Company lists · Data refreshed October 2026

Top 25 Chemical plant construction contractors based in the United Kingdom

Name: Chemical plant construction contractors based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 9, 2026 137 companies tracked

RevenueBase identified 137 company matches for chemical plant construction contractors associated with the United Kingdom as of October 2026 and tracks 2,222 professional contacts across them, including 497 with verified work emails. London is the largest hub.

This list covers company matches for chemical plant construction contractors associated with the United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed October 9, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Oct 9, 2026 How this list was built

137Companies

2,222Contacts tracked

497Verified emails

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The 25 largest chemical plant construction contractors based in the United Kingdom

Ranked by team size

Top 25 of 137 company matches for chemical plant construction contractors based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 9, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Ledwood Mechanical Engineering LTD	Exact match	Pembrokeshire, United KingdomHQ recorded Oct 9, 2026	501-1,000	280 contacts →
	Exact match “Ledwood is an independent engineering, fabrication and construction company specialising in the delivery of complex projects across the oil, gas, process and energy industries.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
2	Enka UK Construction Limited	Exact match	London, United KingdomHQ recorded Oct 9, 2026	10001+	136 contacts →
	Exact match “ENKA UK Construction Limited is a commercial real estate company based out of 7 Henrietta Street C/O Redfern Legal LLP, London, United Kingdom.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
3	Unitbirwelco	Exact match	Elba Crescent, United KingdomHQ recorded Oct 9, 2026	201-500	120 contacts →
	Exact match “As a leading expert in thermal equipment, UnitBirwelco is dedicated to delivering excellence in design, project management, manufacturing, fabrication, construction, and…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
4	Wright Engineering	Exact match	Worksop, United KingdomHQ recorded Oct 9, 2026	51-200	100 contacts →
	Exact match “For over 40 years, Wright Engineering has delivered complex industrial engineering projects that keep some of the UK's most demanding industries moving.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
5	Zeppelin Systems UK	Exact match	Nottingham, United KingdomHQ recorded Oct 9, 2026	1,001-5,000	99 contacts →
	Exact match “Zeppelin Systems specialises in industrial plants' design, construction, and technological upgrading for storing, conveying, mixing, dosing, and weighing high-quality bulk…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
6	Barrier Group	Exact match	Wallsend, United KingdomHQ recorded Oct 9, 2026	201-500	98 contacts →
	Exact match “Founded in 1975 in the North East of England, Barrier Group is a multi-disciplined turnkey engineering, design, and build contractor with over 50 years’ experience across…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
7	CAT Tech International LTD	Exact match	Scunthorpe, United KingdomHQ recorded Oct 9, 2026	201-500	95 contacts →
	Exact match “A specialist industrial services group that supports the global oil refining and petrochemical industries, based in North Lincolnshire, United Kingdom, Cat Tech International Ltd.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
8	K Home International	Exact match	Stockton-on-tees, United KingdomHQ recorded Oct 9, 2026	51-200	82 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
9	Kirstall Limited	Exact match	Nantwich, United KingdomHQ recorded Oct 9, 2026	51-200	74 contacts →
	Exact match “We are a successful mechanical installation company offering services to the Oil & Gas / Petro-Chemical Industries.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
10	JBA Engineering	Exact match	Wynyard, United KingdomHQ recorded Oct 9, 2026	11-50	65 contacts →
	Exact match “JBA are industry-leading consultants, providing flexible engineering and design solutions, procurement, and construction services.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
11	Simon Carves	Exact match	Manchester, United KingdomHQ recorded Oct 9, 2026	51-200	47 contacts →
	Exact match “Simon Carves Engineering is a full-service Process Engineering Contractor, providing a comprehensive range of services to the Process and Energy industries worldwide.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
12	Enerfac Solutions	Exact match	London, United KingdomHQ recorded Oct 9, 2026	51-200	41 contacts →
	Exact match “Enerfac Solutions is a global leader in Engineering, Procurement, Construction, and Commissioning (EPCC), delivering innovative, reliable, and technologically advanced services…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
13	Eesb Engineering Limited	Exact match	Birkenhead, United KingdomHQ recorded Oct 9, 2026	11-50	39 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
14	Flotech Performance Systems	Exact match	Chichester, United KingdomHQ recorded Oct 9, 2026	11-50	38 contacts →
	Exact match “Flotech Performance Systems is a manufacturer and turnkey solutions provider to the Petrochemical, Process and Energy sectors.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
