Company lists · Data refreshed September 2026

Top 25 High net worth security firms based in London, United Kingdom

Name: High net worth security firms based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 176 companies tracked

RevenueBase identified 176 high net worth security firms headquartered in London, United Kingdom as of September 2026 and tracks 988 professional contacts across them, including 87 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers high net worth security firms headquartered in London, 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 28, 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 28, 2026 86% judged on-target in blind review

176Companies

988Contacts tracked

87Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest high net worth security firms based in London, United Kingdom

Ranked by team size

Top 25 of 176 high net worth security firms based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to high net worth security firms: 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	Lead Element Security Group	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	75 contacts →
	Partial evidence “We are Veteran Owned, Veteran Operated Security company based in London (HQ), with operation nationwide.” Source: RevenueBase Database · checked Sep 28, 2026
2	Frankton Group LTD	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	48 contacts →
	Indirect evidence “In today’s complex threat environment, businesses, individuals, and organisations require trusted partners to provide the ultimate assurance that their assets are well protected.” Source: RevenueBase Database · checked Sep 28, 2026
3	Capstar	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	30 contacts →
	Partial evidence “Capstar provides technology-enabled threat, risk and security services to private and corporate clients.” Source: RevenueBase Database · checked Sep 28, 2026
4	Priavo Security	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	28 contacts →
	Partial evidence “Priavo Security Group is an established provider of comprehensive security risk management, dedicated to safeguarding individuals, information, assets, and reputation through…” Source: RevenueBase Database · checked Sep 28, 2026
5	Line Security Services LTD	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	17 contacts →
	Partial evidence “As a security services provider, protecting people and assets is our top priority.” Source: RevenueBase Database · checked Sep 28, 2026
6	Amity Group INC Amity Security	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	14 contacts →
	Indirect evidence “The definition of Amity is peaceful and friendly, as such we aim to live up to our name.” Source: RevenueBase Database · checked Sep 28, 2026
7	Fahrenheit Security	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	13 contacts →
	Strong evidence “Fahrenheit Security Ltd supplies total soft security solutions to high value, high footfall and prestigious environments.” Source: RevenueBase Database · checked Sep 28, 2026
8	Intelligent Protection International Limited	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	12 contacts →
	Indirect evidence “Intelligent Protection International Limited provides Close Protection Bodyguards and Executive Protection Services to meet our clients requirements.” Source: RevenueBase Database · checked Sep 28, 2026
9	Umbra International Group	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	11 contacts →
	Partial evidence “At UMBRA, we believe that true security extends far beyond protection.” Source: RevenueBase Database · checked Sep 28, 2026
10	Quest Sports Investigations, Intelligence, Security	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	10 contacts →
	Strong evidence “Quest provides bespoke investigations, integrity and security services to corporate clients, sports organisations, and high net worth individuals.” Source: RevenueBase Database · checked Sep 28, 2026
11	Sec-Tech UK EST 2006	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	10 contacts →
	Partial evidence “We are security specialists working with Corporate & Private clients keeping them, their loved ones, their staff, their businesses, their properties and their assets safe.” Source: RevenueBase Database · checked Sep 28, 2026
12	Trojan Consultancy	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	10 contacts →
	Indirect evidence “Trojan Consultancy is a UK-based protective risk management firm advising family offices, private principals, and organisations whose wealth, visibility, or operational profile…” Source: RevenueBase Database · checked Sep 28, 2026
13	Spartan Elite Security	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	10 contacts →
	Partial evidence “Spartan Elite Security is a Close Protection company based in Mayfair, London, providing discreet personal protection for A-List clients, Families, Executives, Celebrities, and…” Source: RevenueBase Database · checked Sep 28, 2026
14	Barham Protection Services BPS LTD	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	8 contacts →
	Partial evidence “Barham Protection Services (BPS Group) Ltd is a private limited company offering bespoke, professional, and discreet security services, providing former Crown servants and…” Source: RevenueBase Database · checked Sep 28, 2026
15	Valkyrie GB Limited	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	6 contacts →
	Partial evidence “At Valkyrie, our mission is rooted in a commitment to safeguarding our clients with the highest standards of security and discretion.” Source: RevenueBase Database · checked Sep 28, 2026
16	Fourone Associates LTD	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	6 contacts →
	Partial evidence “FourOne Associates is an independent privately owned security company based in London, United Kingdom but with the capability to operate worldwide.” Source: RevenueBase Database · checked Sep 28, 2026
17	Guildstone Associates LTD	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	6 contacts →
	Indirect evidence “Guildstone Associates is an innovative client focused company that looks to build enduring relationships with our corporate and private clients via the provision of individually…” Source: RevenueBase Database · checked Sep 28, 2026
18	Defuse Global	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	4 contacts →
	Indirect evidence “Defuse Global is a boutique advisory practice.” Source: RevenueBase Database · checked Sep 28, 2026
19	I & S Services LTD	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	4 contacts →
	Partial evidence “Founded in 2006, I&S has established itself as a trusted agency, building relations with some of the most well respected and high-profile venues and organisations in the…” Source: RevenueBase Database · checked Sep 28, 2026
20	T-Risk	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	4 contacts →
	Indirect evidence “We HELP clients and travelers to identify potential physical risks to their business or travels and create and implement the most effective solutions.” Source: RevenueBase Database · checked Sep 28, 2026
21	Templar Protection	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	3 contacts →
	Indirect evidence “Templar Protection is a bespoke risk management consultancy based in London, operating globally.” Source: RevenueBase Database · checked Sep 28, 2026
22	W&a Consular World	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	3 contacts →
	Indirect evidence “Welcome to W&A Consular World®, a top-tier diplomatic support and lifestyle management consultancy for the elite.” Source: RevenueBase Database · checked Sep 28, 2026
23	Just Protect IT Limited	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	2 contacts →
	Partial evidence “We have experience in the realization of physical protection of the people(personal security) as well as preciousness in place or transport, and we have often been the bearers of…” Source: RevenueBase Database · checked Sep 28, 2026
24	HMH Security Consultants	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	2 contacts →
	Strong evidence “HMH Consulting LLC is a Texas-based security consultancy operating at the intersection of physical and cyber risk, serving high-net-worth individuals, luxury retailers…” Source: RevenueBase Database · checked Sep 28, 2026
25	Hidden Security LTD	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	2 contacts →
	Indirect evidence “Company Profile Hidden is unique.” Source: RevenueBase Database · checked Sep 28, 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: high net worth security firms. 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 high net worth security firms.
Partial evidence: Its own public description names part of high net worth security firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name high net worth security firms. 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 176 high net worth security firms based in London, United Kingdom

