Company lists · Data refreshed October 2026

Top 25 Boilermaker contractors based in the United Kingdom

Name: Boilermaker 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 589 companies tracked

RevenueBase identified 589 company matches for boilermaker contractors associated with the United Kingdom as of October 2026 and tracks 3,241 professional contacts across them, including 795 with verified work emails. London is the largest hub.

This list covers company matches for boilermaker 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

589Companies

3,241Contacts tracked

795Verified emails

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The 25 largest boilermaker contractors based in the United Kingdom

Ranked by team size

Top 25 of 589 company matches for boilermaker 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	Cavendish Northern Limited	Exact match	Billingham, United KingdomHQ recorded Oct 9, 2026	51-200	120 contacts →
	Exact match “CAVENDISH NORTHERN LTD (CNL) ARE A PIPEWORK AND MECHANICAL INSTALLATION CONTRACTING COMPANY.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
2	Cochran	Exact match	Annan, United KingdomHQ recorded Oct 9, 2026	201-500	119 contacts →
	Exact match “Cochran has been embedded within industrial boiler manufacturing since 1878.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
3	JBC	Exact match	Normanton, United KingdomHQ recorded Oct 9, 2026	51-200	91 contacts →
	Exact match “JBC Industrial Services is the leading name in Industrial Boiler and Burner service, maintenance, and repair.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
4	Armultra Limited	Exact match	Great Yarmouth, United KingdomHQ recorded Oct 9, 2026	51-200	77 contacts →
	Exact match “Armultra Ltd is a privately owned business and has been providing engineering solutions from its facility in Great Yarmouth since 1985.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
5	James Ramsay	Exact match	Glasgow, United KingdomHQ recorded Oct 9, 2026	51-200	59 contacts →
	Exact match “Heating - Pipework - Process - Maintenance.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
6	Rhyal Engineering Limited	Exact match	Milford Haven, United KingdomHQ recorded Oct 9, 2026	51-200	57 contacts →
	Exact match “Storage Tanks, Vessels, Piping, Steelwork, Fabrication & Installation Services.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
7	Allerton Steel LTD	Exact match	Northallerton, United KingdomHQ recorded Oct 9, 2026	51-200	52 contacts →
	Exact match “Allerton Steel specialises in heavy (lifting capacity over 50te), complex, and/or high weld content steel fabrication, plate & box girders.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
8	Hambleton Steel	Exact match	Brompton On Swale, United KingdomHQ recorded Oct 9, 2026	51-200	51 contacts →
	Exact match “Hambleton Steel is a forward looking and progressive steelwork fabricator.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
9	Dales Engineering Services LTD	Exact match	Peterhead, United KingdomHQ recorded Oct 9, 2026	51-200	48 contacts →
	Exact match “Since its inception in 1987, Dales Engineering Services Ltd has been providing fabrication, welding and machining solutions to both the onshore and offshore sectors.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
10	QA Weld Tech	Exact match	Middlesbrough, United KingdomHQ recorded Oct 9, 2026	51-200	46 contacts →
	Exact match “QA Weld Tech is an award winning Specialist Welding and Engineering company based in Middlesbrough, UK.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
11	Fascel Group	Exact match	Luton, United KingdomHQ recorded Oct 9, 2026	51-200	43 contacts →
	Exact match “Fascel is known for pipework, plumbing and steelwork fabrication and M&E.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
12	Tissot Industry UK	Exact match	Croydon, United KingdomHQ recorded Oct 9, 2026	51-200	39 contacts →
	Exact match “TISSOT Industrie \| Tailored industrial excellence since 1942.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
13	Berry & Escott Engineering	Exact match	Bridgwater, United KingdomHQ recorded Oct 9, 2026	51-200	34 contacts →
	Exact match “Located in Bridgwater, Somerset, Berry & Escott Engineering pride themselves on quality.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
14	Harper UK	Exact match	Insch, United KingdomHQ recorded Oct 9, 2026	51-200	33 contacts →
	Exact match “Harper UK specialises in structural steelwork and fabrication.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
15	Afab Holdings LTD	Exact match	Aberdeen, United KingdomHQ recorded Oct 9, 2026	51-200	33 contacts →
	Exact match “For over forty years, AFAB Holdings Ltd.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
16	Enco LTD	Exact match	Halifax, United KingdomHQ recorded Oct 9, 2026	11-50	31 contacts →
	Exact match “Founded in 2009, we are a family run business with over 10 years experience in pipework fabrication and engineering expertise.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
17	European Heathyards Engineering Co. Limited	Exact match	Walsall, United KingdomHQ recorded Oct 9, 2026	51-200	26 contacts →
	Exact match “European Heathyards are leaders in tube manipulation, fabrication and high integrity welding and are trusted fabricators of tube, plate & section structures.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
18	Normand & Thomson	Exact match	Dalgety Bay, United KingdomHQ recorded Oct 9, 2026	11-50	26 contacts →
	Exact match “Established in 1905, Normand and Thomson has built an unrivalled reputation for quality and customer service.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
19	LFE Engineering LTD	Exact match	Coventry, United KingdomHQ recorded Oct 9, 2026	11-50	25 contacts →
	Exact match “LFE Engineering is a fabrication and sheet metal company based in Coventry.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
20	Mcquillan Boiler Services LTD	Exact match	Rochdale, United KingdomHQ recorded Oct 9, 2026	51-200	24 contacts →
	Exact match “McQuillan Boiler Services was established in 1989 with the intention of offering our loyal customers reliable support and servicing with both their industrial and commercial steam…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
21	Gray Fabrication Limited	Exact match	Cupar, United KingdomHQ recorded Oct 9, 2026	11-50	21 contacts →
	Exact match “Gray Fabrication is one of the UK's leading Heavy Fabrication companies specialising in the rolling, bending and pressing of heavy plate.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
22	Cook Fabrications Limited	Exact match	Hawkinge, United KingdomHQ recorded Oct 9, 2026	11-50	18 contacts →
	Exact match “Cook Fabrications was founded in 1979 by Eric Cook, who remains at the heart of the business, and has since built up an enviable reputation for expertise, competitiveness and…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
23	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
24	Robert Stevens & Sons LTD	Exact match	Rochford, United KingdomHQ recorded Oct 9, 2026	51-200	17 contacts →
	Exact match “Established in 1944, Robert Stevens & Sons Limited has earned an enviable reputation for quality and professionalism in the design, fabrication and erection of complex steel…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
25	George Green Keighley LTD	Exact match	Keighley, United KingdomHQ recorded Oct 9, 2026	11-50	16 contacts →
	Exact match “Established in 1900 and still a family-run business, George Green has a long and proud history of doing things right.” 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 “boilermaker 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 589 boilermaker contractors based in the United Kingdom

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Boilermaker contractors based in the United Kingdom at a glance

As of Oct 9, 2026

24.5%Verified-email coverage

5.5Average contacts per company

1-10Median size (employees)

2.9%Largest-city concentration · London

Oct 9, 2026Page data refreshed

Companies by employee count

1-10

305

11-50

231

51-200

201-500

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 589 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 “boilermaker 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 795 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 “boilermaker contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many boilermaker contractors are there based in the United Kingdom?

RevenueBase identified 589 company matches for boilermaker 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?

Cavendish Northern Limited tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most boilermaker contractors?

London leads with 17 company records, followed by Hull (10) and Sheffield (8).

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 795 professional contacts with verified work emails tracked across these 589 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.

Ready to reach these companies? Verified emails and direct dials for all 589 boilermaker 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 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.