Company lists · Data refreshed September 2026
Top 25 Offshore platform electrical contractors based in the United Kingdom
RevenueBase identified 1,931 offshore platform electrical contractors headquartered in the United Kingdom as of September 2026 and tracks 13,769 professional contacts across them, including 3,772 with verified work emails. London is the largest hub.
This list covers offshore platform electrical 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 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.
The 25 largest offshore platform electrical contractors based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 412 contacts → | ||||
Partial evidence “Quartzelec is a leading independent electrical engineering group delivering solutions and services in both UK and global markets.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 194 contacts → | ||||
Partial evidence “Dron & Dickson are specialists in integrated supply, installation and maintenance of harsh & hazardous area electrical equipment.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 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, 2026Thanks. The Data Team will review it. | |||||
| 4 | 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, 2026Thanks. The Data Team will review it. | |||||
| 5 | 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, 2026Thanks. The Data Team will review it. | |||||
| 6 | 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, 2026Thanks. The Data Team will review it. | |||||
| 7 | 105 contacts → | ||||
Partial evidence “Rock Power Connections are experts in electrical connections with a proven track record of quality and safety.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 103 contacts → | ||||
Partial evidence “Repair, Conversion and New Build of Marine and Offshore Living Quarters and Technical Buildings.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 85 contacts → | ||||
Indirect evidence “FoundOcean boasts 60 years’ experience of providing green and brown field services to the marine construction industries.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 81 contacts → | ||||
Partial evidence “Copius Group is a premier provider of construction and engineering services, delivering comprehensive solutions for offshore and onshore projects across the globe.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 81 contacts → | ||||
Indirect evidence “Established over 30 years ago, Relay was incorporated in 1989 as Relay South-West, later changing its name to Relay Engineering in January 2007.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 79 contacts → | ||||
Indirect evidence “AKD’s clients get quick results, normally leading to reduced costs and gaining an improved service.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 58 contacts → | ||||
Partial evidence “Premier Electrics have been delivering exciting projects throughout Ireland, UK and Europe since 1993.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 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, 2026Thanks. The Data Team will review it. | |||||
| 15 | 56 contacts → | ||||
Partial evidence “01902 894871 Marking its 25th anniversary this year, Orton is a leading provider of electrical, mechanical, installation and maintenance services covering both commercial and…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 55 contacts → | ||||
Strong evidence “Electrical and Mechanical Contractors.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 54 contacts → | ||||
Indirect evidence “AFS Ltd is an independently owned manufacturing company.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 53 contacts → | ||||
Partial evidence “RJ Power Group is a specialist electrical contracting business, providing engineering solutions in the power sector.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 51 contacts → | ||||
Partial evidence “Wiggett Electrical has gone from strength to strength.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 51 contacts → | ||||
Partial evidence “NES is an Industrial and Commercial Electrical Engineering and Contracting business, based in the North and North East of Scotland.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 50 contacts → | ||||
Partial evidence “Crondall Energy is an independent offshore energy consultancy specialising in floating and subsea facilities.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 48 contacts → | ||||
Partial evidence “High Voltage Engineers providing services in High Voltage Maintenance, Operations and Installation to private network operators both on and offshore.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 48 contacts → | ||||
Partial evidence “Since 1998, Powercor have specialised in every aspect of electrical engineering.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 46 contacts → | ||||
Strong evidence “The SeaKing Group offers specialist electrical engineering services to the marine, industrial, commercial, military and offshore sectors.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 25 | 43 contacts → | ||||
Indirect evidence “Welcome to the CD Engineering Services Ltd.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
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 electrical 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 offshore platform electrical contractors.
- Partial evidence
- Its own public description names part of offshore platform electrical contractors, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name offshore platform electrical 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 1,931 offshore platform electrical contractors based in the United Kingdom
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Offshore platform electrical contractors based in the United Kingdom at a glance
As of Sep 29, 2026Companies by employee count
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 1,931 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 electrical 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 “offshore platform electrical 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 offshore platform electrical 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 offshore platform electrical 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, 3,772 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 electrical contractors by metro
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 electrical 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 offshore platform electrical contractors are there based in the United Kingdom?
RevenueBase identified 1,931 offshore platform electrical 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?
Quartzelec Limited, headquartered in Rugby, tops this list with the largest team on record.
Which city has the most offshore platform electrical contractors?
London leads with 90 headquartered companies, followed by Manchester (28) and Southampton (21).
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 3,772 verified decision-maker contacts tracked across these 1,931 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.
Ready to reach these companies? Verified emails and direct dials for all 1,931 offshore platform electrical contractors based in the United Kingdom. Start with a free account, no credit card.
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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.
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