Company lists · Data refreshed November 2026

Top 21 Maritime software developers based in the United Kingdom

Name: Maritime software developers based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 5, 2026 217 companies tracked

RevenueBase identified 217 company matches for maritime software developers associated with the United Kingdom as of November 2026 and tracks 14,265 professional contacts across them, including 2,771 with verified work emails. London is the largest hub.

This list covers company matches for maritime software developers 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 November 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 RevenueBase SmartSearch · Exact Recorded Nov 5, 2026 How this list was built

217Companies

14,265Contacts tracked

2,771Verified emails

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The 21 largest maritime software developers based in the United Kingdom

Ranked by team size

Top 21 of 217 company matches for maritime software developers based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 5, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Clarksons	Exact match	St. Katharine Docks, United KingdomHQ recorded Nov 5, 2026	1,001-5,000	1,440 contacts →
	Exact match “Clarksons is at the heart of maritime global shipping.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
2	TBA	Exact match	Leicester, United KingdomHQ recorded Nov 5, 2026	201-500	678 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
3	Oneocean	Exact match	London, United KingdomHQ recorded Nov 5, 2026	201-500	357 contacts →
	Exact match “Welcome to OneOcean: the ocean’s digital ecosystem and trusted partner for maritime businesses worldwide.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
4	SEA	Exact match	London, United KingdomHQ recorded Nov 5, 2026	51-200	159 contacts →
	Exact match “As the leading independent provider of commercial software for global maritime trade, we’re unleashing the power of data to help drive sustainable shipping.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
5	Spot Ship	Exact match	London, United KingdomHQ recorded Nov 5, 2026	n/a	159 contacts →
	Exact match “We are a shipbroking technology company.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
6	Ulysses Systems	Exact match	London, United KingdomHQ recorded Nov 5, 2026	51-200	82 contacts →
	Exact match “Ulysses Systems is a leading marine industry provider of enterprise software.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
7	GME Services Global Maritime Engineering Services	Exact match	Bridgend, United KingdomHQ recorded Nov 5, 2026	501-1,000	55 contacts →
	Exact match “GME Services Limited provides complete engineering management & support for the maritime industry; working Globally, 24 hours a day, 365 days a year.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
8	Road Tech Computer Systems	Exact match	Shenley, United KingdomHQ recorded Nov 5, 2026	51-200	52 contacts →
	Exact match “Welcome to Road Tech, we deliver the most advanced software solutions for the transport industry.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
9	Forward Solutions	Exact match	Nottingham, United KingdomHQ recorded Nov 5, 2026	11-50	36 contacts →
	Exact match “Forward Solutions is the UK's leading independent national supplier of software and e-commerce solutions to the freight and logistics industry.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
10	Gtmaritime	Exact match	Warrington, United KingdomHQ recorded Nov 5, 2026	11-50	36 contacts →
	Exact match “Since 1998, we have been providing a range of technology solutions and services for Maritime IT teams helping them manage communications, security, and fleet operations from shore…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
11	MARLO	Exact match	London, United KingdomHQ recorded Nov 5, 2026	11-50	36 contacts →
	Exact match “Marlo is a maritime ERP platform built exclusively for the shipping industry-helping vessel owners, operators, and commercial managers run their entire business from one system.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
12	Rescompany Systems Limited	Exact match	Sheffield, United KingdomHQ recorded Nov 5, 2026	51-200	32 contacts →
	Exact match “Established in 2003, Rescompany Systems Ltd.(Resco) is an international software company supplying reservation (CRS), customer relationship management (CRM), property management…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
13	Orwell Offshore	Exact match	Ipswich, United KingdomHQ recorded Nov 5, 2026	51-200	30 contacts →
	Exact match “Orwell Offshore, established in 2006, is a UK headquartered Naval Architecture and Offshore Engineering company with offices in Ipswich, London, Singapore, Nigeria, and Indonesia.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
14	RB British Marine	Exact match	London, United KingdomHQ recorded Nov 5, 2026	11-50	30 contacts →
	Exact match “RB British Marine is a vessel operating and management group based in London, Singapore and Mumbai.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
15	Sirm UK Marine LTD	Exact match	Chelmsford, United KingdomHQ recorded Nov 5, 2026	51-200	28 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
16	AST Reygar	Exact match	Stoke Gifford, United KingdomHQ recorded Nov 5, 2026	1-10	28 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
17	Marino Tech Services	Exact match	London, United KingdomHQ recorded Nov 5, 2026	11-50	25 contacts →
	Exact match “Marino Tech Services have been an active provider in the maritime software space over the past 25 years with the rich legacy of delivering innovative ship management solutions.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
18	Chersoft LTD	Exact match	Sheffield, United KingdomHQ recorded Nov 5, 2026	11-50	22 contacts →
	Exact match “CHERSOFT design high quality marine data management solutions.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
19	Clearwater Dynamics	Exact match	Poole, United KingdomHQ recorded Nov 5, 2026	11-50	21 contacts →
	Exact match “Clearwater Dynamics delivers industry‑leading technology solutions specialising in IoT connectivity, vessel tracking, and risk‑mitigation.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
20	Educy Maritime & Shipping	Exact match	London, United KingdomHQ recorded Nov 5, 2026	51-200	20 contacts →
	Exact match “Educy Maritime & Shipping is a UK-based ship management and maritime services company working with owners and operators of dry cargo vessels trading internationally.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
21	Proact International LTD	Exact match	Parc, United KingdomHQ recorded Nov 5, 2026	51-200	19 contacts →
	Exact match “We’re the supply chain software solutions specialists.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “maritime software developers”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 21 of 217 maritime software developers based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 2,771 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Maritime software developers based in the United Kingdom at a glance

As of Nov 5, 2026

19.4%Verified-email coverage

65.7Average contacts per company

1-10Median size (employees)

25.3%Largest-city concentration · London

Nov 5, 2026Page data refreshed

Companies by employee count

1-10

118

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

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 217 companies.

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 “maritime software developers” 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 2,771 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 November 5, 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.

Maritime software developers by metro

Maritime software developers in London55

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 “maritime software developers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many maritime software developers are there based in the United Kingdom?

RevenueBase identified 217 company matches for maritime software developers associated with the United Kingdom as of November 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?

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

Which city has the most maritime software developers?

London leads with 55 company records, followed by Glasgow (7) and Aberdeen (4).

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 2,771 professional contacts with verified work emails tracked across these 217 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 November 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 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.