15	DLT Engineering LTD	Exact match	Higham Ferrers, United KingdomHQ recorded Oct 9, 2026	51-200	37 contacts →
	Exact match “We develop, manufacture and operate the specialist technology for modular construction of bridges, dams, refineries, power stations, offshore structures, buildings and…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
16	Rhames	Exact match	Nottingham, United KingdomHQ recorded Oct 9, 2026	51-200	36 contacts →
	Exact match “rhames are innovators within the Manufacturing & Engineering Services sector specialising in Pharmaceutical, Petrochemical and Utilities industries with key representations within…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
17	Chem Resist Group LTD	Exact match	Dewsbury, United KingdomHQ recorded Oct 9, 2026	51-200	31 contacts →
	Exact match “Chem Resist Group is one of Europe’s leading design and manufacturing specialist in the field of Thermoplastic Process Plant.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
18	Enisca	Exact match	Cookstown, United KingdomHQ recorded Oct 9, 2026	51-200	27 contacts →
	Exact match “Enisca is a multi-disciplinary design, engineering and construction business operating in the power and environmental sectors delivering innovative, sustainable and quality…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
19	HTS Engineering Group LTD	Exact match	Runcorn, United KingdomHQ recorded Oct 9, 2026	11-50	22 contacts →
	Exact match “HTS Engineering is a complete multi discipline engineering partner delivering a complete Design, Build & Maintain Engineering Solution that fills the GAP between large and medium…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
20	Prodecon	Exact match	Nantwich, United KingdomHQ recorded Oct 9, 2026	11-50	21 contacts →
	Exact match “ProDecon is a leading provider of turnkey chemical cleaning, refinery decontamination and pre-commissioning cleaning services.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
21	Jacquet Weston Engineering	Exact match	Hungerford, United KingdomHQ recorded Oct 9, 2026	11-50	20 contacts →
	Exact match “Jacquet Weston Engineering was established in 1973 and is a private limited company, we are market leaders in the design, manufacture, installation and management of process plant…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
22	OWS Engineering Services	Exact match	Birkenhead, United KingdomHQ recorded Oct 9, 2026	51-200	18 contacts →
	Exact match “OWS Engineering Services are an established pipe services, engineering and steel fabrication company motivated by helping to find solutions to your individual engineering problems.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
23	Ponticelli UK	Exact match	Aberdeen, United KingdomHQ recorded Oct 9, 2026	501-1,000	17 contacts →
	Exact match “Ponticelli have over 100 years’ experience delivering industrial scale ENGINEERING, CONSTRUCTION and MAINTENANCE contracts for international clients, employing over people…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
24	AI Process Systems LTD	Exact match	Barrowford, United KingdomHQ recorded Oct 9, 2026	11-50	16 contacts →
	Exact match “Ai Process Systems Ltd are an engineering consultancy organisation that specialise in process design and project management for the manufacturing, process and packaging industries.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
25	AXI	Exact match	Hull, United KingdomHQ recorded Oct 9, 2026	11-50	14 contacts →
	Exact match “Axi was founded by industry experienced professionals with expertise in engineering, design, projects, and operations.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “chemical plant construction contractors”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 137 chemical plant construction contractors based in the United Kingdom

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Chemical plant construction contractors based in the United Kingdom at a glance

As of Oct 9, 2026

22.4%Verified-email coverage

16.2Average contacts per company

11-50Median size (employees)

10.2%Largest-city concentration · London

Oct 9, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

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 137 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with the United Kingdom whose business descriptions match “chemical plant construction contractors” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 497 professional contacts with verified work emails across the full matched dataset. 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 October 9, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “chemical plant construction contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many chemical plant construction contractors are there based in the United Kingdom?

RevenueBase identified 137 company matches for chemical plant construction contractors associated with the United Kingdom as of October 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Ledwood Mechanical Engineering LTD tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most chemical plant construction contractors?

London leads with 14 company records, followed by Manchester (5) and Birkenhead (3).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 497 professional contacts with verified work emails tracked across these 137 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 9, 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 SmartSearch, 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.