Company lists · Data refreshed November 2026

Top 25 Underwater construction services based in the United Kingdom

Name: Underwater construction services based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 3, 2026 151 companies tracked

RevenueBase identified 151 company matches for underwater construction services associated with the United Kingdom as of November 2026 and tracks 2,185 professional contacts across them, including 576 with verified work emails. London is the largest hub.

This list covers company matches for underwater construction services 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 3, 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 3, 2026 How this list was built

151Companies

2,185Contacts tracked

576Verified emails

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The 25 largest underwater construction services based in the United Kingdom

Ranked by team size

Top 25 of 151 company matches for underwater construction services based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 3, 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	Global Marine	Exact match	Chelmsford, United KingdomHQ recorded Nov 3, 2026	501-1,000	371 contacts →
	Exact match “Global Marine is part of the Global Marine Group, and is a market leader in subsea cable installation and maintenance solutions to the telecoms and oil & gas sectors.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
2	Volkerlaser	Exact match	Worcester, United KingdomHQ recorded Nov 3, 2026	51-200	254 contacts →
	Exact match “VolkerLaser is the UK's leading multi-functional contractor.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
3	Shearwater Marine Services	Exact match	Sandbank, United KingdomHQ recorded Nov 3, 2026	51-200	93 contacts →
	Exact match “Founded in 1992, Shearwater Marine Services have since grown to become a highly respected topside and sub-surface marine engineering service provider.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
4	Foundocean	Exact match	Livingston, United KingdomHQ recorded Nov 3, 2026	51-200	90 contacts →
	Exact match “FoundOcean boasts 60 years’ experience of providing green and brown field services to the marine construction industries.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
5	TMS LTD	Exact match	Devon, United KingdomHQ recorded Nov 3, 2026	51-200	72 contacts →
	Exact match “TMS Ltd have in excess of 31 years of expertise as a marine contractor within the Civil Engineering sector.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
6	Land And Marine Engineering Limited	Exact match	Bromborough, United KingdomHQ recorded Nov 3, 2026	201-500	58 contacts →
	Exact match “Land and Marine Engineering Limited, a part of the Murphy Group of companies is an international engineering and construction company.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
7	Edwards Diving Services LTD	Exact match	Pontypridd, United KingdomHQ recorded Nov 3, 2026	51-200	56 contacts →
	Exact match “EDWARDS DIVING SERVICES LIMITED (EDS) is a specialist Marine & Civil Engineering company located in South Wales, United Kingdom.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
8	GPS Marine Contractors LTD	Exact match	Rochester, United KingdomHQ recorded Nov 3, 2026	51-200	49 contacts →
	Exact match “Marine Contractors specialising in: Marine Civil Engineering and Construction.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
9	Beckett Rankine	Exact match	Westminster, United KingdomHQ recorded Nov 3, 2026	11-50	48 contacts →
	Exact match “Beckett Rankine is the UK's leading maritime engineering consultancy.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
10	Southbay Civil Engineering LTD	Exact match	Gateshead, United KingdomHQ recorded Nov 3, 2026	51-200	48 contacts →
	Exact match “Over the last 20 years Southbay has developed a reputation as one of the UK’s leading maritime civil engineering contractors, undertaking technically challenging projects within…” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
11	KD Marine LTD	Exact match	Aberdeen, United KingdomHQ recorded Nov 3, 2026	11-50	47 contacts →
	Exact match “KD Marine are a commercial diving contractor providing underwater intervention services to the offshore oil and gas industry.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
12	Keynvor Morlift LTD	Exact match	Falmouth, United KingdomHQ recorded Nov 3, 2026	51-200	45 contacts →
	Exact match “Keynvor Morlift Ltd is a UK-based marine contracting and consulting firm.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
13	Leask Marine LTD	Exact match	Kirkwall, United KingdomHQ recorded Nov 3, 2026	11-50	38 contacts →
	Exact match “Leask Marine provide an unprecedented range of uniquely developed processes and equipment to support the mobilisation, deployment, installation, commissioning, service and…” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
14	Diveco Marine LTD	Exact match	Northfleet, United KingdomHQ recorded Nov 3, 2026	11-50	37 contacts →
