Company lists · Data refreshed September 2026

Top 25 Marine electronics companies based in the United Kingdom

Name: Marine electronics 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 15, 2026 276 companies tracked

RevenueBase identified 276 marine electronics companies headquartered in the United Kingdom as of September 2026 and tracks 2,738 professional contacts across them, including 964 with verified work emails. Southampton is the largest hub.

This list covers marine electronics 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 15, 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 15, 2026 86% judged on-target in blind review

276Companies

2,738Contacts tracked

964Verified emails

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The 25 largest marine electronics companies based in the United Kingdom

Ranked by team size

Top 25 of 276 marine electronics companies based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 15, 2026. RevenueBase Smart Search rates how each company's information relates to marine electronics 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	Raymarine	Strong evidence	Fareham, United KingdomHQ checked Sep 15, 2026	201-500	448 contacts →
	Strong evidence “Teledyne Raymarine, a world leader in marine electronics, develops and manufactures the most comprehensive range of electronic equipment for the recreational boating and light…” Source: RevenueBase Database · checked Sep 15, 2026
2	Sperry Marine	Partial evidence	New Malden, United KingdomHQ checked Sep 15, 2026	201-500	279 contacts →
	Partial 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 15, 2026
3	SRT Marine Systems PLC	Partial evidence	Midsomer Norton, United KingdomHQ checked Sep 15, 2026	51-200	129 contacts →
	Partial evidence “SRT Marine Systems PLC is a global leader and innovator in maritime surveillance, intelligence, navigation safety and situational awareness.” Source: RevenueBase Database · checked Sep 15, 2026
4	Lewmar	Indirect evidence	Havant, United KingdomHQ checked Sep 15, 2026	501-1,000	122 contacts →
	Indirect evidence “Lewmar is part of Lippert, a global supplier of yacht equipment to the world's leading boat builders.” Source: RevenueBase Database · checked Sep 15, 2026
5	Mcgeoch Technology Limited	Indirect evidence	Birmingham, United KingdomHQ checked Sep 15, 2026	51-200	54 contacts →
	Indirect evidence “McGeoch Technology specialises in the design and manufacture of high-quality electrical control and instrumentation systems and specialist lighting for both land and sea…” Source: RevenueBase Database · checked Sep 15, 2026
6	Berthon	Indirect evidence	Lymington, United KingdomHQ checked Sep 15, 2026	51-200	49 contacts →
	Indirect evidence “Berthon has been trading from our riverside site in Lymington since 1877.” Source: RevenueBase Database · checked Sep 15, 2026
7	The Seaking Group	Partial evidence	Birkenhead, United KingdomHQ checked Sep 15, 2026	51-200	46 contacts →
	Partial evidence “The SeaKing Group offers specialist electrical engineering services to the marine, industrial, commercial, military and offshore sectors.” Source: RevenueBase Database · checked Sep 15, 2026
8	Coda Octopus Products	Indirect evidence	Edinburgh, United KingdomHQ checked Sep 15, 2026	51-200	41 contacts →
	Indirect evidence “Coda Octopus is a global leader and specialist in underwater technologies including being the patent holder for the real-time 3D sonar, the Echoscope®.” Source: RevenueBase Database · checked Sep 15, 2026
9	Ocean Signal Limited	Partial evidence	Margate, United KingdomHQ checked Sep 15, 2026	51-200	38 contacts →
	Partial evidence “Ocean Signal products are designed to meet or exceed the technical requirements of the International Maritime Organisation (SOLAS), International Electrotechnical Commission…” Source: RevenueBase Database · checked Sep 15, 2026
10	Energy Solutions UK LTD	Partial evidence	Aylesford, United KingdomHQ checked Sep 15, 2026	51-200	37 contacts →
	Partial evidence “Energy Solutions (UK) Ltd designs, manufactures and supplies integrated power, monitoring and control systems for marine, specialist vehicle, off‑grid and industrial applications…” Source: RevenueBase Database · checked Sep 15, 2026
11	MJR Power & Automation	Partial evidence	Thornaby, United KingdomHQ checked Sep 15, 2026	11-50	35 contacts →
	Partial evidence “MJR Power & Automation offers a comprehensive range of Marine Electrical Engineering Services including: Marine Electrical Consultancy, Marine Electrical & Automation Design…” Source: RevenueBase Database · checked Sep 15, 2026
12	SMRT	Strong evidence	Anlaby, United KingdomHQ checked Sep 15, 2026	11-50	33 contacts →
	Strong evidence “Part of Wescom Group, sMRT is the world's leading producer of electronic distress signals, through our sMRT range of Maritime Survivor Locating Devices (MSLD).” Source: RevenueBase Database · checked Sep 15, 2026
13	Alfatronix LTD	Indirect evidence	Poole, United KingdomHQ checked Sep 15, 2026	51-200	29 contacts →
	Indirect evidence “Power.” Source: RevenueBase Database · checked Sep 15, 2026
14	Vita Power	Partial evidence	Southampton, United KingdomHQ checked Sep 15, 2026	11-50	29 contacts →
	Partial evidence “Vita is a marine technology company that develops all-electric powertrains for electric boats.” Source: RevenueBase Database · checked Sep 15, 2026
