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, how directly it supports the match, 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 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 HQ checked on every row Match evidence 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. Evidence rates how directly each company's own description names marine software integration companies: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	SDSDStrong evidence	London, United KingdomHQ checked Sep 5, 2026	n/a	681
	“SDSD - Supporting Maritime Professionals since 1983 Software innovation to the Maritime industry for more than 30 years.” Source: company website · checked Sep 5, 2026
2	TBAPartial evidence	Leicester, United KingdomHQ checked Sep 5, 2026	201-500	637
	“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: company website · checked Sep 5, 2026
3	James Fisher And Sons PLCIndirect evidence	Barrow-in-furness, United KingdomHQ checked Sep 5, 2026	1,001-5,000	403
	“Above, below and beyond the world’s oceans.” Source: company website · checked Sep 5, 2026
4	Briggs MarinePartial evidence	Burntisland, United KingdomHQ checked Sep 5, 2026	501-1,000	387
	“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: company website · checked Sep 5, 2026
5	OneoceanPartial evidence	London, United KingdomHQ checked Sep 5, 2026	201-500	295
	“Welcome to OneOcean: the ocean’s digital ecosystem and trusted partner for maritime businesses worldwide.” Source: company website · checked Sep 5, 2026
6	Sperry MarinePartial evidence	New Malden, United KingdomHQ checked Sep 5, 2026	201-500	279
	“Sperry Marine provides the commercial and defence maritime industry with Navigation Solutions that excel in efficiency, reliability and safety.” Source: company website · checked Sep 5, 2026
7	Apcl A&p Group LimitedPartial evidence	Hebburn, United KingdomHQ checked Sep 5, 2026	501-1,000	240
	“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: company website · checked Sep 5, 2026
8	MJM MarinePartial evidence	Newry, United KingdomHQ checked Sep 5, 2026	201-500	236
	“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: company website · checked Sep 5, 2026
9	Mactaggart ScottPartial evidence	Loanhead, United KingdomHQ checked Sep 5, 2026	201-500	210
	“A Scottish engineering company founded in 1898, MacTaggart Scott supports the Naval Defence and Marine market.” Source: company website · checked Sep 5, 2026
10	Pole Star GlobalPartial evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	183
	“Pole Star Global is a maritime intelligence and technology solutions company, focusing on reducing risk and optimising trade efficiency.” Source: company website · checked Sep 5, 2026
11	Ninety Percent Of Everything 90poePartial evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	161
	“Creating clarity, control and confidence for modern maritime operations with OpenOcean STUDIO.” Source: company website · checked Sep 5, 2026
12	MDL Marinas LTDPartial evidence	Southampton, United KingdomHQ checked Sep 5, 2026	201-500	157
	“The MDL team includes experienced and professionally qualified specialists in all facets of marina development and marina operations.” Source: company website · checked Sep 5, 2026
13	Ferguson Marine Port Glasgow LimitedPartial evidence	Port Glasgow, United KingdomHQ checked Sep 5, 2026	201-500	156
	“Ferguson Marine (Port Glasgow) Limited is Scotland's leading company in new build, refit and ship repair.” Source: company website · checked Sep 5, 2026
14	SEAStrong evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	146
	“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: company website · checked Sep 5, 2026
15	SRT Marine Systems PLCPartial evidence	Midsomer Norton, United KingdomHQ checked Sep 5, 2026	51-200	129
	“SRT Marine Systems PLC is a global leader and innovator in maritime surveillance, intelligence, navigation safety and situational awareness.” Source: company website · checked Sep 5, 2026
16	SpectecStrong evidence	Manchester, United KingdomHQ checked Sep 5, 2026	51-200	113
	“SpecTec is a market-leading maritime technology company specialising in asset management software.” Source: company website · checked Sep 5, 2026
17	James Fisher OffshorePartial evidence	Oldmeldrum, United KingdomHQ checked Sep 5, 2026	51-200	107
	“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: company website · checked Sep 5, 2026
18	ModutecPartial evidence	Aberdeen, United KingdomHQ checked Sep 5, 2026	51-200	103
	“Repair, Conversion and New Build of Marine and Offshore Living Quarters and Technical Buildings.” Source: company website · checked Sep 5, 2026
19	Star InternationalIndirect evidence	Birkenhead, United KingdomHQ checked Sep 5, 2026	51-200	103
	“Star International specialises in keeping vessels safe and compliant.” Source: company website · checked Sep 5, 2026
20	CathelcoIndirect evidence	Chesterfield, United KingdomHQ checked Sep 5, 2026	51-200	91
	“Cathelco safeguards your fleet by managing biofouling, ensuring corrosion protection, and generating freshwater Our offering: Ultrasonic Antifouling - Cathelco's DragGone™…” Source: company website · checked Sep 5, 2026
21	SMS Group Ship Repair Marine Interiors Marine Engineering SC SqepPartial evidence	Southampton, United KingdomHQ checked Sep 5, 2026	51-200	89
	“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: company website · checked Sep 5, 2026
22	Shearwater Marine ServicesPartial evidence	Sandbank, United KingdomHQ checked Sep 5, 2026	51-200	87
	“Founded in 1992, Shearwater Marine Services have since grown to become a highly respected topside and sub-surface marine engineering service provider.” Source: company website · checked Sep 5, 2026
23	Waves Group LTDPartial evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	84
	“Waves Group combines the expertise of Cwaves and Mwaves as leading, independent marine consultants to the shipping and offshore energy industries.” Source: company website · checked Sep 5, 2026
24	SeebyteStrong evidence	Edinburgh, United KingdomHQ checked Sep 5, 2026	51-200	81
	“SeeByte provides clients in the global maritime industry with the most advanced software solutions to enhance the capabilities of their uncrewed systems.” Source: company website · checked Sep 5, 2026
25	Ulysses SystemsStrong evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	78
	“Ulysses Systems is a leading marine industry provider of enterprise software.” Source: company website · checked Sep 5, 2026

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

1-10Median size (employees)

LondonLargest hub · 87 HQs

747Contacts with mobile numbers

Sep 5, 2026Data refreshed

Companies by employee count

1-10

428

11-50

190

51-200

201-500

501-1,000

1,001-5,000

Verified emails by last verification

0–30

3,381

31–60

210

61–90

90–180

180+

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 evidence 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 SmartSearch, 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.
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 an evidence 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

Marine software integration companies in London87
Marine software integration companies in Southampton33

Frequently asked

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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Marine software integration companies by geography

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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.