Company lists · Data refreshed September 2026

Top 25 Oil and gas processing plant contractors based in the United Kingdom

Name: Oil and gas processing plant 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 17, 2026 273 companies tracked

RevenueBase identified 273 oil and gas processing plant contractors headquartered in the United Kingdom as of September 2026 and tracks 37,342 professional contacts across them, including 5,894 with verified work emails. London is the largest hub.

This list covers oil and gas processing plant 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 17, 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 17, 2026 86% judged on-target in blind review

273Companies

37,342Contacts tracked

5,894Verified emails

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The 25 largest oil and gas processing plant contractors based in the United Kingdom

Ranked by team size

Top 25 of 273 oil and gas processing plant contractors based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to oil and gas processing plant 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	Amec Foster Wheeler	Indirect evidence	Aberdeen, United KingdomHQ checked Sep 17, 2026	10001+	14,368 contacts →
	Indirect evidence “Wood Group has combined with Amec Foster Wheeler to form a new global leader in the delivery of project, engineering and technical services to energy and industrial markets.” Source: RevenueBase Database · checked Sep 17, 2026
2	Petrofac	Indirect evidence	London, United KingdomHQ checked Sep 17, 2026	5,001-10,000	13,261 contacts →
	Indirect evidence “We are a leading international service provider to the energy industry, with a diverse client portfolio including many of the world’s leading energy companies.” Source: RevenueBase Database · checked Sep 17, 2026
3	Murphy	Indirect evidence	London, United KingdomHQ checked Sep 17, 2026	1,001-5,000	3,095 contacts →
	Indirect evidence “Murphy is a leading international, multi-disciplined engineering and construction company founded in 1951 that improves life by delivering world-class infrastructure.” Source: RevenueBase Database · checked Sep 17, 2026
4	Pd&ms Group	Indirect evidence	Aberdeen, United KingdomHQ checked Sep 17, 2026	501-1,000	653 contacts →
	Indirect evidence “PD & MS Group has full multi-discipline in-house EPCC capability and is recognised as a provider of safe, effective, and cost efficient design and engineering services to onshore…” Source: RevenueBase Database · checked Sep 17, 2026
5	PBS By Ponticelli	Indirect evidence	Westhill, United KingdomHQ checked Sep 17, 2026	501-1,000	473 contacts →
	Indirect evidence “Ponticelli, Brand and Semco joined forces in 2019 to establish “PBS by Ponticelli”, an Aberdeen-based integrated services consortium led by Ponticelli.” Source: RevenueBase Database · checked Sep 17, 2026
6	Ineos Grangemouth	Indirect evidence	Grangemouth, United KingdomHQ checked Sep 17, 2026	1,001-5,000	466 contacts →
	Indirect evidence “Located at Grangemouth, some 40km west of Edinburgh, one of INEOS’ largest manufacturing sites directly employs c1500 highly skilled people.” Source: RevenueBase Database · checked Sep 17, 2026
7	NEXOS	Indirect evidence	Aberdeen, United KingdomHQ checked Sep 17, 2026	501-1,000	446 contacts →
	Indirect evidence “A new breed of engineering, procurement and construction (EPC) provider that is turning next-gen energy into operational reality, through innovative solutions, partnerships and…” Source: RevenueBase Database · checked Sep 17, 2026
8	Claxton Engineering Services	Indirect evidence	Great Yarmouth, United KingdomHQ checked Sep 17, 2026	201-500	279 contacts →
	Indirect evidence “Claxton, an AF Gruppen Company, combines decades of industry experience, proprietary technology, and exceptional service quality to cut through offshore installation and…” Source: RevenueBase Database · checked Sep 17, 2026
9	Ledwood Mechanical Engineering LTD	Strong evidence	Pembrokeshire, United KingdomHQ checked Sep 17, 2026	501-1,000	266 contacts →
	Strong evidence “Ledwood is an independent engineering, fabrication and construction company specialising in the delivery of complex projects across the oil, gas, process and energy industries.” Source: RevenueBase Database · checked Sep 17, 2026
10	Radius Systems	Partial evidence	South Normanton, United KingdomHQ checked Sep 17, 2026	201-500	195 contacts →
	Partial evidence “Part of Radius Group Holdings, Radius Systems is proud to be the pipeline experts for the gas, water, energy, power and telecoms sectors.” Source: RevenueBase Database · checked Sep 17, 2026
11	Wilton Engineering	Indirect evidence	Middlesbrough, United KingdomHQ checked Sep 17, 2026	201-500	188 contacts →
	Indirect evidence “Wilton Engineering is a multi-disciplined Engineering Services provider based on a 113 acre site by the River Tees in Middlesbrough, North-East England.” Source: RevenueBase Database · checked Sep 17, 2026
12	Eastgate Engineering	Partial evidence	Thornaby-on-tees, United KingdomHQ checked Sep 17, 2026	201-500	163 contacts →
	Partial evidence “Eastgate Engineering is an Electrical and Instrumentation contractor that delivers complex, high-risk infrastructure projects with cost certainty, without compromising safety or…” Source: RevenueBase Database · checked Sep 17, 2026
13	Forsyths LTD	Indirect evidence	Rothes, United KingdomHQ checked Sep 17, 2026	201-500	124 contacts →
	Indirect evidence “Forsyths Ltd is the fabrication division of The Forsyth Group, operating from four strategically located fabrication facilities in the North East of Scotland.” Source: RevenueBase Database · checked Sep 17, 2026
