Company lists · Data refreshed September 2026

Top 25 Industrial boiler manufacturers based in the United Kingdom

Name: Industrial 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 17, 2026 103 companies tracked

RevenueBase identified 103 industrial boiler manufacturers headquartered in the United Kingdom as of September 2026 and tracks 2,899 professional contacts across them, including 531 with verified work emails. London is the largest hub.

This list covers industrial 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 17, 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 17, 2026 86% judged on-target in blind review

103Companies

2,899Contacts tracked

531Verified emails

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The 25 largest industrial boiler manufacturers based in the United Kingdom

Ranked by team size

Top 25 of 103 industrial boiler manufacturers based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to industrial 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 17, 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 17, 2026
2	Cochran	Strong evidence	Annan, United KingdomHQ checked Sep 17, 2026	201-500	110 contacts →
	Strong evidence “Cochran has been embedded within industrial boiler manufacturing since 1878.” Source: RevenueBase Database · checked Sep 17, 2026
3	Byworth Boilers Limited	Strong evidence	Keighley, United KingdomHQ checked Sep 17, 2026	51-200	96 contacts →
	Strong evidence “Your industrial boiler is at the heart of your operations.” Source: RevenueBase Database · checked Sep 17, 2026
4	JBC	Strong evidence	Normanton, United KingdomHQ checked Sep 17, 2026	51-200	86 contacts →
	Strong evidence “JBC Industrial Services is the leading name in Industrial Boiler and Burner service, maintenance, and repair.” Source: RevenueBase Database · checked Sep 17, 2026
5	Green's	Partial evidence	Wakefield, United KingdomHQ checked Sep 17, 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 17, 2026
6	Intergas Heating LTD	Strong evidence	Kidderminster, United KingdomHQ checked Sep 17, 2026	201-500	61 contacts →
	Strong evidence “We’re Dutch, we manufacture ultra-efficient domestic boilers and we want to make the world a better place for all of us.” Source: RevenueBase Database · checked Sep 17, 2026
7	James Ramsay	Indirect evidence	Glasgow, United KingdomHQ checked Sep 17, 2026	51-200	54 contacts →
	Indirect evidence “Heating - Pipework - Process - Maintenance.” Source: RevenueBase Database · checked Sep 17, 2026
8	Dunphy Combustion Limited	Strong evidence	Rochdale, United KingdomHQ checked Sep 17, 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 17, 2026
9	Lochinvar, UK	Strong evidence	Banbury, United KingdomHQ checked Sep 17, 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 17, 2026
10	Fulton Boiler Works GB Limited	Strong evidence	Bristol, United KingdomHQ checked Sep 17, 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 17, 2026
11	Tissot Industry UK	Partial evidence	Croydon, United KingdomHQ checked Sep 17, 2026	51-200	38 contacts →
	Partial evidence “TISSOT Industrie \| Tailored industrial excellence since 1942.” Source: RevenueBase Database · checked Sep 17, 2026
12	Babcock Wanson UK LTD	Partial evidence	Borehamwood, United KingdomHQ checked Sep 17, 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 17, 2026
13	Heating Trade Supplies	Partial evidence	Newcastle Upon Tyne, United KingdomHQ checked Sep 17, 2026	51-200	28 contacts →
	Partial evidence “At HTS Group our main objective is to help boiler maintenance companies generate savings on the boiler spare parts expenditure.” Source: RevenueBase Database · checked Sep 17, 2026
14	Geoff Castles Boiler Services Limited	Partial evidence	Carrickfergus, United KingdomHQ checked Sep 17, 2026	51-200	19 contacts →
	Partial evidence “We offer a complete service from the supply, delivery, offloading and installation of a boiler to the ongoing maintenance with 24 hour breakdown cover.” Source: RevenueBase Database · checked Sep 17, 2026
15	Mcquillan Boiler Services LTD	Strong evidence	Rochdale, United KingdomHQ checked Sep 17, 2026	51-200	18 contacts →
	Strong 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 17, 2026
16	Thorne International Boiler Services LTD	Partial evidence	Wolverhampton, United KingdomHQ checked Sep 17, 2026	11-50	13 contacts →
	Partial 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 17, 2026
17	Electric Heating Company	Indirect evidence	Blantyre, United KingdomHQ checked Sep 17, 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 17, 2026
18	Steam Plant Engineering	Partial evidence	Halesowen, United KingdomHQ checked Sep 17, 2026	11-50	12 contacts →
	Partial evidence “Steam Plant Engineering Ltd are independent steam specialists offering; boiler repair, installation, troubleshooting and inspection offering solutions for everything from a…” Source: RevenueBase Database · checked Sep 17, 2026
19	Proctor Process Plant LTD	Indirect evidence	Burnley, United KingdomHQ checked Sep 17, 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 17, 2026
20	Certuss UK	Partial evidence	Birmingham, United KingdomHQ checked Sep 17, 2026	11-50	9 contacts →
	Partial evidence “When Hans-Joachim Schröder founded his company, CERTUSS Wärmetechnik GmbH, in 1957, his primary goals were to manufacture reliable, low-noise steam generators, easy to maintain…” Source: RevenueBase Database · checked Sep 17, 2026
21	Industrial Boilerhouse Supplies LTD	Strong evidence	Fareham, United KingdomHQ checked Sep 17, 2026	11-50	9 contacts →
	Strong evidence “Formed in 1993, Industrial Boilerhouse Supplies Ltd.” Source: RevenueBase Database · checked Sep 17, 2026
22	Flomar LTD	Indirect evidence	Fleckney, United KingdomHQ checked Sep 17, 2026	11-50	9 contacts →
	Indirect evidence “Founded in 1982, Flomar Ltd was created to meet the demand for knowledge in steam production.” Source: RevenueBase Database · checked Sep 17, 2026
23	Ranheat Engineering Limited	Strong evidence	Northamptonshire, United KingdomHQ checked Sep 17, 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 17, 2026
24	Cowley Group	Indirect evidence	Redhill, United KingdomHQ checked Sep 17, 2026	11-50	7 contacts →
	Indirect evidence “We are pleased to celebrate over 80 years of successful trading and our reputation has been built on quality, strong values and dependability.” Source: RevenueBase Database · checked Sep 17, 2026
25	Chws LTD	Partial evidence	Weston-Super-Mare, United KingdomHQ checked Sep 17, 2026	1-10	7 contacts →
	Partial evidence “CHWS Ltd are a supplier of high quality commercial and industrial hot water generators, storage vessels and plate heat exchangers” Source: RevenueBase Database · checked Sep 17, 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: industrial 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 industrial boiler manufacturers.
Partial evidence: Its own public description names part of industrial boiler manufacturers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name industrial 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 103 industrial boiler manufacturers based in the United Kingdom

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Industrial boiler manufacturers based in the United Kingdom at a glance

As of Sep 17, 2026

18.3%Verified-email coverage

28.1Average contacts per company

11-50Median size (employees)

3.9%Largest-city concentration · London

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

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 103 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 industrial 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 “industrial 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 industrial 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 industrial 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, 531 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 17, 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 industrial 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 industrial boiler manufacturers are there based in the United Kingdom?

RevenueBase identified 103 industrial 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 industrial boiler manufacturers?

London leads with 4 headquartered companies, followed by Rochdale (3) and Stoke-On-Trent (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 531 verified decision-maker contacts tracked across these 103 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 17, 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.