Company lists · Data refreshed September 2026

Top 25 Marine software integration companies based in the United Kingdom

Name: Marine software integration 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 5, 2026 730 companies tracked

RevenueBase identified 730 marine software integration companies headquartered in the United Kingdom as of September 2026 and tracks 13,369 professional contacts across them, including 3,604 with verified work emails and 747 with mobile numbers. London is the largest hub.

This list covers marine software integration 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 5, 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 5, 2026 86% judged on-target in blind review

730Companies

13,369Contacts tracked

3,604Verified emails

747Mobile numbers

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The 25 largest marine software integration companies based in the United Kingdom

Ranked by team size

Top 25 of 730 marine software integration companies based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 5, 2026. RevenueBase Smart Search rates how each company's information relates to marine software integration 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	SDSD	Strong evidence	London, United KingdomHQ checked Sep 5, 2026	n/a	681 contacts →
	Strong evidence “SDSD - Supporting Maritime Professionals since 1983 Software innovation to the Maritime industry for more than 30 years.” Source: RevenueBase Database · checked Sep 5, 2026
2	TBA	Partial evidence	Leicester, United KingdomHQ checked Sep 5, 2026	201-500	637 contacts →
	Partial evidence “We are a global software & services business offering integrated solutions to simplify the operations for the entire lifecycle of ports, terminals and warehouses, enabling every…” Source: RevenueBase Database · checked Sep 5, 2026
3	James Fisher And Sons PLC	Indirect evidence	Barrow-in-furness, United KingdomHQ checked Sep 5, 2026	1,001-5,000	403 contacts →
	Indirect evidence “Above, below and beyond the world’s oceans.” Source: RevenueBase Database · checked Sep 5, 2026
4	Briggs Marine	Partial evidence	Burntisland, United KingdomHQ checked Sep 5, 2026	501-1,000	387 contacts →
	Partial evidence “Briggs Marine is a leading provider of marine and environmental services, specialising in port and marine operations, subsea and environmental support and vessel charter.” Source: RevenueBase Database · checked Sep 5, 2026
5	Oneocean	Partial evidence	London, United KingdomHQ checked Sep 5, 2026	201-500	295 contacts →
	Partial evidence “Welcome to OneOcean: the ocean’s digital ecosystem and trusted partner for maritime businesses worldwide.” Source: RevenueBase Database · checked Sep 5, 2026
6	Sperry Marine	Partial evidence	New Malden, United KingdomHQ checked Sep 5, 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 5, 2026
7	Apcl A&p Group Limited	Partial evidence	Hebburn, United KingdomHQ checked Sep 5, 2026	501-1,000	240 contacts →
	Partial evidence “A&P, part of the APCL Group, is a global marine engineering business which operates six dry docks across two strategic locations in the UK and delivers engineering excellence to…” Source: RevenueBase Database · checked Sep 5, 2026
8	MJM Marine	Partial evidence	Newry, United KingdomHQ checked Sep 5, 2026	201-500	236 contacts →
	Partial evidence “Crafting Exceptional Spaces Since 1983 At MJM Marine, our motivation is simple: to create spaces that transcend functionality and provide unparalleled experiences for people to…” Source: RevenueBase Database · checked Sep 5, 2026
9	Mactaggart Scott	Partial evidence	Loanhead, United KingdomHQ checked Sep 5, 2026	201-500	210 contacts →
	Partial evidence “A Scottish engineering company founded in 1898, MacTaggart Scott supports the Naval Defence and Marine market.” Source: RevenueBase Database · checked Sep 5, 2026
10	Pole Star Global	Partial evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	183 contacts →
	Partial evidence “Pole Star Global is a maritime intelligence and technology solutions company, focusing on reducing risk and optimising trade efficiency.” Source: RevenueBase Database · checked Sep 5, 2026
11	Ninety Percent Of Everything 90poe	Partial evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	161 contacts →
	Partial evidence “Creating clarity, control and confidence for modern maritime operations with OpenOcean STUDIO.” Source: RevenueBase Database · checked Sep 5, 2026
12	MDL Marinas LTD	Partial evidence	Southampton, United KingdomHQ checked Sep 5, 2026	201-500	157 contacts →
	Partial evidence “The MDL team includes experienced and professionally qualified specialists in all facets of marina development and marina operations.” Source: RevenueBase Database · checked Sep 5, 2026
13	Ferguson Marine Port Glasgow Limited	Partial evidence	Port Glasgow, United KingdomHQ checked Sep 5, 2026	201-500	156 contacts →
	Partial evidence “Ferguson Marine (Port Glasgow) Limited is Scotland's leading company in new build, refit and ship repair.” Source: RevenueBase Database · checked Sep 5, 2026
14	SEA	Strong evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	146 contacts →
	Strong evidence “As the leading independent provider of commercial software for global maritime trade, we’re unleashing the power of data to help drive sustainable shipping.” Source: RevenueBase Database · checked Sep 5, 2026
15	SRT Marine Systems PLC	Partial evidence	Midsomer Norton, United KingdomHQ checked Sep 5, 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 5, 2026
