Company lists · Data refreshed October 2026

Top 18 Plant turnaround and maintenance contractors based in the United Kingdom

Name: Plant turnaround and maintenance 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 22, 2026 34 companies tracked

RevenueBase identified 34 company matches for plant turnaround and maintenance contractors associated with the United Kingdom as of October 2026 and tracks 3,402 professional contacts across them, including 437 with verified work emails. London is the largest hub.

This list covers company matches for plant turnaround and maintenance 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 22, 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 22, 2026 How this list was built

34Companies

3,402Contacts tracked

437Verified emails

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The 18 largest plant turnaround and maintenance contractors based in the United Kingdom

Ranked by team size

Top 18 of 34 company matches for plant turnaround and maintenance contractors based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 22, 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	Brand Energy & Infrastructure Services	Exact match	United KingdomHQ recorded Oct 22, 2026	10001+	2,739 contacts →
	Exact match “Brand Energy & Infrastructure Services supports customers’ maintenance, turnaround and refurbishment needs as well as new construction, capital-driven upgrades and expansion…” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
2	Rainham Industrial Services LTD	Exact match	Essex, United KingdomHQ recorded Oct 22, 2026	501-1,000	264 contacts →
	Exact match “Rainham provides specialist industrial services that support the installation, maintenance, refurbishment, decommissioning and replacement of large industrial plants and building…” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
3	CAT Tech International LTD	Exact match	Scunthorpe, United KingdomHQ recorded Oct 22, 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 22, 2026 · View company records in RevenueBase
4	CDS Energy Services	Exact match	Hull, United KingdomHQ recorded Oct 22, 2026	51-200	42 contacts →
	Exact match “CDS Energy Services combines talented and experienced people with a state-of the art facility in the heart of the UK to provide full turnkey solutions to a range of blue chip…” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
5	Flotech Performance Systems	Exact match	Chichester, United KingdomHQ recorded Oct 22, 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 22, 2026 · View company records in RevenueBase
6	AIS Vanguard	Exact match	Wigan, United KingdomHQ recorded Oct 22, 2026	51-200	36 contacts →
	Exact match “Part of the Ainscough Industrial Services Group, AIS Vanguard is a specialist in all aspects of industrial services, providing a turnkey offering for factory relocations…” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
7	Jemsar Engineering Limited	Exact match	Cardiff, United KingdomHQ recorded Oct 22, 2026	11-50	30 contacts →
	Exact match “Jemsar Engineering Limited is a focused, safe and cost effective business, aimed at supporting all major clients and contractors with maintenance and turnarounds around the UK.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
8	EMC Elite Engineering Services LTD	Exact match	West Horndon, United KingdomHQ recorded Oct 22, 2026	11-50	24 contacts →
	Exact match “EMC Elite Engineering Services has combined power and heavy engineering & process industry expertise.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
9	Prodecon	Exact match	Nantwich, United KingdomHQ recorded Oct 22, 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 22, 2026 · View company records in RevenueBase
10	Mecsol	Exact match	Bristol, United KingdomHQ recorded Oct 22, 2026	11-50	13 contacts →
	Exact match “Providing mechanical and electrical turnkey solutions in addition to project based delivery alongside industry partners.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
11	Architectural Coating Solutions ACS	Exact match	Manchester, United KingdomHQ recorded Oct 22, 2026	11-50	10 contacts →
	Exact match “Architectural Coating Solutions (ACS) offer turnkey solutions to protect, maintain, and restore industrial facilities.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
12	Turnaco Limited	Exact match	Weybridge, United KingdomHQ recorded Oct 22, 2026	1-10	4 contacts →
	Exact match “Consultancy support to optimize asset Operational Efficiency and Strategic Planning support with specific focus on assurance and optimization of Turnarounds/Shutdowns or…” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
13	Asteris	Exact match	Swansea, United KingdomHQ recorded Oct 22, 2026	1-10	2 contacts →
	Exact match “ASTERIS UK is a Project Management company that specialises in planning, preparation and delivery of industrial projects of any size.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
14	FFS International	Exact match	Edinburgh, United KingdomHQ recorded Oct 22, 2026	1-10	2 contacts →
	Exact match “FFS International (FFSI) is an innovator of technology, plant design, project management and commissioning of industrial processes.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
15	Tallis Engineering & Consulting Services	Exact match	Pembroke, United KingdomHQ recorded Oct 22, 2026	1-10	2 contacts →
	Exact match “Providing specialist support to turnarounds and outages in the Oil, Gas & Petrochemical sectors” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
16	Contract Resources LTD	Exact match	Kent, United KingdomHQ recorded Oct 22, 2026	51-200	1 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
17	Ispecc Limited	Exact match	Shropshire, United KingdomHQ recorded Oct 22, 2026	1-10	1 contacts →
	Exact match “Industrial Services, Projects, Equipment, Controls and Consultancy” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
18	Capacitate Consulting Limited	Exact match	Norwich, United KingdomHQ recorded Oct 22, 2026	1-10	1 contacts →
	Exact match “Capacitate Consulting Limited provides specialist consultant services in support of Shutdowns, Turnarounds (TAR) & Outages (STO) based on many years of direct experience both in…” Recorded in the RevenueBase company graph · Oct 22, 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 “plant turnaround and maintenance 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 18 of 34 plant turnaround and maintenance contractors based in the United Kingdom

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Plant turnaround and maintenance contractors based in the United Kingdom at a glance

As of Oct 22, 2026

12.8%Verified-email coverage

100.1Average contacts per company

11-50Median size (employees)

8.8%Largest-city concentration · London

Oct 22, 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 34 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 “plant turnaround and maintenance 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 437 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 22, 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 “plant turnaround and maintenance contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many plant turnaround and maintenance contractors are there based in the United Kingdom?

RevenueBase identified 34 company matches for plant turnaround and maintenance 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?

Brand Energy & Infrastructure Services tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most plant turnaround and maintenance contractors?

London leads with 3 company records, followed by Bristol (1) and Cardiff (1).

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 437 professional contacts with verified work emails tracked across these 34 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 22, 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.