Company lists · Data refreshed September 2026

Top 25 Marine waterproofing contractors based in the United Kingdom

Name: Marine waterproofing contractors based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 360 companies tracked

RevenueBase identified 360 marine waterproofing contractors headquartered in the United Kingdom as of September 2026 and tracks 3,225 professional contacts across them, including 1,043 with verified work emails. London is the largest hub.

This list covers marine waterproofing contractors 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 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

360Companies

3,225Contacts tracked

1,043Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest marine waterproofing contractors based in the United Kingdom

Ranked by team size

Top 25 of 360 marine waterproofing contractors based in the 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 waterproofing contractors: 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	Modutec	Partial evidence	Aberdeen, United KingdomHQ checked Sep 28, 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 28, 2026
2	Cathelco	Indirect evidence	Chesterfield, United KingdomHQ checked Sep 28, 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 28, 2026
3	SMS Group Ship Repair Marine Interiors Marine Engineering SC Sqep	Partial evidence	Southampton, United KingdomHQ checked Sep 28, 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 28, 2026
4	Shearwater Marine Services	Partial evidence	Sandbank, United KingdomHQ checked Sep 28, 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 28, 2026
5	Foundocean	Partial evidence	Livingston, United KingdomHQ checked Sep 28, 2026	51-200	85 contacts →
	Partial evidence “FoundOcean boasts 60 years’ experience of providing green and brown field services to the marine construction industries.” Source: RevenueBase Database · checked Sep 28, 2026
6	UK Docks Marine Services	Indirect evidence	Tyne & Wear, United KingdomHQ checked Sep 28, 2026	201-500	72 contacts →
	Indirect evidence “UK Docks offers dry docks, afloat repair berths and specialist boat repair facilities throughout the UK and employs specialist service engineers for vessel repair, construction…” Source: RevenueBase Database · checked Sep 28, 2026
7	TMS LTD	Strong evidence	Devon, United KingdomHQ checked Sep 28, 2026	51-200	65 contacts →
	Strong evidence “TMS Ltd have in excess of 31 years of expertise as a marine contractor within the Civil Engineering sector.” Source: RevenueBase Database · checked Sep 28, 2026
8	Atlantic Pacific Marine LTD	Partial evidence	Cardiff, United KingdomHQ checked Sep 28, 2026	11-50	63 contacts →
	Partial evidence “Atlantic Pacific Marine is your dedicated marine service specialist.” Source: RevenueBase Database · checked Sep 28, 2026
9	Berthon	Indirect evidence	Lymington, United KingdomHQ checked Sep 28, 2026	51-200	49 contacts →
	Indirect evidence “Berthon has been trading from our riverside site in Lymington since 1877.” Source: RevenueBase Database · checked Sep 28, 2026
10	Edwards Diving Services LTD	Partial evidence	Pontypridd, United KingdomHQ checked Sep 28, 2026	51-200	46 contacts →
	Partial evidence “EDWARDS DIVING SERVICES LIMITED (EDS) is a specialist Marine & Civil Engineering company located in South Wales, United Kingdom.” Source: RevenueBase Database · checked Sep 28, 2026
11	The Seaking Group	Partial evidence	Birkenhead, United KingdomHQ checked Sep 28, 2026	51-200	46 contacts →
	Partial evidence “The SeaKing Group offers specialist electrical engineering services to the marine, industrial, commercial, military and offshore sectors.” Source: RevenueBase Database · checked Sep 28, 2026
12	Triflex UK LTD	Indirect evidence	Stone, United KingdomHQ checked Sep 28, 2026	11-50	44 contacts →
	Indirect evidence “Triflex is the leading European specialist in cold liquid applied resins.” Source: RevenueBase Database · checked Sep 28, 2026
13	GPS Marine Contractors LTD	Strong evidence	Rochester, United KingdomHQ checked Sep 28, 2026	51-200	44 contacts →
	Strong evidence “Marine Contractors specialising in: Marine Civil Engineering and Construction.” Source: RevenueBase Database · checked Sep 28, 2026
14	Southbay Civil Engineering LTD	Strong evidence	Gateshead, United KingdomHQ checked Sep 28, 2026	51-200	43 contacts →
	Strong evidence “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…” Source: RevenueBase Database · checked Sep 28, 2026
15	Beckett Rankine	Partial evidence	Westminster, United KingdomHQ checked Sep 28, 2026	11-50	39 contacts →
	Partial evidence “Beckett Rankine is the UK's leading maritime engineering consultancy.” Source: RevenueBase Database · checked Sep 28, 2026
16	Chemco International	Partial evidence	Coatbridge, United KingdomHQ checked Sep 28, 2026	11-50	39 contacts →
	Partial evidence “At Chemco International, we have over 30 years experience in designing and manufacturing the most advanced speciality coatings for the Marine, Industrial, Offshore, Petrochemical…” Source: RevenueBase Database · checked Sep 28, 2026
17	Proteus Waterproofing	Partial evidence	Rayleigh, United KingdomHQ checked Sep 28, 2026	11-50	37 contacts →
