Company lists · Data refreshed September 2026

Top 25 Financial services security consulting companies based in the United Kingdom

Name: Financial services security consulting 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 28, 2026 814 companies tracked

RevenueBase identified 814 financial services security consulting companies headquartered in the United Kingdom as of September 2026 and tracks 6,145 professional contacts across them, including 1,925 with verified work emails. London is the largest hub.

This list covers financial services security consulting 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, 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

814Companies

6,145Contacts tracked

1,925Verified emails

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

The 25 largest financial services security consulting companies based in the United Kingdom

Ranked by team size

Top 25 of 814 financial services security consulting companies based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to financial services security consulting companies: 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	Obrela	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	242 contacts →
	Partial evidence “Obrela Security Industries is a global provider of cyber security services.” Source: RevenueBase Database · checked Sep 28, 2026
2	Cyberfort	Partial evidence	Thatcham, United KingdomHQ checked Sep 28, 2026	51-200	159 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 28, 2026
3	Trpglobal	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	126 contacts →
	Indirect evidence “We are TRPGLOBAL, your strategic partner in helping you with the complexities of risk management.” Source: RevenueBase Database · checked Sep 28, 2026
4	Caretower An Integrity360 Company	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	97 contacts →
	Partial evidence “As an independent IT security specialist, Caretower provide comprehensive solutions to individual problems, thus allowing our recommendations to be unbiased.” Source: RevenueBase Database · checked Sep 28, 2026
5	Amethyst Risk Management	Indirect evidence	Basingstoke, United KingdomHQ checked Sep 28, 2026	11-50	85 contacts →
	Indirect evidence “Amethyst Risk Management is a leading cybersecurity consultancy supplying expert services and support to the UK Government, Defence, Operators of Essential Services, and the…” Source: RevenueBase Database · checked Sep 28, 2026
6	Foregenix	Partial evidence	Swindon, United KingdomHQ checked Sep 28, 2026	51-200	80 contacts →
	Partial evidence “When your business relies on security, compliance and a strong reputation for taking care of your customers, you need a partner that understands your ethos, your challenges and…” Source: RevenueBase Database · checked Sep 28, 2026
7	Reliance Cyber	Indirect evidence	Waterloo, United KingdomHQ checked Sep 28, 2026	51-200	80 contacts →
	Indirect evidence “At Reliance Cyber, we believe in truly partnering with our customers.” Source: RevenueBase Database · checked Sep 28, 2026
8	Saepio Information Security	Partial evidence	High Wycombe, United KingdomHQ checked Sep 28, 2026	51-200	74 contacts →
	Partial evidence “Saepio increase awareness, reduce risk and improve security in a continually evolving threat landscape.” Source: RevenueBase Database · checked Sep 28, 2026
9	Dionach By Nomios	Partial evidence	Oxford, United KingdomHQ checked Sep 28, 2026	51-200	73 contacts →
	Partial evidence “Dionach by Nomios has over 25 years of expertise in information security, supporting organisations in building resilience against ever‑evolving cyber threats.” Source: RevenueBase Database · checked Sep 28, 2026
10	NEW Link Consulting	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	69 contacts →
	Partial evidence “In complex transformation programmes, risk, regulation, financial crime, data, technology and operations no longer sit in separate silos.” Source: RevenueBase Database · checked Sep 28, 2026
11	MDSEC	Partial evidence	Macclesfield, United KingdomHQ checked Sep 28, 2026	11-50	61 contacts →
	Partial evidence “MDSec are a UK based consultancy with a passion for information security.” Source: RevenueBase Database · checked Sep 28, 2026
12	Evalian	Indirect evidence	Southampton, United KingdomHQ checked Sep 28, 2026	51-200	60 contacts →
	Indirect evidence “Many organisations are dealing with multiple frameworks, overlapping tools, disconnected ownership, and increasing pressure from regulators, customers, and boards.” Source: RevenueBase Database · checked Sep 28, 2026
13	Daintta	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	60 contacts →
	Indirect evidence “We provide deep expertise with technical and business specialists to help clients secure and protect the UK.” Source: RevenueBase Database · checked Sep 28, 2026
14	SQR Group Security Solutions LTD	Indirect evidence	Barnet, United KingdomHQ checked Sep 28, 2026	501-1,000	58 contacts →
	Indirect evidence “In today’s advanced, interconnected world, protecting the infrastructure that allows society to function is crucial.” Source: RevenueBase Database · checked Sep 28, 2026
15	Cyberlab	Partial evidence	Alderley Edge, United KingdomHQ checked Sep 28, 2026	51-200	57 contacts →
