Company lists · Data refreshed September 2026

Top 25 Marine design consultancies based in London, United Kingdom

Name: Marine design consultancies based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 137 companies tracked

RevenueBase identified 137 marine design consultancies headquartered in London, United Kingdom as of September 2026 and tracks 4,726 professional contacts across them, including 1,057 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers marine design consultancies headquartered in London, 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 28, 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 28, 2026 86% judged on-target in blind review

137Companies

4,726Contacts tracked

1,057Verified emails

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The 25 largest marine design consultancies based in London, United Kingdom

Ranked by team size

Top 25 of 137 marine design consultancies based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to marine design consultancies: 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	ABL	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	1,001-5,000	804 contacts →
	Partial evidence “The Energy and Marine Consultants - an Aqualis company.” Source: RevenueBase Database · checked Sep 28, 2026
2	SDSD	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	n/a	681 contacts →
	Partial evidence “SDSD - Supporting Maritime Professionals since 1983 Software innovation to the Maritime industry for more than 30 years.” Source: RevenueBase Database · checked Sep 28, 2026
3	LOC	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	206 contacts →
	Indirect evidence “ONE PARTNER.” Source: RevenueBase Database · checked Sep 28, 2026
4	Longitude Engineering	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	138 contacts →
	Indirect evidence “The Engineering Consultants.” Source: RevenueBase Database · checked Sep 28, 2026
5	Drewry Shipping Consultants LTD	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	128 contacts →
	Partial evidence “Drewry is a leading international provider of research and consulting services to the maritime and shipping industry.” Source: RevenueBase Database · checked Sep 28, 2026
6	Houlder Limited	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	91 contacts →
	Indirect evidence “Sea.” Source: RevenueBase Database · checked Sep 28, 2026
7	Royal Institution Of Naval Architects	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	82 contacts →
	Partial evidence “Royal Institution of Naval Architects (RINA) is a global membership body for the maritime industry, covering everything from super yachts and green propulsion to warship…” Source: RevenueBase Database · checked Sep 28, 2026
8	Bpp-Tech Cables Renewables	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	35 contacts →
	Partial evidence “BPP-Tech \| Cables \| Renewables provides engineering services to the energy, maritime and defence sectors.” Source: RevenueBase Database · checked Sep 28, 2026
9	Richards Hogg Lindley RHL	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	32 contacts →
	Partial evidence “A leading provider of independent marine claims advice and adjusting services, handling complex hull and machinery cases, shipyard losses, loss of hire claims and the largest…” Source: RevenueBase Database · checked Sep 28, 2026
10	Waypoint Global	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	32 contacts →
	Indirect evidence “Waypoint Global operates across Europe, the Americas, the Middle East and Asia providing consultancy services and staffing project solutions to niche vertical markets and in…” Source: RevenueBase Database · checked Sep 28, 2026
11	Braemar Technical Services Marine	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	30 contacts →
	Partial evidence “AqualisBraemar’s Technical Division provides independent technical expertise and analysis to the marine, energy and insurance sectors on a global basis.” Source: RevenueBase Database · checked Sep 28, 2026
12	Solis Marine	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	29 contacts →
	Partial evidence “Solis Marine was established in 2012 to provide independent expert technical services to the shipping and wider maritime industries.” Source: RevenueBase Database · checked Sep 28, 2026
13	Maritime Strategies International	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	28 contacts →
	Partial evidence “From market analysis to investment decision support, Maritime Strategies International (MSI) offers high level, independent market forecasting and business advisory services for…” Source: RevenueBase Database · checked Sep 28, 2026
14	London Marine Consultants LMC	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	27 contacts →
	Strong evidence “London Marine Consultants (LMC) specialises in the engineering design and provision of mooring and subsea systems for FPSOs, FSRUs, FLNGs and FSOs, Floating Wind, Tidal and Wave…” Source: RevenueBase Database · checked Sep 28, 2026
15	Harland & Wolff	Partial evidence	London, United KingdomHQ checked Sep 28, 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 28, 2026
16	Society Of Maritime Industries SMI	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	25 contacts →
	Strong evidence “The Society of Maritime Industries (SMI) is the voice of the UK’s maritime engineering and business sector promoting and supporting companies which design, build, refit and…” Source: RevenueBase Database · checked Sep 28, 2026
17	TMC Marine	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	22 contacts →
	Partial evidence “TMC, a Bureau Veritas Group Company and leading international marine consultancy, has been providing advice and support to the marine and offshore energy industries since 1979.” Source: RevenueBase Database · checked Sep 28, 2026
18	Independent Maritime Advisors LTD	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	14 contacts →
	Strong evidence “Independent Firm for Maritime Consultancies, IMA Ltd.” Source: RevenueBase Database · checked Sep 28, 2026
19	PAC Ocean Solutions Limited	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	13 contacts →
	Partial evidence “Leading Marine Services Provider, Specializing In Ship Repairs, Maintenance, and Innovative Maritime Solutions.” Source: RevenueBase Database · checked Sep 28, 2026
20	Proteus Professionals	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	10 contacts →
	Partial evidence “Proteus Professionals is comprised of incredibly talented and qualified individuals who are passionate about the marine industry, and who’ve devoted their lives to sailing and…” Source: RevenueBase Database · checked Sep 28, 2026
21	Ocean Marine	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	10 contacts →
	Partial evidence “Ocean Marine \| Established 2012 Based in OBHUR, Jeddah, Ocean Marine is a leading supplier of marine spares, equipment, and safety products in the Kingdom of Saudi Arabia.” Source: RevenueBase Database · checked Sep 28, 2026
22	Mayfair Marine	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	9 contacts →
	Partial evidence “Mayfair Marine is the new independent technical consultancy for superyachts.” Source: RevenueBase Database · checked Sep 28, 2026
23	Hanscomb Intercontinental	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	9 contacts →
	Indirect evidence “Hanscomb Intercontinental are a global provider of expert witness and expert advisory services to the onshore and offshore construction, engineering and shipbuilding industries.” Source: RevenueBase Database · checked Sep 28, 2026
24	A2 Maritime	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	8 contacts →
	Indirect evidence “We will not over-promise or under-deliver.” Source: RevenueBase Database · checked Sep 28, 2026
25	CSO Shipbrokers	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	8 contacts →
	Partial evidence “Part of the CSO Marine Group, CSO Shipbrokers is a ship brokerage and marine consultancy, focused on providing solutions to the Offshore Renewables, Transport & Installation and…” Source: RevenueBase Database · checked Sep 28, 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 design consultancies. 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 design consultancies.
Partial evidence: Its own public description names part of marine design consultancies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name marine design consultancies. 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 137 marine design consultancies based in London, United Kingdom

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Marine design consultancies based in London, United Kingdom at a glance

As of Sep 28, 2026

22.4%Verified-email coverage

34.5Average contacts per company

1-10Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured across the whole United Kingdom list rather than for London, so it is reported there. Company counts and contact totals on this page are exact for London, over 137 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 design consultancies, 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 London, United Kingdom whose own description of what they do matches “marine design consultancies”. 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 design consultancies), 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 design consultancies, and records with no verified work email. Companies headquartered outside London 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, 1,057 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 28, 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 design consultancies by metro in the United Kingdom

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 design consultancies, 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 design consultancies are there based in London, United Kingdom?

RevenueBase identified 137 marine design consultancies headquartered in London, 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?

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

Which city in the United Kingdom has the most marine design consultancies?

London leads the United Kingdom with 137 headquartered companies, followed by Southampton (70) and Aberdeen (42).

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 1,057 verified decision-maker contacts tracked across these 137 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 28, 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.