Company lists · Data refreshed September 2026

Top 25 Defense technology software startups based in the United Kingdom

RevenueBase identified 67 company matches for defense technology software startups associated with the United Kingdom as of September 2026 and tracks 3,118 professional contacts across them, including 935 with verified work emails and 667 with mobile numbers. London is the largest hub.

This list covers company matches for defense technology software startups 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 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 Sep 1, 2026 How this list was built
67Companies
3,118Contacts tracked
935Verified emails
667Mobile numbers
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The 25 largest defense technology software startups based in the United Kingdom

Ranked by team size
Top 25 of 67 company matches for defense technology software startups based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 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 matchManchester, United Kingdom1,001-5,000684 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
2Exact matchLondon, United Kingdom501-1,000674 contacts →

Exact match

“Metrea, formerly Meta Aerospace, offers a deep stack of defense capabilities and services for our customers and partners, allowing them to anticipate, secure, and defend their…”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
3Exact matchLondon, United Kingdom1,001-5,000635 contacts →

Exact match

“Everfox delivers trusted connectivity to protect the world's most critical environments, safeguarding the sensitive information behind decision advantage.”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
4Exact matchLincoln, United Kingdom201-500633 contacts →

Exact match

“MASS, part of the Cohort plc group, helps you realise the value of your data.”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
5Exact matchUnited Kingdom51-20058 contacts →

Exact match

“Calytrix Technologies is a Training and Simulation company specialising in developing and delivering integrated training solutions.”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
6Exact matchLondon, United Kingdom51-20058 contacts →

Exact match

“Since 2006, Brotecs Technologies has been a global leader (U.S.”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
7Exact matchBordon, United Kingdom11-5033 contacts →

Exact match

“Standing at the crossroads of designing, building, testing and deploying secure solutions for Defence.”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
8Exact matchManchester, United Kingdom11-5023 contacts →

Exact match

“At Hamiltonian Dynamics we have a secure by design engineering mindset built into the core of our company.”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
9Exact matchLlanishen Cardiff South, United Kingdom11-5020 contacts →

Exact match

“Our purpose: We foster a forward-thinking, multi-disciplinary organisation that continues to attract talented people and collaborates with like-minded organisations to make a…”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
10Exact matchGreat Malvern, United Kingdom11-5020 contacts →

Exact match

“From 2003 to 2023 the borwell team delivered software and IT solutions to the UK MoD and to UK Government departments, which were 'secure by design'.”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
11Exact matchLondon, United Kingdom11-5019 contacts →

Exact match

“At Disruptive Industries, we believe in going beyond-beyond data, beyond limits, beyond the ordinary.”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
12Exact matchPortsmouth, United Kingdom11-5018 contacts →

Exact match

“Sirius Digital Services specialises in Software Engineering Services and AI, including 3D modelling and simulation, synthetic environments and data science, as well as…”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
13Exact matchLondon, United Kingdom51-20017 contacts →

Exact match

“The Exsel Group is a leading independent defence technology solutions company – providing engineering solutions, technology systems and support services to Defence and Industry…”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
14Exact matchNewtown Wales, United Kingdom11-5014 contacts →

Exact match

“We design, build, and deliver secure digital systems for defence, national security, and critical national infrastructure.”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
15Exact matchBristol, United Kingdom11-5012 contacts →

Exact match

“We are a small, dynamic product and services company based in Bristol, UK.”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
16Exact matchEast Grinstead, United Kingdom11-5011 contacts →

Exact match

“At Igence, our 20+ years experience with 500+ man years of cumulative software capabilities enables us to modernise systems, integrate software packages, enable visualisation of…”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
17Exact matchBristol, United Kingdom11-5011 contacts →

Exact match

“Cirrus Software Solutions provides the UK government with expertise in delivering high-quality secure software and systems engineering with a particular focus on transitioning to…”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
18Exact matchRichmond, United Kingdom1-1011 contacts →

Exact match

“Global leaders in digital interoperability in the battlespace.”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
19Exact matchCheltenham, United Kingdom11-5010 contacts →

Exact match

“We're a specialised supplier providing cyber security research, engineering services and training.”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
20Exact matchEdinburgh, United Kingdom11-506 contacts →

Exact match

“Welcome to DevNack - Your trusted partner for bespoke software solutions.”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
21Exact matchDumfries, United Kingdom11-504 contacts →

Exact match

“DEFENCE AND SECURITY SOLUTIONS FOR A COMPLEX WORLD Developing and delivering highly impactful technical solutions through the deployment of innovative technologies, techniques…”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
22Exact matchLondon, United Kingdom1-104 contacts →

Exact match

“Ultra Horizon Ltd is a cyber security company comprised of computer scientists who design bespoke security solutions for the maritime and defence sector.”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
23Exact matchLondon, United Kingdom1-102 contacts →

Exact match

“To thrive in today’s world you need reliable, secure, well-designed software – so you can focus on your core business.”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
24Exact matchUnited Kingdom1-102 contacts →

Exact match

“Harmonic Software Systsems is an embedded software engineering company that fixes, develops and tests embedded software for the aerospace & defence industry specialising in…”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
25Exact matchNew Waltham, United Kingdom1-102 contacts →

Exact match

“Stopping hackers and creating secure software since 2015 - to the fintech, banking and aerospace industry.”

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

Showing 25 of 67 defense technology software startups based in the United Kingdom

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Defense technology software startups based in the United Kingdom at a glance

As of Sep 1, 2026
30.0%Verified-email coverage
21.4%Mobile-number coverage
46.5Average contacts per company
11-50Median size (employees)
32.8%Largest-city concentration · London
Sep 1, 2026Page data refreshed

Companies by employee count

1-10
31
11-50
25
51-200
4
201-500
2
501-1,000
1
1,001-5,000
2

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 “defense technology software startups” 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 935 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 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 “defense technology software startups”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many defense technology software startups are there based in the United Kingdom?

RevenueBase identified 67 company matches for defense technology software startups 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?

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

Which city has the most defense technology software startups?

London leads with 22 company records, followed by Manchester (6) and Edinburgh (2).

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 935 professional contacts with verified work emails tracked across these 67 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 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.