Company lists · Data refreshed September 2026

Top 25 Offshore platform maintenance companies based in the United Kingdom

Name: Offshore platform maintenance 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 29, 2026 237 companies tracked

RevenueBase identified 237 offshore platform maintenance companies headquartered in the United Kingdom as of September 2026 and tracks 8,400 professional contacts across them, including 2,448 with verified work emails. Aberdeen is the largest hub.

This list covers offshore platform maintenance 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 29, 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 29, 2026 86% judged on-target in blind review

237Companies

8,400Contacts tracked

2,448Verified emails

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The 25 largest offshore platform maintenance companies based in the United Kingdom

Ranked by team size

Top 25 of 237 offshore platform maintenance companies based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to offshore platform maintenance companies: 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	Altera Infrastructure	Partial evidence	Aberdeenshire, United KingdomHQ checked Sep 29, 2026	501-1,000	955 contacts →
	Partial evidence “Altera Infrastructure is a leading global energy infrastructure services group focused on the ownership and operation of offshore energy assets.” Source: RevenueBase Database · checked Sep 29, 2026
2	Dolphin Drilling	Partial evidence	Aberdeen, United KingdomHQ checked Sep 29, 2026	201-500	694 contacts →
	Partial evidence “Dolphin Drilling is the offshore drilling pioneer of the past and for the future.” Source: RevenueBase Database · checked Sep 29, 2026
3	Briggs Marine	Indirect evidence	Burntisland, United KingdomHQ checked Sep 29, 2026	501-1,000	387 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 29, 2026
4	Motive Offshore Group LTD	Partial evidence	Banff, United KingdomHQ checked Sep 29, 2026	201-500	283 contacts →
	Partial evidence “Motive Offshore Group specialises in the design, manufacture, rental, and inspection of marine and lifting equipment.” Source: RevenueBase Database · checked Sep 29, 2026
5	Swire Oilfield Services	Partial evidence	Aberdeen, United KingdomHQ checked Sep 29, 2026	501-1,000	202 contacts →
	Partial evidence “Swire Energy Services, part of the global conglomerate, the Swire group, is the world's largest supplier of specialist offshore cargo carrying units to the global energy industry…” Source: RevenueBase Database · checked Sep 29, 2026
6	Fletcher	Strong evidence	Portlethen, United KingdomHQ checked Sep 29, 2026	201-500	184 contacts →
	Strong evidence “Fletcher operate and manage a modern fleet of Offshore Platform Supply Vessels, employing over 300 people to support our operations.” Source: RevenueBase Database · checked Sep 29, 2026
7	Seatrium Offshore Renewable Services LTD	Partial evidence	Lowestoft, United KingdomHQ checked Sep 29, 2026	n/a	155 contacts →
	Partial evidence “Seatrium Offshore Renewable Services Ltd (Seatrium ORS) has over 55 years of unparalleled expertise and experience in the offshore energy industry.” Source: RevenueBase Database · checked Sep 29, 2026
8	Interocean Marine Services	Partial evidence	Portlethen, United KingdomHQ checked Sep 29, 2026	51-200	134 contacts →
	Partial evidence “Interocean provide a comprehensive range of services to the offshore oil and gas, marine, and renewable sectors.” Source: RevenueBase Database · checked Sep 29, 2026
9	Aquaterra Group LTD	Indirect evidence	Kintore, United KingdomHQ checked Sep 29, 2026	11-50	123 contacts →
	Indirect evidence “RELIABLE \| RESOURCEFUL \| READY We continually raise the bar by challenging ourselves and our clients to enable safe and efficient performance.” Source: RevenueBase Database · checked Sep 29, 2026
10	Derrick Services UK LTD	Indirect evidence	Great Yarmouth, United KingdomHQ checked Sep 29, 2026	51-200	111 contacts →
	Indirect evidence “Derrick Service UK Ltd (DSL) is a diversified oil & gas construction company which provides a broad range of products and services to the market from our Worldwide locations.” Source: RevenueBase Database · checked Sep 29, 2026
11	CTS Offshore & Marine	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	51-200	106 contacts →
	Partial evidence “CTS Offshore & Marine Ltd is an independent provider of engineering services tailored for energy and material markets.” Source: RevenueBase Database · checked Sep 29, 2026
12	Modutec	Partial evidence	Aberdeen, United KingdomHQ checked Sep 29, 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 29, 2026
13	Star International	Indirect evidence	Birkenhead, United KingdomHQ checked Sep 29, 2026	51-200	103 contacts →
	Indirect evidence “Star International specialises in keeping vessels safe and compliant.” Source: RevenueBase Database · checked Sep 29, 2026
14	Stowen	Partial evidence	Great Yarmouth, United KingdomHQ checked Sep 29, 2026	51-200	99 contacts →
	Partial evidence “Offering global technical services to the Renewable Energy, Oil & Gas and Marine sectors, on offshore and onshore customer assets and locations.” Source: RevenueBase Database · checked Sep 29, 2026
15	SMS Group Ship Repair Marine Interiors Marine Engineering SC Sqep	Indirect evidence	Southampton, United KingdomHQ checked Sep 29, 2026	51-200	89 contacts →
	Indirect 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 29, 2026