16	Spectec	Strong evidence	Manchester, United KingdomHQ checked Sep 5, 2026	51-200	113 contacts →
	Strong evidence “SpecTec is a market-leading maritime technology company specialising in asset management software.” Source: RevenueBase Database · checked Sep 5, 2026
17	James Fisher Offshore	Partial evidence	Oldmeldrum, United KingdomHQ checked Sep 5, 2026	51-200	107 contacts →
	Partial evidence “James Fisher Offshore (JFO) is an international supplier of marine back deck, specialist subsea equipment and engineering services supporting the global subsea contractors across…” Source: RevenueBase Database · checked Sep 5, 2026
18	Modutec	Partial evidence	Aberdeen, United KingdomHQ checked Sep 5, 2026	51-200	103 contacts →
	Partial evidence “Repair, Conversion and New Build of Marine and Offshore Living Quarters and Technical Buildings.” Source: RevenueBase Database · checked Sep 5, 2026
19	Star International	Indirect evidence	Birkenhead, United KingdomHQ checked Sep 5, 2026	51-200	103 contacts →
	Indirect evidence “Star International specialises in keeping vessels safe and compliant.” Source: RevenueBase Database · checked Sep 5, 2026
20	Cathelco	Indirect evidence	Chesterfield, United KingdomHQ checked Sep 5, 2026	51-200	91 contacts →
	Indirect evidence “Cathelco safeguards your fleet by managing biofouling, ensuring corrosion protection, and generating freshwater Our offering: Ultrasonic Antifouling - Cathelco's DragGone™…” Source: RevenueBase Database · checked Sep 5, 2026
21	SMS Group Ship Repair Marine Interiors Marine Engineering SC Sqep	Partial evidence	Southampton, United KingdomHQ checked Sep 5, 2026	51-200	89 contacts →
	Partial evidence “Southampton Marine Services Ltd was established in 2004 and specialises in ship / work boat building, vessel repair and marine engineering; we trade in four markets - Commercial…” Source: RevenueBase Database · checked Sep 5, 2026
22	Shearwater Marine Services	Partial evidence	Sandbank, United KingdomHQ checked Sep 5, 2026	51-200	87 contacts →
	Partial evidence “Founded in 1992, Shearwater Marine Services have since grown to become a highly respected topside and sub-surface marine engineering service provider.” Source: RevenueBase Database · checked Sep 5, 2026
23	Waves Group LTD	Partial evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	84 contacts →
	Partial evidence “Waves Group combines the expertise of Cwaves and Mwaves as leading, independent marine consultants to the shipping and offshore energy industries.” Source: RevenueBase Database · checked Sep 5, 2026
24	Seebyte	Strong evidence	Edinburgh, United KingdomHQ checked Sep 5, 2026	51-200	81 contacts →
	Strong evidence “SeeByte provides clients in the global maritime industry with the most advanced software solutions to enhance the capabilities of their uncrewed systems.” Source: RevenueBase Database · checked Sep 5, 2026
25	Ulysses Systems	Strong evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	78 contacts →
	Strong evidence “Ulysses Systems is a leading marine industry provider of enterprise software.” Source: RevenueBase Database · checked Sep 5, 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 software integration 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 software integration companies.
Partial evidence: Its own public description names part of marine software integration companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name marine software integration 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 730 marine software integration companies based in the United Kingdom

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Marine software integration companies based in the United Kingdom at a glance

As of Sep 5, 2026

27.0%Verified-email coverage

5.6%Mobile-number coverage

18.3Average contacts per company

1-10Median size (employees)

11.9%Largest-city concentration · London

Sep 5, 2026Page data refreshed

Companies by employee count

1-10

428

11-50

190

51-200

201-500

501-1,000

1,001-5,000

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

3,3810–30

21031–60

261–90

090–180

11180+

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 software integration 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 software integration 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 software integration 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 software integration 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, 3,604 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 5, 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.

Marine software integration companies by metro

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 software integration 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 software integration companies are there based in the United Kingdom?

RevenueBase identified 730 marine software integration 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?

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

Which city has the most marine software integration companies?

London leads with 87 headquartered companies, followed by Southampton (33) and Aberdeen (22).

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 3,604 verified decision-maker contacts tracked across these 730 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 5, 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.