14	Aquaterra Group LTD	Indirect evidence	Kintore, United KingdomHQ checked Sep 17, 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 17, 2026
15	Unitbirwelco	Indirect evidence	Elba Crescent, United KingdomHQ checked Sep 17, 2026	201-500	117 contacts →
	Indirect evidence “As a leading expert in thermal equipment, UnitBirwelco is dedicated to delivering excellence in design, project management, manufacturing, fabrication, construction, and…” Source: RevenueBase Database · checked Sep 17, 2026
16	Cavendish Northern Limited	Indirect evidence	Billingham, United KingdomHQ checked Sep 17, 2026	51-200	111 contacts →
	Indirect evidence “CAVENDISH NORTHERN LTD (CNL) ARE A PIPEWORK AND MECHANICAL INSTALLATION CONTRACTING COMPANY.” Source: RevenueBase Database · checked Sep 17, 2026
17	Derrick Services UK LTD	Strong evidence	Great Yarmouth, United KingdomHQ checked Sep 17, 2026	51-200	111 contacts →
	Strong 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 17, 2026
18	Petrex Energy Services Limited	Indirect evidence	Aberdeen, United KingdomHQ checked Sep 17, 2026	11-50	99 contacts →
	Indirect evidence “Innovative Engineering Excellence for the energy sector through our engineering design & field development divisions.” Source: RevenueBase Database · checked Sep 17, 2026
19	Elemental Energies	Indirect evidence	Aberdeen, United KingdomHQ checked Sep 17, 2026	201-500	89 contacts →
	Indirect evidence “Elemental Energies is a global engineering and project management business with a track record spanning more than 35 years.” Source: RevenueBase Database · checked Sep 17, 2026
20	Wright Engineering	Indirect evidence	Worksop, United KingdomHQ checked Sep 17, 2026	51-200	86 contacts →
	Indirect evidence “For over 40 years, Wright Engineering has delivered complex industrial engineering projects that keep some of the UK's most demanding industries moving.” Source: RevenueBase Database · checked Sep 17, 2026
21	Copius Group	Indirect evidence	Newtownabbey, United KingdomHQ checked Sep 17, 2026	201-500	81 contacts →
	Indirect 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 17, 2026
22	K Home International	Indirect evidence	Stockton-on-tees, United KingdomHQ checked Sep 17, 2026	51-200	80 contacts →
	Indirect evidence “With over 50 years of continued success, K Home International (KHI) is a family-owned, multi-discipline engineering design and construction company, based in Thornaby…” Source: RevenueBase Database · checked Sep 17, 2026
23	Boustead International Heaters	Indirect evidence	Burgess Hill, United KingdomHQ checked Sep 17, 2026	51-200	79 contacts →
	Indirect evidence “Boustead International Heaters is a leading global specialist in designing, engineering and supplying direct-fired process heater systems, waste heat recovery units and once…” Source: RevenueBase Database · checked Sep 17, 2026
24	RDS	Strong evidence	Aberdeen, United KingdomHQ checked Sep 17, 2026	1,001-5,000	70 contacts →
	Strong evidence “RDS is an engineering specialist working for oil and gas companies and major topsides and drilling contractors.” Source: RevenueBase Database · checked Sep 17, 2026
25	Kirstall Limited	Strong evidence	Nantwich, United KingdomHQ checked Sep 17, 2026	51-200	69 contacts →
	Strong evidence “We are a successful mechanical installation company offering services to the Oil & Gas / Petro-Chemical Industries.” Source: RevenueBase Database · checked Sep 17, 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: oil and gas processing plant 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 oil and gas processing plant contractors.
Partial evidence: Its own public description names part of oil and gas processing plant contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name oil and gas processing plant 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 273 oil and gas processing plant contractors based in the United Kingdom

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Oil and gas processing plant contractors based in the United Kingdom at a glance

As of Sep 17, 2026

15.8%Verified-email coverage

136.8Average contacts per company

11-50Median size (employees)

13.2%Largest-city concentration · London

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

111

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 273 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 oil and gas processing plant 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 “oil and gas processing plant 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 oil and gas processing plant 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 oil and gas processing plant 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, 5,894 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 17, 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.

Oil and gas processing plant contractors by metro

Oil and gas processing plant contractors in London36
Oil and gas processing plant contractors in Aberdeen30

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 oil and gas processing plant 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 oil and gas processing plant contractors are there based in the United Kingdom?

RevenueBase identified 273 oil and gas processing plant 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?

Amec Foster Wheeler, headquartered in Aberdeen, tops this list with the largest team on record.

Which city has the most oil and gas processing plant contractors?

London leads with 36 headquartered companies, followed by Aberdeen (30) and Birmingham (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 5,894 verified decision-maker contacts tracked across these 273 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 17, 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.