Company lists · Data refreshed September 2026

Top 25 Defense AI software companies based in the United Kingdom

Name: Defense AI software 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 88 companies tracked

RevenueBase identified 88 defense AI software companies headquartered in the United Kingdom as of September 2026 and tracks 1,990 professional contacts across them, including 876 with verified work emails. London is the largest hub.

This list covers defense AI software 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

88Companies

1,990Contacts tracked

876Verified emails

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The 25 largest defense AI software companies based in the United Kingdom

Ranked by team size

Top 25 of 88 defense AI software 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 defense AI software 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	ROKE	Partial evidence	Romsey, United KingdomHQ checked Sep 28, 2026	1,001-5,000	679 contacts →
	Partial evidence “At Roke, we stand at the forefront of defence and security, delivering cutting-edge intelligence and engineering solutions that protect nations, troops, borders, and businesses.” Source: RevenueBase Database · checked Sep 28, 2026
2	Marss Group	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	97 contacts →
	Strong evidence “MARSS is a global defence and security technology company specialising in AI-enabled Command and Control (C2/C4I), autonomous mission management, and multi-domain surveillance.” Source: RevenueBase Database · checked Sep 28, 2026
3	Mind Foundry	Partial evidence	Oxford, United KingdomHQ checked Sep 28, 2026	51-200	92 contacts →
	Partial evidence “Mind Foundry is a UK sovereign applied machine learning company spun out of the University of Oxford, providing responsible solutions for Defence & National Security.” Source: RevenueBase Database · checked Sep 28, 2026
4	Hadean	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	85 contacts →
	Partial evidence “Hadean is a UK-based technology company, specialising in AI, simulation and spatial computing to provide the most accurate representation of the real-world.” Source: RevenueBase Database · checked Sep 28, 2026
5	Simcentric	Indirect evidence	Oxford, United KingdomHQ checked Sep 28, 2026	51-200	58 contacts →
	Indirect evidence “SimCentric is a technology company focused on transforming training, safety and operational decision making through innovation.” Source: RevenueBase Database · checked Sep 28, 2026
6	Whitespace	Partial evidence	Belfast, United KingdomHQ checked Sep 28, 2026	51-200	56 contacts →
	Partial evidence “Whitespace is a UK sovereign AI company helping organisations operationalise sovereign AI for smarter decisions and faster adaptation.” Source: RevenueBase Database · checked Sep 28, 2026
7	Openworks Engineering LTD	Indirect evidence	Prudhoe, United KingdomHQ checked Sep 28, 2026	51-200	55 contacts →
	Indirect evidence “Dynamic.” Source: RevenueBase Database · checked Sep 28, 2026
8	Digica	Partial evidence	Manchester, United KingdomHQ checked Sep 28, 2026	51-200	50 contacts →
	Partial evidence “85% of AI pilots die in PowerPoint.” Source: RevenueBase Database · checked Sep 28, 2026
9	Adarga	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	48 contacts →
	Strong evidence “Adarga is a leading AI company purpose-built for Defence, Security & Resilience.” Source: RevenueBase Database · checked Sep 28, 2026
10	Delian Alliance Industries	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	32 contacts →
	Indirect evidence “Delian builds accurate, low-cost GNSS-denied navigation for the platforms that define modern warfare.” Source: RevenueBase Database · checked Sep 28, 2026
11	Oxford Dynamics	Partial evidence	Harwell, United KingdomHQ checked Sep 28, 2026	11-50	26 contacts →
	Partial evidence “Working at the cutting-edge of ‘embodied intelligence’ - the convergence of AI & edge computing - Oxford Dynamics vision is to produce intelligent machines able to sense, decide…” Source: RevenueBase Database · checked Sep 28, 2026
12	Image Analyzer	Indirect evidence	Quedgeley, United KingdomHQ checked Sep 28, 2026	11-50	20 contacts →
	Indirect evidence “Image Analyzer is an artificial intelligence company specializing in visual threat recognition.” Source: RevenueBase Database · checked Sep 28, 2026
13	Sirius Digital Services	Strong evidence	Portsmouth, United KingdomHQ checked Sep 28, 2026	11-50	20 contacts →
	Strong evidence “Sirius Digital Services specialises in Software Engineering Services and AI, including 3D modelling and simulation, synthetic environments and data science, as well as…” Source: RevenueBase Database · checked Sep 28, 2026
14	Conscium	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	16 contacts →
	Partial evidence “Conscium brings together expertise across AI, neuroscience, engineering, and business to shape how intelligent systems evolve.” Source: RevenueBase Database · checked Sep 28, 2026
