Company lists · Data refreshed September 2026

Top 25 Drupal security specialists based in the United Kingdom

Name: Drupal security specialists 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 131 companies tracked

RevenueBase identified 131 drupal security specialists headquartered in the United Kingdom as of September 2026 and tracks 691 professional contacts across them, including 238 with verified work emails. London is the largest hub.

This list covers drupal security specialists 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

131Companies

691Contacts tracked

238Verified emails

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

The 25 largest drupal security specialists based in the United Kingdom

Ranked by team size

Top 25 of 131 drupal security specialists 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 drupal security specialists: 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	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
2	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
3	Cyber Security Specialists	Partial evidence	Altrincham, United KingdomHQ checked Sep 28, 2026	11-50	26 contacts →
	Partial evidence “Based in Manchester UK, we are an independent Cyber Security Consultancy providing Security services across a wide range of markets, from multi-national Corporate Organisations…” Source: RevenueBase Database · checked Sep 28, 2026
4	Gradian	Indirect evidence	Farnborough, United KingdomHQ checked Sep 28, 2026	11-50	22 contacts →
	Indirect evidence “Gradian offers pre-sales support, bespoke consultancy and managed services to protect your most critical assets from cyber threats.” Source: RevenueBase Database · checked Sep 28, 2026
5	Blue Cube Security LTD	Partial evidence	East Grinstead, United KingdomHQ checked Sep 28, 2026	11-50	22 contacts →
	Partial evidence “Blue Cube Security is a trusted UK cyber security partner with over 25 years of experience helping organisations stay secure in an increasingly complex digital world.” Source: RevenueBase Database · checked Sep 28, 2026
6	Aindale KTD	Indirect evidence	Huddersfield, United KingdomHQ checked Sep 28, 2026	11-50	21 contacts →
	Indirect evidence “Aindale, established in 1985, is a leading provider of IT solutions and services.” Source: RevenueBase Database · checked Sep 28, 2026
7	LMS Security	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	20 contacts →
	Partial evidence “LMS Security are a fully Independent, privately owned, Internationally recognised and accredited Security Consultancy; owned and built by Electronic and Physical Security…” Source: RevenueBase Database · checked Sep 28, 2026
8	NGS Next Generation Security	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	20 contacts →
	Partial evidence “Formed in 2018, NGS (UK) Ltd are independent, Next Generation Security trusted advisors, providing all-encompassing solutions from the perimeter to the endpoint.” Source: RevenueBase Database · checked Sep 28, 2026
9	Razorthorn Security	Strong evidence	Tunbridge Wells, United KingdomHQ checked Sep 28, 2026	11-50	19 contacts →
	Strong evidence “Razorthorn Security is a specialist cybersecurity consultancy founded in 2007, with nearly two decades of experience helping organisations protect their data, their systems and…” Source: RevenueBase Database · checked Sep 28, 2026
10	DEV Null Security	Strong evidence	Edinburgh, United KingdomHQ checked Sep 28, 2026	11-50	17 contacts →
	Strong evidence “We are a cyber security consultancy that specialises in security solution architecture, engineering, implementation and operational support.” Source: RevenueBase Database · checked Sep 28, 2026
11	CST Limited Computer Security Technology	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	17 contacts →
	Strong evidence “We are a London based specialist supplier of cyber defence solution and information security services.” Source: RevenueBase Database · checked Sep 28, 2026
12	Equilibrium Security	Partial evidence	Birmingham, United KingdomHQ checked Sep 28, 2026	11-50	9 contacts →
	Partial evidence “At Equilibrium Security, we’re a team of certified Cyber Security experts dedicated to keeping your business safe.” Source: RevenueBase Database · checked Sep 28, 2026
13	Kloudwerk	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	7 contacts →
	Partial evidence “Kloudwerk offers a game-changing approach to cyber security consulting for SMEs.” Source: RevenueBase Database · checked Sep 28, 2026
14	RM Information Security	Strong evidence	Manchester, United KingdomHQ checked Sep 28, 2026	1-10	7 contacts →
	Strong evidence “RM Information Security are a specialist penetration testing and information security consultancy based in the north of England.” Source: RevenueBase Database · checked Sep 28, 2026
15	Kelltron Consulting Services	Indirect evidence	Aylesbury, United KingdomHQ checked Sep 28, 2026	11-50	7 contacts →
	Indirect evidence “Kelltron Consulting Services is a globally recognized cybersecurity consulting firm with a strong presence in the United Kingdom, United States, and India.” Source: RevenueBase Database · checked Sep 28, 2026
