Company lists · Data refreshed September 2026

Top 25 Fire boiler manufacturers based in the United Kingdom

Name: Fire boiler manufacturers based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 30, 2026 60 companies tracked

RevenueBase identified 60 fire boiler manufacturers headquartered in the United Kingdom as of September 2026 and tracks 2,865 professional contacts across them, including 517 with verified work emails. London is the largest hub.

This list covers fire boiler manufacturers 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 30, 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 30, 2026 86% judged on-target in blind review

60Companies

2,865Contacts tracked

517Verified emails

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The 25 largest fire boiler manufacturers based in the United Kingdom

Ranked by team size

Top 25 of 60 fire boiler manufacturers based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 30, 2026. RevenueBase Smart Search rates how each company's information relates to fire boiler manufacturers: 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	Spirax Sarco	Indirect evidence	Cheltenham, United KingdomHQ checked Sep 30, 2026	5,001-10,000	1,669 contacts →
	Indirect evidence “Expertise \| Solutions \| Sustainability A FTSE-100 company, Spirax Sarco is the world's leading provider of steam system solutions.” Source: RevenueBase Database · checked Sep 30, 2026
2	Unitbirwelco	Indirect evidence	Elba Crescent, United KingdomHQ checked Sep 30, 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 30, 2026
3	Cochran	Partial evidence	Annan, United KingdomHQ checked Sep 30, 2026	201-500	110 contacts →
	Partial evidence “Cochran has been embedded within industrial boiler manufacturing since 1878.” Source: RevenueBase Database · checked Sep 30, 2026
4	Byworth Boilers Limited	Partial evidence	Keighley, United KingdomHQ checked Sep 30, 2026	51-200	96 contacts →
	Partial evidence “Your industrial boiler is at the heart of your operations.” Source: RevenueBase Database · checked Sep 30, 2026
5	JBC	Partial evidence	Normanton, United KingdomHQ checked Sep 30, 2026	51-200	86 contacts →
	Partial evidence “JBC Industrial Services is the leading name in Industrial Boiler and Burner service, maintenance, and repair.” Source: RevenueBase Database · checked Sep 30, 2026
6	Boustead International Heaters	Indirect evidence	Burgess Hill, United KingdomHQ checked Sep 30, 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 30, 2026
7	Green's	Partial evidence	Wakefield, United KingdomHQ checked Sep 30, 2026	51-200	72 contacts →
	Partial evidence “Green’s is one of Europe’s largest providers of boiler pressure part equipment.” Source: RevenueBase Database · checked Sep 30, 2026
8	Saacke Combustion Services LTD	Indirect evidence	Havant, United KingdomHQ checked Sep 30, 2026	51-200	57 contacts →
	Indirect evidence “SAACKE is your qualified partner when it comes to highly efficient, reliable combustion plants with low emissions.” Source: RevenueBase Database · checked Sep 30, 2026
9	Dunphy Combustion Limited	Strong evidence	Rochdale, United KingdomHQ checked Sep 30, 2026	51-200	53 contacts →
	Strong evidence “Dunphy Combustion Ltd design, manufacture, install and maintain a range of combustion equipment, digital control solutions and turnkey prefabricated, packaged boiler houses.” Source: RevenueBase Database · checked Sep 30, 2026
10	Lochinvar, UK	Strong evidence	Banbury, United KingdomHQ checked Sep 30, 2026	11-50	40 contacts →
	Strong evidence “Lochinvar designs, manufactures and distributes a comprehensive range of high efficiency gas fired water heaters and boilers for commercial and industrial applications.” Source: RevenueBase Database · checked Sep 30, 2026
11	Fulton Boiler Works GB Limited	Strong evidence	Bristol, United KingdomHQ checked Sep 30, 2026	51-200	38 contacts →
	Strong evidence “Fulton Ltd specialises in the design and manufacture of steam, hot water, thermal fluid boilers, packaged plant rooms and skid-mounted systems for industrial, commercial and…” Source: RevenueBase Database · checked Sep 30, 2026
12	Babcock Wanson UK LTD	Partial evidence	Borehamwood, United KingdomHQ checked Sep 30, 2026	51-200	36 contacts →
	Partial evidence “Babcock Wanson offers a complete range of products and services for your boiler house.” Source: RevenueBase Database · checked Sep 30, 2026
13	Comtherm LTD	Partial evidence	Droitwich, United KingdomHQ checked Sep 30, 2026	11-50	19 contacts →
	Partial evidence “Established in 1974, Comtherm Ltd has over forty years of experience in the design, manufacture, installation and commissioning of industrial combustion equipment for the…” Source: RevenueBase Database · checked Sep 30, 2026
14	Mcquillan Boiler Services LTD	Partial evidence	Rochdale, United KingdomHQ checked Sep 30, 2026	51-200	18 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 30, 2026
15	Thorne International Boiler Services LTD	Strong evidence	Wolverhampton, United KingdomHQ checked Sep 30, 2026	11-50	13 contacts →
	Strong evidence “Thorne International Boiler Services Ltd design and build fire tube, waste heat and water tube boilers to suit the project brief.” Source: RevenueBase Database · checked Sep 30, 2026
16	Electric Heating Company	Indirect evidence	Blantyre, United KingdomHQ checked Sep 30, 2026	11-50	12 contacts →