15	Vizgard	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	13 contacts →
	Partial evidence “Vizgard is a multi-award-winning SME building a safer future by automating real-time Security and Defence optical systems that traditionally require repetitive or prolonged…” Source: RevenueBase Database · checked Sep 28, 2026
16	Accelerate Performance With Scotai	Indirect evidence	Linlithgow, United KingdomHQ checked Sep 28, 2026	11-50	13 contacts →
	Indirect evidence “Do you want to improve the performance of your team securely, accurately and without compromising your data?” Source: RevenueBase Database · checked Sep 28, 2026
17	Intellium AI	Strong evidence	Bristol, United KingdomHQ checked Sep 28, 2026	11-50	12 contacts →
	Strong evidence “Intellium AI is the UK's sovereign defence AI company.” Source: RevenueBase Database · checked Sep 28, 2026
18	ISS Global	Partial evidence	Sandwich, United KingdomHQ checked Sep 28, 2026	11-50	10 contacts →
	Partial evidence “AI sovereignty, delivered in practice.” Source: RevenueBase Database · checked Sep 28, 2026
19	Spaice	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	9 contacts →
	Strong evidence “SPAICE is a software-first defence company building GNSS-independent navigation and geospatial intelligence for unmanned air and space systems.” Source: RevenueBase Database · checked Sep 28, 2026
20	Qumodo	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	5 contacts →
	Indirect evidence “Humans and machines are better together.” Source: RevenueBase Database · checked Sep 28, 2026
21	Agentycs	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	5 contacts →
	Strong evidence “Agentycs is a leading-edge, agentic AI and data analytics platform, engineered to meet the exacting demands of Government, Defence and Enterprise.” Source: RevenueBase Database · checked Sep 28, 2026
22	Polygeist	Strong evidence	United KingdomHQ checked Sep 28, 2026	1-10	4 contacts →
	Strong evidence “Polygeist builds world-leading AI technology for defence, national security, law enforcement, and healthcare customers.” Source: RevenueBase Database · checked Sep 28, 2026
23	Camulos	Indirect evidence	Gloucestershire, United KingdomHQ checked Sep 28, 2026	1-10	4 contacts →
	Indirect evidence “WE ARE HIRING!” Source: RevenueBase Database · checked Sep 28, 2026
24	Mind Mage	Indirect evidence	Cambridge, United KingdomHQ checked Sep 28, 2026	1-10	4 contacts →
	Indirect evidence “An innovative deep technology company working on the frontiers of A.I.” Source: RevenueBase Database · checked Sep 28, 2026
25	Logically	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	3 contacts →
	Indirect evidence “Logically is a technology company combining advanced artificial intelligence with human expertise to tackle harmful and problematic online content at scale.” 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: defense AI software 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 defense AI software companies.
Partial evidence: Its own public description names part of defense AI software companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name defense AI software 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 88 defense AI software companies based in the United Kingdom

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Defense AI software companies based in the United Kingdom at a glance

As of Sep 28, 2026

44.0%Verified-email coverage

22.6Average contacts per company

11-50Median size (employees)

51.1%Largest-city concentration · London

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

1,001-5,000

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 88 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 defense AI software 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 “defense AI software 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 defense AI software 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 defense AI software 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, 876 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.

Defense AI software companies by metro

Defense AI software companies in London45

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 defense AI software 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 defense AI software companies are there based in the United Kingdom?

RevenueBase identified 88 defense AI software 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?

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

Which city has the most defense AI software companies?

London leads with 45 headquartered companies, followed by Oxford (5) and Edinburgh (3).

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 876 verified decision-maker contacts tracked across these 88 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.

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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 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.