Company lists · Data refreshed September 2026

Top 25 Hydrocarbon processing plant builders based in the United Kingdom

Name: Hydrocarbon processing plant builders based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 115 companies tracked

RevenueBase identified 115 hydrocarbon processing plant builders headquartered in the United Kingdom as of September 2026 and tracks 15,938 professional contacts across them, including 2,919 with verified work emails. London is the largest hub.

This list covers hydrocarbon processing plant builders 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 20, 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 20, 2026 86% judged on-target in blind review

115Companies

15,938Contacts tracked

2,919Verified emails

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The 25 largest hydrocarbon processing plant builders based in the United Kingdom

Ranked by team size

Top 25 of 115 hydrocarbon processing plant builders based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to hydrocarbon processing plant builders: 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	Petrofac	Indirect evidence	London, United KingdomHQ checked Sep 20, 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 20, 2026
2	Ineos Grangemouth	Indirect evidence	Grangemouth, United KingdomHQ checked Sep 20, 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 20, 2026
3	Claxton Engineering Services	Indirect evidence	Great Yarmouth, United KingdomHQ checked Sep 20, 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 20, 2026
4	Ledwood Mechanical Engineering LTD	Indirect evidence	Pembrokeshire, United KingdomHQ checked Sep 20, 2026	501-1,000	266 contacts →
	Indirect 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 20, 2026
5	Wilton Engineering	Indirect evidence	Middlesbrough, United KingdomHQ checked Sep 20, 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 20, 2026
6	Unitbirwelco	Indirect evidence	Elba Crescent, United KingdomHQ checked Sep 20, 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 20, 2026
7	Derrick Services UK LTD	Indirect evidence	Great Yarmouth, United KingdomHQ checked Sep 20, 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 20, 2026
8	Enka UK Construction Limited	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	10001+	104 contacts →
	Indirect evidence “ENKA UK Construction Limited is a commercial real estate company based out of 7 Henrietta Street C/O Redfern Legal LLP, London, United Kingdom.” Source: RevenueBase Database · checked Sep 20, 2026
9	Copius Group	Indirect evidence	Newtownabbey, United KingdomHQ checked Sep 20, 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 20, 2026
10	K Home International	Indirect evidence	Stockton-on-tees, United KingdomHQ checked Sep 20, 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 20, 2026
11	Boustead International Heaters	Indirect evidence	Burgess Hill, United KingdomHQ checked Sep 20, 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 20, 2026
12	RDS	Indirect evidence	Aberdeen, United KingdomHQ checked Sep 20, 2026	1,001-5,000	70 contacts →
	Indirect evidence “RDS is an engineering specialist working for oil and gas companies and major topsides and drilling contractors.” Source: RevenueBase Database · checked Sep 20, 2026
13	JBA Engineering	Indirect evidence	Wynyard, United KingdomHQ checked Sep 20, 2026	11-50	63 contacts →
	Indirect evidence “JBA are industry-leading consultants, providing flexible engineering and design solutions, procurement, and construction services.” Source: RevenueBase Database · checked Sep 20, 2026
14	Simon Carves	Indirect evidence	Manchester, United KingdomHQ checked Sep 20, 2026	51-200	44 contacts →
	Indirect evidence “Simon Carves Engineering is a full-service Process Engineering Contractor, providing a comprehensive range of services to the Process and Energy industries worldwide.” Source: RevenueBase Database · checked Sep 20, 2026
15	Quanta EPC	Indirect evidence	Cramlington, United KingdomHQ checked Sep 20, 2026	51-200	42 contacts →
	Indirect evidence “Quanta delivers engineering, procurement and construction services to the energy industry, working in partnership with our clients to provide integrated end to end solutions…” Source: RevenueBase Database · checked Sep 20, 2026
16	OSL Consulting Engineers	Indirect evidence	Hull, United KingdomHQ checked Sep 20, 2026	51-200	41 contacts →
	Indirect evidence “OSL is a multi-disciplined team of creative, forward thinking technical specialists, working collaboratively with the energy and related sectors to provide quality implemented…” Source: RevenueBase Database · checked Sep 20, 2026
