Company lists · Data refreshed September 2026
Top 25 Naval systems integration firms based in the United Kingdom
RevenueBase identified 78 naval systems integration firms headquartered in the United Kingdom as of September 2026 and tracks 2,485 professional contacts across them, including 783 with verified work emails. London is the largest hub.
This list covers naval systems integration firms 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 29, 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.
The 25 largest naval systems integration firms based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 392 contacts → | ||||
Partial evidence “For over 60 years, SEA has delivered research, development, manufacturing, training, and support of complex maritime systems to the Royal Navy, international partners, and…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 279 contacts → | ||||
Indirect evidence “Sperry Marine provides the commercial and defence maritime industry with Navigation Solutions that excel in efficiency, reliability and safety.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 176 contacts → | ||||
Partial evidence “Defence Leaders around the world work with Chess for market-leading, reliable defence systems.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 120 contacts → | ||||
Indirect evidence “STS Defence, a part of the Cicor Group, is a UK-based engineering and technology company specialising in mission-critical, secure communications & networks, electronic warfare &…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 76 contacts → | ||||
Partial evidence “CMS2 has over 60-years’ experience of designing, developing, manufacturing and supporting atmosphere management and life support systems for submarines and other critical…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 6 | 76 contacts → | ||||
Indirect evidence “High-performance dual-use composite littoral platforms for defence and commercial application in the maritime industry.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 36 contacts → | ||||
Indirect evidence “We solve the defence challenges of today and tomorrow, enabling navies to dominate the underwater battlespace through next generation situational awareness technology.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 28 contacts → | ||||
Indirect evidence “At RAD, we're redefining what modern vessels can do.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 27 contacts → | ||||
Indirect evidence “Electrical Solutions for the most demanding marine environments • Electrical Control and Distribution Panels • Ruggedised Electrical/Electronic Enclosures and Cabinets • Embarked…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 24 contacts → | ||||
Partial evidence “Fleet Readiness Through Integrated Logistics Support (ILS) With over 60 years of experience,"Isherwoods", a CMN NAVAL subsidiary, is a trusted leader in Integrated Logistics…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 23 contacts → | ||||
Partial evidence “MarineGuard is recognised as the industry leader for the integration of leading edge technology-based superyacht security.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 20 contacts → | ||||
Partial evidence “Wavefront Systems is now part of Forcys.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 17 contacts → | ||||
Partial evidence “Diverse Yachts and C-Designs merge into Diverse Performance Systems Diverse Yachts is a leading supplier of custom marine electronics, technical hardware, and load cells, while…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 12 contacts → | ||||
Indirect evidence “OSD-IMT is an integrated design company with solid engineering capacity and a strong presence in the offshore markets.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 12 contacts → | ||||
Indirect evidence “USP Maritime is an independent marine design consultancy based on the Solent.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 10 contacts → | ||||
Partial evidence “Vectis Marine Design is a naval architecture consultancy that specialises in naval architecture, structural engineering, mechanical engineering, and design analysis.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 9 contacts → | ||||
Indirect evidence “SMART Technology Advisers is the leading independent technology consultancy specialising in superyachts and high-end residences.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 9 contacts → | ||||
Partial evidence “NAVAL SOLUTIONS is a Consultancy company based out of Bristol UK specialising in Naval and Nuclear Engineering.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 8 contacts → | ||||
Partial evidence “We consist of a team of highly skilled engineers, experienced in the design and build of underwater machinery and integration to ship.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 8 contacts → | ||||
Partial evidence “Marine Data Systems Limited, a British multi award-winning manufacturer of marine navigation and control systems for civil, defence and government agencies.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 8 contacts → | ||||
Indirect evidence “We deliver end to end marine engineering for commercial, pleasure and defence vessels.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 7 contacts → | ||||
Strong evidence “Steller Systems is a leading independent consultancy practice specialising in Naval Architecture, Marine Engineering and Systems Engineering.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 6 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 6 contacts → | ||||
Strong evidence “Fleetwind Ltd is an ISO 9001-accredited maritime systems engineering company specialising in the integration and sustainment of complex naval platforms and systems.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 25 | 5 contacts → | ||||
Partial evidence “WMD is a professional naval architecture and consultancy business based in Hamble-Le-Rice near Southampton, UK.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
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: naval systems integration firms. 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 naval systems integration firms.
- Partial evidence
- Its own public description names part of naval systems integration firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name naval systems integration firms. 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 78 naval systems integration firms based in the United Kingdom
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 783 reachable decision-makers.
Free signup · no credit card
Naval systems integration firms based in the United Kingdom at a glance
As of Sep 29, 2026Companies by employee count
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 78 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 naval systems integration firms, 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 “naval systems integration firms”. 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 naval systems integration firms), 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 naval systems integration firms, 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, 783 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 29, 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.
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 naval systems integration firms, 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 naval systems integration firms are there based in the United Kingdom?
RevenueBase identified 78 naval systems integration firms 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?
Systems Engineering & Assessment LTD, headquartered in Beckington, tops this list with the largest team on record.
Which city has the most naval systems integration firms?
London leads with 9 headquartered companies, followed by Southampton (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 the top results, verified emails and direct dials included. Upgrading unlocks all 783 verified decision-maker contacts tracked across these 78 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 29, 2026.
Ready to reach these companies? Verified emails and direct dials for all 78 naval systems integration firms based in the United Kingdom. Start with a free account, no credit card.
Download this list →Related lists
Naval systems integration firms by geography
- Naval systems integration firms based in Australia
- Naval systems integration firms based in Brazil
- Naval systems integration firms based in Canada
- Naval systems integration firms based in France
- Naval systems integration firms based in Germany
- Naval systems integration firms based in India
- Naval systems integration firms based in Italy
- Naval systems integration firms based in the Netherlands
- Naval systems integration firms based in Spain
- Naval systems integration firms based in Türkiye
- Naval systems integration firms based in the United States
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.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Naval systems integration firms based in Australia
- Naval systems integration firms based in Brazil
- Naval systems integration firms based in Canada
- Naval systems integration firms based in France
- Naval systems integration firms based in Germany
- Naval systems integration firms based in India