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 87 reachable decision-makers.

Free signup · no credit card

View the full list →

High net worth security firms based in London, United Kingdom at a glance

As of Sep 28, 2026

8.8%Verified-email coverage

5.6Average contacts per company

11-50Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

Email recency for this list is measured across the whole United Kingdom list rather than for London, so it is reported there. Company counts and contact totals on this page are exact for London, over 176 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 high net worth security firms, 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 London, United Kingdom whose own description of what they do matches “high net worth security firms”. 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 high net worth security firms), 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 high net worth security firms, and records with no verified work email. Companies headquartered outside London 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, 87 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 28, 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 high net worth security firms, 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 high net worth security firms are there based in London, United Kingdom?

RevenueBase identified 176 high net worth security firms headquartered in London, 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?

Lead Element Security Group, headquartered in London, tops this list with the largest team on record.

Which city in the United Kingdom has the most high net worth security firms?

London leads the United Kingdom with 176 headquartered companies, followed by Birmingham (6) and Manchester (6).

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 87 verified decision-maker contacts tracked across these 176 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 28, 2026.

Ready to reach these companies? Verified emails and direct dials for all 176 high net worth security firms based in London, United Kingdom. Start with a free account, no credit card.

Download this list →

Related lists

High net worth security firms by geography

Browse the directory

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.