16	Klaatu IT Security LTD	Partial evidence	Swindon, United KingdomHQ checked Sep 28, 2026	1-10	7 contacts →
	Partial evidence “Klaatu IT Security is an IT security consultancy and developer.” Source: RevenueBase Database · checked Sep 28, 2026
17	Secure Debug	Indirect evidence	Cranfield, United KingdomHQ checked Sep 28, 2026	11-50	6 contacts →
	Indirect evidence “Secure Debug: Your Full-Spectrum Cybersecurity Guardian!” Source: RevenueBase Database · checked Sep 28, 2026
18	Incursion Cyber Security	Partial evidence	Midsomer Norton, United KingdomHQ checked Sep 28, 2026	1-10	5 contacts →
	Partial evidence “Incursion Cyber Security is a boutique, agile, highly-accredited, and experienced consultancy which helps SMEs and enterprises strengthen their cyber security.” Source: RevenueBase Database · checked Sep 28, 2026
19	Microbrain LTD	Partial evidence	Quedgeley, United KingdomHQ checked Sep 28, 2026	1-10	4 contacts →
	Partial evidence “MICROBRAIN LTD is a small IT consulting company based out of United Kingdom, focusing on Development and Security.” Source: RevenueBase Database · checked Sep 28, 2026
20	Kit365	Indirect evidence	Leicester, United KingdomHQ checked Sep 28, 2026	1-10	4 contacts →
	Indirect evidence “KIT365 is a cybersecurity company based in the city of Leicester.” Source: RevenueBase Database · checked Sep 28, 2026
21	in.security	Partial evidence	Crewe, United KingdomHQ checked Sep 28, 2026	1-10	3 contacts →
	Partial evidence “We're in security to prevent insecurity.” Source: RevenueBase Database · checked Sep 28, 2026
22	Sentrium Security LTD	Partial evidence	Cheltenham, United KingdomHQ checked Sep 28, 2026	1-10	3 contacts →
	Partial evidence “Sentrium is a bespoke cyber security consultancy, powered by extensive business and technical expertise that provides you with the assessment and advisory services you need to…” Source: RevenueBase Database · checked Sep 28, 2026
23	Clear Loop Security	Partial evidence	Leeds, United KingdomHQ checked Sep 28, 2026	1-10	3 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 28, 2026
24	Delta Cyber Security LTD	Partial evidence	Chichester, United KingdomHQ checked Sep 28, 2026	1-10	3 contacts →
	Partial evidence “At Delta Cyber Security, our mission is simple: to put the customer first and make cyber security accessible, manageable and cost-effective for businesses of all sizes.” Source: RevenueBase Database · checked Sep 28, 2026
25	Cybvantic Limited	Partial evidence	Manchester, United KingdomHQ checked Sep 28, 2026	11-50	2 contacts →
	Partial evidence “We have a highly skilled consultative approach using the very latest in disruptive multi patented security technologies against this ever-evolving threats.” 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: drupal security specialists. 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 drupal security specialists.
Partial evidence: Its own public description names part of drupal security specialists, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name drupal security specialists. 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 131 drupal security specialists based in the United Kingdom

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 238 reachable decision-makers.

Free signup · no credit card

View the full list →

Drupal security specialists based in the United Kingdom at a glance

As of Sep 28, 2026

34.4%Verified-email coverage

5.3Average contacts per company

1-10Median size (employees)

30.5%Largest-city concentration · London

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

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 131 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 drupal security specialists, 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 “drupal security specialists”. 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 drupal security specialists), 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 drupal security specialists, 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, 238 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.

Drupal security specialists by metro

Drupal security specialists in London40

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 drupal security specialists, 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 drupal security specialists are there based in the United Kingdom?

RevenueBase identified 131 drupal security specialists 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?

Cyberlab, headquartered in Alderley Edge, tops this list with the largest team on record.

Which city has the most drupal security specialists?

London leads with 40 headquartered companies, followed by Manchester (5) and Birmingham (4).

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 238 verified decision-maker contacts tracked across these 131 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 131 drupal security specialists based in the United Kingdom. Start with a free account, no credit card.

Download this list →

Related lists

Drupal security specialists 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.