	Partial evidence “CyberLab is the UK-leading cyber security consultancy and managed services provider, trusted by over 1,200 enterprise businesses, government departments, and household names to…” Source: RevenueBase Database · checked Sep 28, 2026
16	Hexegic	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	52 contacts →
	Indirect evidence “At Hexegic we are not just passionate about protecting data through our Cyber services we are passionate about helping companies release the potential of the data they hold…” Source: RevenueBase Database · checked Sep 28, 2026
17	Purecyber Limited	Partial evidence	Cardiff, United KingdomHQ checked Sep 28, 2026	11-50	49 contacts →
	Partial evidence “PureCyber is an award-winning, expert Cyber Security Consultancy.” Source: RevenueBase Database · checked Sep 28, 2026
18	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
19	Cornerstone	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	44 contacts →
	Strong evidence “CornerStone is an award winning, independent, security and digital building consulting firm with headquarters in the UK.” Source: RevenueBase Database · checked Sep 28, 2026
20	Core To Cloud	Indirect evidence	Cirencester, United KingdomHQ checked Sep 28, 2026	11-50	39 contacts →
	Indirect evidence “We help organisations understand, optimise, and strengthen their cybersecurity.” Source: RevenueBase Database · checked Sep 28, 2026
21	Secforce LTD	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	39 contacts →
	Strong evidence “SECFORCE are vendor independent offensive security specialists providing effective business risk intelligence and strategic security consulting.” Source: RevenueBase Database · checked Sep 28, 2026
22	Lysis Group	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	38 contacts →
	Partial evidence “Since 2001, Lysis Group has established itself as a global leader in the field of Financial Crime (FC) compliance.” Source: RevenueBase Database · checked Sep 28, 2026
23	Mitigo Group	Indirect evidence	Cheadle, United KingdomHQ checked Sep 28, 2026	51-200	38 contacts →
	Indirect evidence “Mitigo Group keeps professional services firms safe from cyberattack and operationally resilient.” Source: RevenueBase Database · checked Sep 28, 2026
24	Secarma LTD	Indirect evidence	Manchester, United KingdomHQ checked Sep 28, 2026	11-50	36 contacts →
	Indirect evidence “Secarma exists to keep the world safe.” Source: RevenueBase Database · checked Sep 28, 2026
25	Cyberis	Partial evidence	Tewkesbury, United KingdomHQ checked Sep 28, 2026	11-50	34 contacts →
	Partial evidence “Cyberis are pioneers in customer-focussed information security.” 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: financial services security consulting companies. 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 financial services security consulting companies.
Partial evidence: Its own public description names part of financial services security consulting companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name financial services security consulting companies. 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 814 financial services security consulting companies based in the United Kingdom

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 1,925 reachable decision-makers.

Free signup · no credit card

View the full list →

Financial services security consulting companies based in the United Kingdom at a glance

As of Sep 28, 2026

31.3%Verified-email coverage

7.5Average contacts per company

1-10Median size (employees)

40.5%Largest-city concentration · London

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

567

11-50

188

51-200

201-500

501-1,000

10001+

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 814 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 financial services security consulting companies, 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 “financial services security consulting companies”. 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 financial services security consulting companies), 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 financial services security consulting 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 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, 1,925 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.

Financial services security consulting companies 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 financial services security consulting companies, 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 financial services security consulting companies are there based in the United Kingdom?

RevenueBase identified 814 financial services security consulting 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?

Obrela, headquartered in London, tops this list with the largest team on record.

Which city has the most financial services security consulting companies?

London leads with 330 headquartered companies, followed by Manchester (29) and Birmingham (12).

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 1,925 verified decision-maker contacts tracked across these 814 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 814 financial services security consulting companies based in the United Kingdom. Start with a free account, no credit card.

Download this list →

Related lists

Financial services security consulting companies 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.