16	Awilco Drilling	Indirect evidence	Aberdeen, United KingdomHQ checked Sep 29, 2026	51-200	88 contacts →
	Indirect evidence “Awilco Drilling Limited was incorporated in December 2009 in connection with the acquisition of the two semi submersible drilling rigs, WilPhoenix (previously Arctic II) and…” Source: RevenueBase Database · checked Sep 29, 2026
17	Film-Ocean	Partial evidence	Ellon, United KingdomHQ checked Sep 29, 2026	51-200	68 contacts →
	Partial evidence “Film-Ocean provides innovative subsea solutions to the global offshore energy industry.” Source: RevenueBase Database · checked Sep 29, 2026
18	Atlantic Pacific Marine LTD	Indirect evidence	Cardiff, United KingdomHQ checked Sep 29, 2026	11-50	63 contacts →
	Indirect evidence “Atlantic Pacific Marine is your dedicated marine service specialist.” Source: RevenueBase Database · checked Sep 29, 2026
19	Highlandos	Partial evidence	Aberdeen, United KingdomHQ checked Sep 29, 2026	51-200	63 contacts →
	Partial evidence “We are an established and internationally recognised provider of premier Inspection, Repair, Maintenance, Rope Access and Training Services.” Source: RevenueBase Database · checked Sep 29, 2026
20	Maritime Craft Services Clyde Limited	Indirect evidence	Largs, United KingdomHQ checked Sep 29, 2026	51-200	59 contacts →
	Indirect evidence “Maritime Craft Services (clyde) Limited is a Maritime company located in Irvine Rd, Largs, United Kingdom.” Source: RevenueBase Database · checked Sep 29, 2026
21	Aventus Energy	Indirect evidence	Alness, United KingdomHQ checked Sep 29, 2026	11-50	57 contacts →
	Indirect evidence “Aventus Energy Ltd is a recently formed Scottish Highland based company operating from our bespoke premises in Alness.” Source: RevenueBase Database · checked Sep 29, 2026
22	First Marine Solutions	Indirect evidence	Aberdeen, United KingdomHQ checked Sep 29, 2026	51-200	55 contacts →
	Indirect evidence “First Marine Solutions is a leading international energy service and equipment organisation with operations worldwide, We provide expertise, technology, techniques and support…” Source: RevenueBase Database · checked Sep 29, 2026
23	Bartech Marine Engineering	Indirect evidence	Colchester, United KingdomHQ checked Sep 29, 2026	51-200	54 contacts →
	Indirect evidence “Providing Safety through Mechanical Excellence.” Source: RevenueBase Database · checked Sep 29, 2026
24	Crondall Energy	Partial evidence	Southampton, United KingdomHQ checked Sep 29, 2026	11-50	50 contacts →
	Partial evidence “Crondall Energy is an independent offshore energy consultancy specialising in floating and subsea facilities.” Source: RevenueBase Database · checked Sep 29, 2026
25	Marine Technical Limits LTD	Indirect evidence	Kintore, United KingdomHQ checked Sep 29, 2026	11-50	42 contacts →
	Indirect evidence “Marine Technical Limits was established in order to provide support to FPSOs worldwide.” Source: RevenueBase Database · checked Sep 29, 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: offshore platform maintenance companies. 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 offshore platform maintenance companies.
Partial evidence: Its own public description names part of offshore platform maintenance companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name offshore platform maintenance companies. 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 237 offshore platform maintenance companies based in the United Kingdom

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Offshore platform maintenance companies based in the United Kingdom at a glance

As of Sep 29, 2026

29.1%Verified-email coverage

35.4Average contacts per company

11-50Median size (employees)

15.2%Largest-city concentration · Aberdeen

Sep 29, 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 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 237 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 offshore platform maintenance companies, 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 “offshore platform maintenance companies”. 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 offshore platform maintenance companies), 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 offshore platform maintenance 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 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, 2,448 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 29, 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.

Offshore platform maintenance companies by metro

Offshore platform maintenance companies in Aberdeen36

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 offshore platform maintenance companies, 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 offshore platform maintenance companies are there based in the United Kingdom?

RevenueBase identified 237 offshore platform maintenance 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?

Altera Infrastructure, headquartered in Prospect Park, tops this list with the largest team on record.

Which city has the most offshore platform maintenance companies?

Aberdeen leads with 36 headquartered companies, followed by London (26) and Southampton (5).

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 2,448 verified decision-maker contacts tracked across these 237 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 29, 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.