	Exact match “A dynamic, award winning and multi-disciplined specialist contractor, providing civil engineering solutions for marine orientated projects, private and public sector projects.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
15	Rocksalt Subsea LTD	Exact match	Insch, United KingdomHQ recorded Nov 3, 2026	11-50	21 contacts →
	Exact match “RockSalt Subsea Ltd are Commercial Diving & Remotely Operated Vehicle (ROV) specialists, delivering engineering support and Technical Authority services to the offshore energy and…” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
16	Dsmc.Uk Diving, Survey And Marine Contracting	Exact match	Linton, United KingdomHQ recorded Nov 3, 2026	11-50	21 contacts →
	Exact match “Diving, Survey and Marine Contracting (DSMC).” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
17	Northern Divers ENG LTD	Exact match	Hull, United KingdomHQ recorded Nov 3, 2026	11-50	20 contacts →
	Exact match “Established in 1963, Northern Divers are the oldest established commercial divers in the UK.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
18	Underwater Diving Services LTD	Exact match	Barrow-in-furness, United KingdomHQ recorded Nov 3, 2026	11-50	18 contacts →
	Exact match “Diving & Marine civil engineering contractor” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
19	Herbosch-Kiere Marine Contractors LTD	Exact match	Chiswick, United KingdomHQ recorded Nov 3, 2026	11-50	18 contacts →
	Exact match “Herbosch Kiere Marine Contractors Ltd is the UK subsidiary of Herbosch-Kiere NV, a leading European marine engineering company.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
20	Constructex	Exact match	Fareham, United KingdomHQ recorded Nov 3, 2026	11-50	17 contacts →
	Exact match “Constructex is a specialist maritime contractor.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
21	Falmouth Divers LTD	Exact match	Penryn, United KingdomHQ recorded Nov 3, 2026	11-50	17 contacts →
	Exact match “Since forming in 1978 Falmouth Divers has become one of Europe's leading multi-discipline diving, subsea and marine civil engineering contractors.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
22	Dagger Diving Services LTD	Exact match	Ripon, United KingdomHQ recorded Nov 3, 2026	1-10	15 contacts →
	Exact match “With many years of experience in civil engineering, salvaging, ship maintenance, and more, we have a diverse range of skills and excellent experience.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
23	Commercial & Specialised Diving LTD	Exact match	Ferndown, United KingdomHQ recorded Nov 3, 2026	11-50	15 contacts →
	Exact match “Over the past decade the company has provided a wide range of services across the professional diving arena and has always provided a quality, professional, friendly service at a…” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
24	RS Divers LTD	Exact match	Portsmouth, United KingdomHQ recorded Nov 3, 2026	1-10	15 contacts →
	Exact match “Established in 2005, RS Divers provide inshore commercial diving services, specialising in marine civil engineering and marine inspection and maintenance.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
25	J.T.Mackley & Co.Limited	Exact match	Small Dole, United KingdomHQ recorded Nov 3, 2026	51-200	13 contacts →
	Exact match “See @Mackley for more details.” Recorded in the RevenueBase company graph · Nov 3, 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 “underwater construction services”. 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 25 of 151 underwater construction services based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 576 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Underwater construction services based in the United Kingdom at a glance

As of Nov 3, 2026

26.4%Verified-email coverage

14.5Average contacts per company

11-50Median size (employees)

6.6%Largest-city concentration · London

Nov 3, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

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 151 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 “underwater construction services” 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 576 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 3, 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.

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 “underwater construction services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many underwater construction services are there based in the United Kingdom?

RevenueBase identified 151 company matches for underwater construction services 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?

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

Which city has the most underwater construction services?

London leads with 10 company records, followed by Aberdeen (6) and Poole (3).

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 576 professional contacts with verified work emails tracked across these 151 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 3, 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.