15	RAD Propulsion	Indirect evidence	Sarisbury Green, United KingdomHQ checked Sep 15, 2026	11-50	28 contacts →
	Indirect evidence “At RAD, we're redefining what modern vessels can do.” Source: RevenueBase Database · checked Sep 15, 2026
16	Golden Arrow Marine	Partial evidence	Southampton, United KingdomHQ checked Sep 15, 2026	51-200	27 contacts →
	Partial evidence “Golden Arrow Marine - More Than Marine Engineers With branches in Poole, Southampton, Portsmouth and Swanwick and more than 80 years serving our customers, we offer mobile repair…” Source: RevenueBase Database · checked Sep 15, 2026
17	Harland & Wolff	Partial evidence	London, United KingdomHQ checked Sep 15, 2026	1,001-5,000	27 contacts →
	Partial evidence “Building on around 160 years of marine manufacturing experience, Harland & Wolff offers a unique combination of vast facilities and technical capability.” Source: RevenueBase Database · checked Sep 15, 2026
18	AST Reygar	Partial evidence	Stoke Gifford, United KingdomHQ checked Sep 15, 2026	1-10	27 contacts →
	Partial evidence “AST Reygar provides robust and reliable performance monitoring and control solutions for both crewed and uncrewed vessels, of all sizes and functions, in the complex marine…” Source: RevenueBase Database · checked Sep 15, 2026
19	Whippendell Marine LTD	Strong evidence	Milton Keynes, United KingdomHQ checked Sep 15, 2026	11-50	27 contacts →
	Strong 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 15, 2026
20	AQM Marine	Partial evidence	Plymouth, United KingdomHQ checked Sep 15, 2026	51-200	24 contacts →
	Partial evidence “AQM Marine specialises in delivering premium marine services tailored to meet the needs of boat owners, captains, and industry professionals.” Source: RevenueBase Database · checked Sep 15, 2026
21	Lumishore	Partial evidence	Swansea, United KingdomHQ checked Sep 15, 2026	51-200	23 contacts →
	Partial evidence “Engineered on the inside for life on the outside, Garmin products have revolutionized the aviation, automotive, marine and outdoor markets.” Source: RevenueBase Database · checked Sep 15, 2026
22	Sirm UK Marine LTD	Indirect evidence	Chelmsford, United KingdomHQ checked Sep 15, 2026	51-200	22 contacts →
	Indirect evidence “SIRM UK is the only organisation anywhere in the world that has been continuously involved in the supply and support of ships’ radio installations since the very inception of…” Source: RevenueBase Database · checked Sep 15, 2026
23	Chersoft LTD	Partial evidence	Sheffield, United KingdomHQ checked Sep 15, 2026	11-50	22 contacts →
	Partial evidence “CHERSOFT design high quality marine data management solutions.” Source: RevenueBase Database · checked Sep 15, 2026
24	Actisense	Partial evidence	Poole, United KingdomHQ checked Sep 15, 2026	11-50	21 contacts →
	Partial evidence “Actisense aim to be the installers product of choice by making navigation safer with the most reliable boat electronic systems.” Source: RevenueBase Database · checked Sep 15, 2026
25	CJR Propulsion	Partial evidence	Southampton, United KingdomHQ checked Sep 15, 2026	11-50	18 contacts →
	Partial evidence “As the marine industry has developed and the demand for highly efficient, performance products has continued to grow, CJR has emerged to become one of the UK’s most respected…” Source: RevenueBase Database · checked Sep 15, 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: marine electronics 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 marine electronics companies.
Partial evidence: Its own public description names part of marine electronics companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name marine electronics 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 276 marine electronics companies based in the United Kingdom

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Marine electronics companies based in the United Kingdom at a glance

As of Sep 15, 2026

35.2%Verified-email coverage

9.9Average contacts per company

1-10Median size (employees)

6.5%Largest-city concentration · Southampton

Sep 15, 2026Page data refreshed

Companies by employee count

1-10

168

11-50

51-200

201-500

501-1,000

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 276 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 marine electronics 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 “marine electronics 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 marine electronics 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 marine electronics 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, 964 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 15, 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 marine electronics 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 marine electronics companies are there based in the United Kingdom?

RevenueBase identified 276 marine electronics 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?

Raymarine, headquartered in Fareham, tops this list with the largest team on record.

Which city has the most marine electronics companies?

Southampton leads with 18 headquartered companies, followed by London (17) and Plymouth (10).

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 964 verified decision-maker contacts tracked across these 276 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 15, 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.