	Indirect evidence “The Electric Heating Company have developed their product portfolio to accommodate almost any Central Heating and Hot Water requirement.” Source: RevenueBase Database · checked Sep 30, 2026
17	Proctor Process Plant LTD	Indirect evidence	Burnley, United KingdomHQ checked Sep 30, 2026	11-50	12 contacts →
	Indirect evidence “Established in 1983, Proctor Process Plant is a family-owned business who operate in a worldwide market, with a proven reputation for providing our customers with the highest…” Source: RevenueBase Database · checked Sep 30, 2026
18	Global Combustion Systems	Partial evidence	Livingston, United KingdomHQ checked Sep 30, 2026	11-50	11 contacts →
	Partial evidence “Global Combustion Systems specialise in the design, manufacture and supply of industrial gas, oxygen and fuel oil combustion systems which are used in the glass melting, steel…” Source: RevenueBase Database · checked Sep 30, 2026
19	Ranheat Engineering Limited	Strong evidence	Northamptonshire, United KingdomHQ checked Sep 30, 2026	11-50	8 contacts →
	Strong evidence “Ranheat design, manufacture and install a complete range of industrial wood waste burners and boilers systems.” Source: RevenueBase Database · checked Sep 30, 2026
20	Industrial Boiler Services UK LTD	Partial evidence	Gt Whelnetham, United KingdomHQ checked Sep 30, 2026	11-50	6 contacts →
	Partial evidence “Here at Industrial Boiler Services (UK) Ltd we provide a comprehensive range of services encompassing temporary hire solutions, installation, operational support, maintenance and…” Source: RevenueBase Database · checked Sep 30, 2026
21	Clayton Thermal Products LTD	Indirect evidence	Runcorn, United KingdomHQ checked Sep 30, 2026	11-50	6 contacts →
	Indirect evidence “Clayton Steam System Solutions is an international group with a reputation for technological advance and innovation.” Source: RevenueBase Database · checked Sep 30, 2026
22	Hodgkinson Bennis Limited	Indirect evidence	Manchester, United KingdomHQ checked Sep 30, 2026	11-50	5 contacts →
	Indirect evidence “In a world increasingly conscious of fossil fuels' environmental impact, the imperative to transition towards cleaner, sustainable energy sources has never been more pressing.” Source: RevenueBase Database · checked Sep 30, 2026
23	TEI Limited	Partial evidence	Wakefield, United KingdomHQ checked Sep 30, 2026	201-500	5 contacts →
	Partial evidence “TEi Limited is a leading organisation in the United Kingdom specialising in the manufacture, installation and repair & maintenance of high-pressure steam raising plant and…” Source: RevenueBase Database · checked Sep 30, 2026
24	CFB Boilers LTD	Strong evidence	Clacton On Sea, United KingdomHQ checked Sep 30, 2026	51-200	4 contacts →
	Strong evidence “CFB Boilers Ltd are a leading British manufacturer of advanced steam and hot water boilers for the industrial and commercial sectors.” Source: RevenueBase Database · checked Sep 30, 2026
25	Flair Handling Systems LTD	Partial evidence	Birstall, United KingdomHQ checked Sep 30, 2026	11-50	3 contacts →
	Partial evidence “With over twenty years of manufacturing experience we currently supply an ever widening range of air handling equipment and packaged boiler & tank rooms to the UK mechanical…” Source: RevenueBase Database · checked Sep 30, 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: fire boiler manufacturers. 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 fire boiler manufacturers.
Partial evidence: Its own public description names part of fire boiler manufacturers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name fire boiler manufacturers. 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 60 fire boiler manufacturers based in the United Kingdom

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Fire boiler manufacturers based in the United Kingdom at a glance

As of Sep 30, 2026

18.0%Verified-email coverage

47.8Average contacts per company

11-50Median size (employees)

5.0%Largest-city concentration · London

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

5,001-10,000

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 60 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 fire boiler manufacturers, 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 “fire boiler manufacturers”. 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 fire boiler manufacturers), 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 fire boiler manufacturers, 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, 517 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 30, 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 fire boiler manufacturers, 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 fire boiler manufacturers are there based in the United Kingdom?

RevenueBase identified 60 fire boiler manufacturers 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?

Spirax Sarco, headquartered in Cheltenham, tops this list with the largest team on record.

Which city has the most fire boiler manufacturers?

London leads with 3 headquartered companies, followed by Wakefield (3) and Annan (2).

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 517 verified decision-maker contacts tracked across these 60 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 30, 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.