17	Enerfac Solutions	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	51-200	38 contacts →
	Indirect evidence “Enerfac Solutions is a global leader in Engineering, Procurement, Construction, and Commissioning (EPCC), delivering innovative, reliable, and technologically advanced services…” Source: RevenueBase Database · checked Sep 20, 2026
18	Flotech Performance Systems	Indirect evidence	Chichester, United KingdomHQ checked Sep 20, 2026	11-50	35 contacts →
	Indirect evidence “Flotech Performance Systems is a manufacturer and turnkey solutions provider to the Petrochemical, Process and Energy sectors.” Source: RevenueBase Database · checked Sep 20, 2026
19	Eesb Engineering Limited	Indirect evidence	Birkenhead, United KingdomHQ checked Sep 20, 2026	11-50	33 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026
20	Consub	Indirect evidence	Surbiton, United KingdomHQ checked Sep 20, 2026	11-50	32 contacts →
	Indirect evidence “CONSUB is an independent engineering and project management services provider to the global energy industry.” Source: RevenueBase Database · checked Sep 20, 2026
21	NSES	Indirect evidence	Dyce, United KingdomHQ checked Sep 20, 2026	11-50	29 contacts →
	Indirect evidence “North Sea Energy Services (NSES) is a multi‑discipline engineering, fabrication and offshore construction company supporting the Oil & Gas, Renewables and wider Energy sectors.” Source: RevenueBase Database · checked Sep 20, 2026
22	Petro GAS LLP	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	501-1,000	28 contacts →
	Indirect evidence “PetroGas” Company was founded in 1998.” Source: RevenueBase Database · checked Sep 20, 2026
23	Probe Manufacturing And Fabrication	Indirect evidence	Gorleston, United KingdomHQ checked Sep 20, 2026	11-50	27 contacts →
	Indirect evidence “Probe has a long and well-established track record dating back over 40 years.” Source: RevenueBase Database · checked Sep 20, 2026
24	Wellvene	Indirect evidence	Aberdeen, United KingdomHQ checked Sep 20, 2026	1-10	24 contacts →
	Indirect evidence “Wellvene is an innovative design engineering and manufacturing company.” Source: RevenueBase Database · checked Sep 20, 2026
25	G R Carr Essex LTD	Indirect evidence	Basildon, United KingdomHQ checked Sep 20, 2026	51-200	24 contacts →
	Indirect evidence “Founded in 1970, GR Carr (Essex) Ltd.” Source: RevenueBase Database · checked Sep 20, 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: hydrocarbon processing plant builders. 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 hydrocarbon processing plant builders.
Partial evidence: Its own public description names part of hydrocarbon processing plant builders, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name hydrocarbon processing plant builders. 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 115 hydrocarbon processing plant builders based in the United Kingdom

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Hydrocarbon processing plant builders based in the United Kingdom at a glance

As of Sep 20, 2026

18.3%Verified-email coverage

138.6Average contacts per company

11-50Median size (employees)

19.1%Largest-city concentration · London

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

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 115 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 hydrocarbon processing plant builders, 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 “hydrocarbon processing plant builders”. 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 hydrocarbon processing plant builders), 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 hydrocarbon processing plant builders, 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, 2,919 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 20, 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.

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 hydrocarbon processing plant builders, 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 hydrocarbon processing plant builders are there based in the United Kingdom?

RevenueBase identified 115 hydrocarbon processing plant builders 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?

Petrofac, headquartered in London, tops this list with the largest team on record.

Which city has the most hydrocarbon processing plant builders?

London leads with 22 headquartered companies, followed by Aberdeen (9) and Great Yarmouth (3).

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 2,919 verified decision-maker contacts tracked across these 115 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 20, 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.