Company lists · Data refreshed October 2026

Top 19 Information security consultancies based in Leeds, United Kingdom

RevenueBase identified 28 company matches for information security consultancies associated with Leeds, United Kingdom as of October 2026 and tracks 532 professional contacts across them, including 302 with verified work emails. Across the United Kingdom, London is the largest hub for this category (604 companies); Leeds has 28.

This list covers company matches for information security consultancies associated with Leeds, 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 October 1, 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 Oct 1, 2026 How this list was built
28Companies
532Contacts tracked
302Verified emails
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The 19 largest information security consultancies based in Leeds, United Kingdom

Ranked by team size
Top 19 of 28 company matches for information security consultancies based in Leeds, United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 1, 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 matchLeeds, United KingdomHQ recorded Oct 1, 2026201-500260 contacts →

Exact match

“We are a global boutique, specializing exclusively in the convergence of identity-driven security and networking.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
2Exact matchLeeds, United KingdomHQ recorded Oct 1, 202651-20090 contacts →

Exact match

“Solutions | Testing | Knowledge Helping You Protect Your Business From Cyber Attackers Your security and compliance partner, delivering trust worldwide Cognisys are your trusted…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
3Exact matchLeeds, United KingdomHQ recorded Oct 1, 202611-5039 contacts →

Exact match

“Data Protection People are specialists in Data Protection and Information Security.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
4Exact matchLeeds, United KingdomHQ recorded Oct 1, 202611-5031 contacts →

Exact match

“A UK based organisation protecting organisations from cyber attacks with our CREST certified 24x7 UK SOC and offensive security services.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
5Exact matchLeeds, United KingdomHQ recorded Oct 1, 202611-5019 contacts →

Exact match

“Halo I.S is not just another cybersecurity organization based in the UK; we're a testament to evolution and client-centric innovation.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
6Exact matchLeeds, United KingdomHQ recorded Oct 1, 202611-5015 contacts →

Exact match

“At Sycom Integrated Solutions, we architect future-ready organisations through smart strategy, secure systems, and skilled leadership.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
7Exact matchLeeds, United KingdomHQ recorded Oct 1, 202611-5013 contacts →

Exact match

“DCR Partners is a niche consultancy that specialises in working with our clients to improve their return on investment in cyber, technology and digital tools whilst managing the…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
8Exact matchLeeds, United KingdomHQ recorded Oct 1, 202651-20011 contacts →

Exact match

“We are a team of passionate people focused on improving security and business performance through innovative and disruptive products.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
9Exact matchLeeds, United KingdomHQ recorded Oct 1, 202611-5010 contacts →

Exact match

“From cyber security, through to safeguarding and compliance, we provide digital security solutions perfectly designed to suit any requirement.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
10Exact matchLeeds, United KingdomHQ recorded Oct 1, 20261-105 contacts →

Exact match

“Security standards like ISO27001 can help.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
11Exact matchLeeds, United KingdomHQ recorded Oct 1, 20261-105 contacts →

Exact match

“We offer outstanding independent IT advice and services for organisations.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
12Exact matchLeeds, United KingdomHQ recorded Oct 1, 20261-104 contacts →

Exact match

“Our unbridled passion for Inspiring Cyber Wellbeing is at our core.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
13Exact matchLeeds, United KingdomHQ recorded Oct 1, 202611-504 contacts →

Exact match

“At Cyber Security Partners (CSP) we specialise in the provision of Cyber Security Consultancy, Data Protection and Certification and Compliance services including Risk Assessment…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
14Exact matchLeeds, United KingdomHQ recorded Oct 1, 20261-104 contacts →

Exact match

“Lakebridge is a business consultancy that specialises in Identity and Access Management (IAM) for enterprise and multi-organisation solutions.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
15Exact matchLeeds, United KingdomHQ recorded Oct 1, 20261-103 contacts →

Exact match

“Helping you do business securely”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
16Exact matchLeeds, United KingdomHQ recorded Oct 1, 20261-103 contacts →

Exact match

“Clear Loop Security is a Vulnerability Management Solution vendor and a forward-looking cyber and information security consultancy, focused on the real challenges of protecting…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
17Exact matchLeeds, United KingdomHQ recorded Oct 1, 20261-102 contacts →

Exact match

“e2e Cloud IT, founded in 2011 in United Kingdom has been providing top consulting services to the global business to resolve the critical business problems and come up with…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
18Exact matchLeeds, United KingdomHQ recorded Oct 1, 20261-101 contacts →

Exact match

“SHOKA consulting provides a virtual Chief Information Security Officer (vCISO) to advise the boards of Social Enterprises in the UK, helping them to 'survive' in CyberSpace.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
19Exact matchLeeds, United KingdomHQ recorded Oct 1, 20261-101 contacts →

Exact match

“Keeping your data and technology well-ordered and safe.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase

Showing 19 of 28 information security consultancies based in Leeds, United Kingdom

See the full list, filter by size, metro and specialty, and access 302 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Information security consultancies based in Leeds, United Kingdom at a glance

As of Oct 1, 2026
56.8%Verified-email coverage
19.0Average contacts per company
1-10Median size (employees)
Oct 1, 2026Page data refreshed

Companies by employee count

1-10
18
11-50
7
51-200
2
201-500
1

Email recency for this list is measured across the whole United Kingdom list rather than for Leeds, so it is reported there. Company counts and contact totals on this page are exact for Leeds, over 28 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 Leeds, United Kingdom whose business descriptions match “information security consultancies” 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 302 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 October 1, 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 “information security consultancies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many information security consultancies are there based in Leeds, United Kingdom?

RevenueBase identified 28 company matches for information security consultancies associated with Leeds, United Kingdom as of October 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?

Xalient tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in the United Kingdom has the most information security consultancies?

London leads the United Kingdom with 604 company records, followed by Manchester (48) and Leeds (28).

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 302 professional contacts with verified work emails tracked across these 28 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 October 1, 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.