Company lists · Data refreshed September 2026

Top 25 Zero trust architecture consulting firms based in the United Kingdom

RevenueBase identified 150 company matches for zero trust architecture consulting firms associated with the United Kingdom as of September 2026 and tracks 991 professional contacts across them, including 434 with verified work emails. London is the largest hub.

This list covers company matches for zero trust architecture consulting firms 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 29, 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 29, 2026 How this list was built
150Companies
991Contacts tracked
434Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest zero trust architecture consulting firms based in the United Kingdom

Ranked by team size
Top 25 of 150 company matches for zero trust architecture consulting firms based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 29, 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 Sep 29, 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 · Sep 29, 2026 · View company records in RevenueBase
2Exact matchLondon, United KingdomHQ recorded Sep 29, 202611-5068 contacts →

Exact match

“Sytel Reply is the Reply Company focused on Networks and Security.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
3Exact matchMacclesfield, United KingdomHQ recorded Sep 29, 202611-5061 contacts →

Exact match

“MDSec are a UK based consultancy with a passion for information security.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
4Exact matchBristol, United KingdomHQ recorded Sep 29, 202611-5024 contacts →

Exact match

“i3Secure is a cyber security and information assurance consultancy protecting the confidentiality, integrity and availability of data across defence, public and private sectors.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
5Exact matchCambridge, United KingdomHQ recorded Sep 29, 202611-5021 contacts →

Exact match

“Chaleit is a cyber security management consultancy that aligns business context with real-world capability to solve complex risks.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
6Exact matchLondon, United KingdomHQ recorded Sep 29, 202611-5020 contacts →

Exact match

“Formed in 2018, NGS (UK) Ltd are independent, Next Generation Security trusted advisors, providing all-encompassing solutions from the perimeter to the endpoint.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
7Exact matchStrand, United KingdomHQ recorded Sep 29, 202651-20020 contacts →

Exact match

“We are a trusted partner to leading organisations across the government and corporate sectors in the UK.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
8Exact matchEdinburgh, United KingdomHQ recorded Sep 29, 202611-5017 contacts →

Exact match

“We are a cyber security consultancy that specialises in security solution architecture, engineering, implementation and operational support.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
9Exact matchBelfast, United KingdomHQ recorded Sep 29, 202611-5016 contacts →

Exact match

“Cybersecurity should be integrated cohesively across the enterprise, promoting consistency, scalability, and efficiency.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
10Exact matchNewcastle Upon Tyne, United KingdomHQ recorded Sep 29, 202611-5015 contacts →

Exact match

“Protirus is an independent cybersecurity consultancy that helps large organisations protect what matters and move forward with confidence.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
11Exact matchLondon, United KingdomHQ recorded Sep 29, 202611-5015 contacts →

Exact match

“At NetraScale, we help businesses navigate the ever-evolving cybersecurity landscape with confidence.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
12Exact matchLondon, United KingdomHQ recorded Sep 29, 202611-5011 contacts →

Exact match

“At 2|SEC Consulting, we deliver an end-to-end service of cyber and information security solutions which are tailored to each client’s exact security needs.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
13Exact matchLondon, United KingdomHQ recorded Sep 29, 202611-5010 contacts →

Exact match

“Operating in the private and public sectors, Innovate IT Ltd's mission is to accelerate our clients’ ability to adopt new technology and secure their digital future.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
14Exact matchLondon, United KingdomHQ recorded Sep 29, 202611-5010 contacts →

Exact match

“Hydras is a Digital & Cloud Transformation Consultancy that specialise in Cyber Security.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
15Exact matchSouthampton, United KingdomHQ recorded Sep 29, 202611-5010 contacts →

Exact match

“NquiringMinds: a Trusted AI company, building secure AI agents NquringMind's VOLT4.AI platform helps customers develop and deploy secure AI agents on top of a solid zero trust…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
16Exact matchMaidenhead, United KingdomHQ recorded Sep 29, 20261-1010 contacts →

Exact match

“After being frustrated in the way that Cyber Security services were being delivered to organisations, Cyberhash was founded with a fresh approach to Cyber Security - keeping you…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
17Exact matchWeybridge, United KingdomHQ recorded Sep 29, 202611-509 contacts →

Exact match

“Flexible Talent Solutions: We provide highly skilled cybersecurity professionals to meet your specific needs, whether for long-term strategic projects or short-term, critical…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
18Exact matchLondon, United KingdomHQ recorded Sep 29, 20261-108 contacts →

Exact match

“Security gets designed into buildings at RIBA 2-3.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
19Exact matchLondon, United KingdomHQ recorded Sep 29, 202611-508 contacts →

Exact match

“Stratia Cyber is an independent, technology agnostic company providing high quality, pragmatic cyber security consultancy and expertise, is a founder member of the NCSC Certified…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
20Exact matchLondon, United KingdomHQ recorded Sep 29, 202611-507 contacts →

Exact match

“Navigating Microsoft Cloud security shouldn't feel like walking through fog.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
21Exact matchAylesbury, United KingdomHQ recorded Sep 29, 202611-507 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
22Exact matchWindsor, United KingdomHQ recorded Sep 29, 20261-106 contacts →

Exact match

“Be more cyber secure through better risk management.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
23Exact matchLondon, United KingdomHQ recorded Sep 29, 20261-106 contacts →

Exact match

“Mollis Group is an independent assurance consultancy.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
24Exact matchYork, United KingdomHQ recorded Sep 29, 20261-105 contacts →

Exact match

“Falx is a consultancy based in England, delivering both technology and cyber security advisory services to organisations worldwide.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
25Exact matchNorthallerton, United KingdomHQ recorded Sep 29, 202611-505 contacts →

Exact match

“We’re a Cyber Security consultancy that specialise in DevSecOps, bringing together development and security expertise.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase

Showing 25 of 150 zero trust architecture consulting firms based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 434 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Zero trust architecture consulting firms based in the United Kingdom at a glance

As of Sep 29, 2026
43.8%Verified-email coverage
6.6Average contacts per company
1-10Median size (employees)
42.7%Largest-city concentration · London
Sep 29, 2026Page data refreshed

Companies by employee count

1-10
97
11-50
42
51-200
6
201-500
4
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 150 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 “zero trust architecture consulting firms” 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 434 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 29, 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.

Zero trust architecture consulting firms by metro

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 “zero trust architecture consulting firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many zero trust architecture consulting firms are there based in the United Kingdom?

RevenueBase identified 150 company matches for zero trust architecture consulting firms 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?

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

Which city has the most zero trust architecture consulting firms?

London leads with 64 company records, followed by Manchester (5) and Bristol (4).

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 434 professional contacts with verified work emails tracked across these 150 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 29, 2026.

Ready to reach these companies? Verified emails and direct dials for all 150 zero trust architecture consulting firms 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 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.