	Partial evidence “Proteus Waterproofing is the one-stop-solution provider for a total waterproofing and protection package.” Source: RevenueBase Database · checked Sep 28, 2026
18	Keynvor Morlift LTD	Partial evidence	Falmouth, United KingdomHQ checked Sep 28, 2026	51-200	37 contacts →
	Partial evidence “Keynvor Morlift Ltd is a UK-based marine contracting and consulting firm.” Source: RevenueBase Database · checked Sep 28, 2026
19	Premcrete LTD	Partial evidence	Andover, United KingdomHQ checked Sep 28, 2026	11-50	36 contacts →
	Partial evidence “Premcrete is the leading British manufacturer of pre-applied waterproofing, ground heave mitigation and gas protection systems.” Source: RevenueBase Database · checked Sep 28, 2026
20	Cemplas Waterproofing & Concrete Repairs LTD	Partial evidence	Coulsdon, United KingdomHQ checked Sep 28, 2026	11-50	35 contacts →
	Partial evidence “CEMPLAS was established in 1969 and is a leading specialist contractor with extensive expertise in repairing and protecting a broad range of structure types, be they new or…” Source: RevenueBase Database · checked Sep 28, 2026
21	Diveco Marine LTD	Strong evidence	Northfleet, United KingdomHQ checked Sep 28, 2026	11-50	35 contacts →
	Strong evidence “A dynamic, award winning and multi-disciplined specialist contractor, providing civil engineering solutions for marine orientated projects, private and public sector projects.” Source: RevenueBase Database · checked Sep 28, 2026
22	Leask Marine LTD	Partial evidence	Kirkwall, United KingdomHQ checked Sep 28, 2026	11-50	32 contacts →
	Partial evidence “Leask Marine provide an unprecedented range of uniquely developed processes and equipment to support the mobilisation, deployment, installation, commissioning, service and…” Source: RevenueBase Database · checked Sep 28, 2026
23	Metalyte Pipeworks	Indirect evidence	Tamworth, United KingdomHQ checked Sep 28, 2026	51-200	30 contacts →
	Indirect evidence “The UK’s leader in pipeline, vessel & structural repair solutions for global offshore/onshore oil and gas operations.” Source: RevenueBase Database · checked Sep 28, 2026
24	Newton Waterproofing Systems	Indirect evidence	Tonbridge, United KingdomHQ checked Sep 28, 2026	11-50	29 contacts →
	Indirect evidence “Welcome to Newton.” Source: RevenueBase Database · checked Sep 28, 2026
25	Structurecare	Partial evidence	Sheffield, United KingdomHQ checked Sep 28, 2026	11-50	28 contacts →
	Partial evidence “A specialist installation, repair and maintenance contractor, providing a range of market-leading construction products and services covering the infrastructure, industrial…” 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 waterproofing contractors. 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 waterproofing contractors.
Partial evidence: Its own public description names part of marine waterproofing contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name marine waterproofing contractors. 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 360 marine waterproofing contractors based in the United Kingdom

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 1,043 reachable decision-makers.

Free signup · no credit card

View the full list →

Marine waterproofing contractors based in the United Kingdom at a glance

As of Sep 28, 2026

32.3%Verified-email coverage

9.0Average contacts per company

1-10Median size (employees)

11.9%Largest-city concentration · London

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

185

11-50

124

51-200

201-500

501-1,000

1,001-5,000

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 360 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 waterproofing contractors, 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 waterproofing contractors”. 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 waterproofing contractors), 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 waterproofing contractors, 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, 1,043 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 waterproofing contractors by metro

Marine waterproofing contractors in London43

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 waterproofing contractors, 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 waterproofing contractors are there based in the United Kingdom?

RevenueBase identified 360 marine waterproofing contractors 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?

Modutec, headquartered in Aberdeen, tops this list with the largest team on record.

Which city has the most marine waterproofing contractors?

London leads with 43 headquartered companies, followed by Southampton (14) and Poole (6).

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 1,043 verified decision-maker contacts tracked across these 360 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.

Ready to reach these companies? Verified emails and direct dials for all 360 marine waterproofing contractors based in the United Kingdom. Start with a free account, no credit card.

Download this list →

Related lists

Marine waterproofing contractors by geography

Browse the directory

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.