreshed September 2026

Top 25 Critical infrastructure protection services based in the United Kingdom

RevenueBase identified 426 company matches for critical infrastructure protection services associated with the United Kingdom as of September 2026 and tracks 3,375 professional contacts across them, including 736 with verified work emails. London is the largest hub.

This list covers company matches for critical infrastructure protection services associated with the United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 19, 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 RevenueBase SmartSearch · Exact Recorded Sep 19, 2026 How this list was built
426Companies
3,375Contacts tracked
736Verified emails
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The 25 largest critical infrastructure protection services based in the United Kingdom

Ranked by team size
Top 25 of 426 company matches for critical infrastructure protection services based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 19, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchWoking, United KingdomHQ recorded Sep 19, 2026201-500205 contacts →

Exact match

“Pilgrims are a global security, risk management and service support company that identifies and manages risks for clients across all sectors, including oil & gas, telecoms…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
2Exact matchThatcham, United KingdomHQ recorded Sep 19, 202651-200159 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
3Exact matchNottingham, United KingdomHQ recorded Sep 19, 2026201-500143 contacts →

Exact match

“SF Group are your local knowledge experts in risk management, security, logistics and emergency solution support.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
4Exact matchLondon, United KingdomHQ recorded Sep 19, 202651-200126 contacts →

Exact match

“We are TRPGLOBAL, your strategic partner in helping you with the complexities of risk management.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
5Exact matchPoole, United KingdomHQ recorded Sep 19, 2026201-500115 contacts →

Exact match

“Solace Global Risk began in 2010 with a simple belief: when people face risk, they need partners who act quickly and stand by their word.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
6Exact matchLondon, United KingdomHQ recorded Sep 19, 202611-5089 contacts →

Exact match

“We are proud of our unique track record.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
7Exact matchHereford., United KingdomHQ recorded Sep 19, 202651-20079 contacts →

Exact match

“Minimal Risk Consultancy is an Independent Security Services, Specialist Consultancy and Recruitment business with current expertise in:> Security Risk Consultancy > Security…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
8Exact matchPlymouth, United KingdomHQ recorded Sep 19, 2026201-50079 contacts →

Exact match

“Peregrine Risk Management is a leading provider of physical security, risk consultancy, travel risk management, security intelligence, and specialist training services.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
9Exact matchBraintree, United KingdomHQ recorded Sep 19, 202651-20075 contacts →

Exact match

“Securing your power needs to deliver your electrification plans with certainty.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
10Exact matchLondon, United KingdomHQ recorded Sep 19, 202611-5058 contacts →

Exact match

“Assist Security Group (ASG) helps clients build resilient, comprehensive security strategies that protect their people and assets, business continuity and reputation.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
11Exact matchLondon, United KingdomHQ recorded Sep 19, 2026201-50058 contacts →

Exact match

“Black Diamond Security - Safeguarding Your World.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
12Exact matchBarnet, United KingdomHQ recorded Sep 19, 2026501-1,00058 contacts →

Exact match

“In today’s advanced, interconnected world, protecting the infrastructure that allows society to function is crucial.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
13Exact matchLondon, United KingdomHQ recorded Sep 19, 202651-20048 contacts →

Exact match

“In today’s complex threat environment, businesses, individuals, and organisations require trusted partners to provide the ultimate assurance that their assets are well protected.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
14Exact matchLondon, United KingdomHQ recorded Sep 19, 202651-20044 contacts →

Exact match

“CornerStone is an award winning, independent, security and digital building consulting firm with headquarters in the UK.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
15Exact matchLondon, United KingdomHQ recorded Sep 19, 202651-20037 contacts →

Exact match

“Audere Group is a London-headquartered holistic risk advisory company founded in 2014.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
16Exact matchGlasgow, United KingdomHQ recorded Sep 19, 202611-5034 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
17Exact matchUnited KingdomHQ recorded Sep 19, 202611-5034 contacts →

Exact match

“EOS Risk Group is a UK-based corporate and private client security risk and crisis management practice, operating globally.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
18Exact matchLondon, United KingdomHQ recorded Sep 19, 202651-20033 contacts →

Exact match

“Othrys is a global strategic and risk advisory firm founded in 2016.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
19Exact matchMansfield, United KingdomHQ recorded Sep 19, 2026201-50029 contacts →

Exact match

“Secur-it Group is a leading provider of nationwide security services, fire protection and risk mitigation.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
20Exact matchLondon, United KingdomHQ recorded Sep 19, 202611-5028 contacts →

Exact match

“Priavo Security Group is an established provider of comprehensive security risk management, dedicated to safeguarding individuals, information, assets, and reputation through…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
21Exact matchCheshunt, United KingdomHQ recorded Sep 19, 202651-20027 contacts →

Exact match

“We are a strategic partner in risk management, helping businesses protect their people, property and performance through integrated security, compliance, safety and operational…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
22Exact matchSedgefield, United KingdomHQ recorded Sep 19, 202611-5026 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
23Exact matchCity Of London, United KingdomHQ recorded Sep 19, 2026501-1,00025 contacts →

Exact match

“We are an established business risk management company approaching 20 years of service to our clients.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
24Exact matchExeter, United KingdomHQ recorded Sep 19, 202611-5025 contacts →

Exact match

“Sangfroid Group is a UK registered company with its Head Office in Southwest England.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
25Exact matchLondon, United KingdomHQ recorded Sep 19, 202611-5024 contacts →

Exact match

“A core member of the Chelsea Group Security & Crisis Management Division, Security Exchange is dedicated to the provision of specialist consultancy on a worldwide basis…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase

Showing 25 of 426 critical infrastructure protection services based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 736 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Critical infrastructure protection services based in the United Kingdom at a glance

As of Sep 19, 2026
21.8%Verified-email coverage
7.9Average contacts per company
1-10Median size (employees)
35.2%Largest-city concentration · London
Sep 19, 2026Page data refreshed

Companies by employee count

1-10
263
11-50
105
51-200
38
201-500
12
501-1,000
6
10001+
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 426 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

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
Company records associated with the United Kingdom whose business descriptions match “critical infrastructure protection services” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 736 professional contacts with verified work emails across the full matched dataset. 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 19, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “critical infrastructure protection services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many critical infrastructure protection services are there based in the United Kingdom?

RevenueBase identified 426 company matches for critical infrastructure protection services associated with the United Kingdom as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Pilgrims Risk Management Group tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most critical infrastructure protection services?

London leads with 150 company records, followed by Manchester (9) and Edinburgh (6).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 736 professional contacts with verified work emails tracked across these 426 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 19, 2026.

Ready to reach these companies? Verified emails and direct dials for all 426 critical infrastructure protection services based in the United Kingdom. Start with a free account, no credit card.

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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.