Company lists · Data refreshed September 2026

Top 25 Industrial thermal processing companies based in the United Kingdom

Name: Industrial thermal processing companies 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 116 companies tracked

RevenueBase identified 116 industrial thermal processing companies headquartered in the United Kingdom as of September 2026 and tracks 5,207 professional contacts across them, including 1,602 with verified work emails. Sheffield is the largest hub.

This list covers industrial thermal processing companies 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

116Companies

5,207Contacts tracked

1,602Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest industrial thermal processing companies based in the United Kingdom

Ranked by team size

Top 25 of 116 industrial thermal processing companies 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 thermal processing companies: 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	Bodycote	Strong evidence	Macclesfield, United KingdomHQ checked Sep 17, 2026	5,001-10,000	2,940 contacts →
	Strong evidence “With more than 165 locations in 22 countries, Bodycote is the world’s leading provider of heat treatment and specialist thermal processing services.” Source: RevenueBase Database · checked Sep 17, 2026
2	Darchem Engineering	Indirect evidence	Stillington, United KingdomHQ checked Sep 17, 2026	501-1,000	317 contacts →
	Indirect evidence “Darchem Engineering Limited is a world class Engineering Company providing products and services primarily to meet the needs of its customers for engineered solutions to high…” Source: RevenueBase Database · checked Sep 17, 2026
3	Unitbirwelco	Partial evidence	Elba Crescent, United KingdomHQ checked Sep 17, 2026	201-500	117 contacts →
	Partial 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 17, 2026
4	Spooner Industries LTD	Partial evidence	Ilkley, United KingdomHQ checked Sep 17, 2026	51-200	101 contacts →
	Partial evidence “Spooner Industries Limited manufacture industrial process equipment such as industrial ovens, air flotation and dryers, coolers, provers and air pollution abatement equipment for…” Source: RevenueBase Database · checked Sep 17, 2026
5	Boustead International Heaters	Indirect evidence	Burgess Hill, United KingdomHQ checked Sep 17, 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 17, 2026
6	Wallwork Group LTD	Indirect evidence	Bury, United KingdomHQ checked Sep 17, 2026	201-500	74 contacts →
	Indirect evidence “The Wallwork Group specializes in heat treatment, surface engineering, vacuum brazing, vacuum equipment manufacturing, heat-resistant casting, and hot isostatic pressing.” Source: RevenueBase Database · checked Sep 17, 2026
7	SST Technology	Indirect evidence	Eynsham, United KingdomHQ checked Sep 17, 2026	51-200	41 contacts →
	Indirect evidence “PAGE WILL BE CLOSING AT END OF JUNE- PLEASE FOLLOW "POLAR TECHNOLOGY" PAGE TO STAY UP TO-DATE* SST Technology, a sub-brand of Polar Technology, an engineering business based in…” Source: RevenueBase Database · checked Sep 17, 2026
8	Vesuvius Technology	Partial evidence	London, United KingdomHQ checked Sep 17, 2026	n/a	39 contacts →
	Partial evidence “Vesuvius is a global leader in molten metal flow engineering and technology, serving process industries operating in challenging high-temperature conditions.” Source: RevenueBase Database · checked Sep 17, 2026
9	Consarc Engineering LTD	Indirect evidence	Holytown, United KingdomHQ checked Sep 17, 2026	51-200	37 contacts →
	Indirect evidence “CONSARC Engineering Ltd are world leaders in the design, manufacture, installation and commissioning of vacuum and controlled atmosphere furnace equipment.” Source: RevenueBase Database · checked Sep 17, 2026
10	CDS Group	Indirect evidence	Staffordshire, United KingdomHQ checked Sep 17, 2026	11-50	36 contacts →
	Indirect evidence “CDS Group, established in 1983, is widely regarded as the world's leading machinery specialist for drying and curing systems.” Source: RevenueBase Database · checked Sep 17, 2026
11	Thermco Systems Limited	Partial evidence	Washington, United KingdomHQ checked Sep 17, 2026	51-200	31 contacts →
	Partial evidence “Headquartered in Washington, West Sussex, United Kingdom Thermco Systems a Division of Tetreon Technologies, is the world’s most trusted brand name in horizontal diffusion…” Source: RevenueBase Database · checked Sep 17, 2026
12	Therser UK LTD	Partial evidence	Stoke, United KingdomHQ checked Sep 17, 2026	51-200	28 contacts →
	Partial evidence “We provide thermal products and services in all their forms, our management team have over 150 years experience.” Source: RevenueBase Database · checked Sep 17, 2026
13	Vacuum & Atmosphere Services LTD	Indirect evidence	Birmingham, United KingdomHQ checked Sep 17, 2026	11-50	16 contacts →
	Indirect evidence “VAS are the UK’s number 1 provider of products & services for the heat treatment industry.” Source: RevenueBase Database · checked Sep 17, 2026
14	European Thermodynamics Limited	Partial evidence	Kibworth, United KingdomHQ checked Sep 17, 2026	11-50	16 contacts →
	Partial evidence “European Thermodynamics is committed to delivering high integrity thermal solutions through excellence in design and innovation.” Source: RevenueBase Database · checked Sep 17, 2026
15	Cooperheat Equipment LTD	Partial evidence	Southport, United KingdomHQ checked Sep 17, 2026	51-200	15 contacts →
	Partial evidence “We’ve been leading innovators in thermal technology since 1957.” Source: RevenueBase Database · checked Sep 17, 2026
16	Fuel Conservation Services LTD FCS LTD	Indirect evidence	Cannock, United KingdomHQ checked Sep 17, 2026	51-200	15 contacts →
	Indirect evidence “From establishing in the early 1980’s to the present day, FCS has continually been at the forefront of high temperature and refractory solutions.” Source: RevenueBase Database · checked Sep 17, 2026
17	Thermal Hire	Partial evidence	Wigan, United KingdomHQ checked Sep 17, 2026	51-200	15 contacts →
	Partial evidence “Established in 1974, Thermal Hire is one of the UK s leading Heat Treatment engineers, undertaking a range of in house services and on-site projects for customers throughout the…” Source: RevenueBase Database · checked Sep 17, 2026
18	Phoenixtm LTD	Indirect evidence	Earith, United KingdomHQ checked Sep 17, 2026	11-50	14 contacts →
	Indirect evidence “PhoenixTM Ltd - Phoenix Temperature Measurement PhoenixTM Ltd design and manufactures ‘thru-process’ monitoring systems (temperature and optical) for the heat treatment industry.” Source: RevenueBase Database · checked Sep 17, 2026
19	AIC Group Limited	Strong evidence	Armagh, United KingdomHQ checked Sep 17, 2026	11-50	12 contacts →
	Strong evidence “AIC Group designs, manufactures, installs and maintains bespoke thermal treatment and waste to energy systems for a wide range of waste streams, customers and industries across…” Source: RevenueBase Database · checked Sep 17, 2026
20	IMS Insulation	Indirect evidence	Bromborough, United KingdomHQ checked Sep 17, 2026	51-200	12 contacts →
	Indirect evidence “IMS specialise in the manufacture, machining and supply of high temperature insulation materials and components for use throughout industry world-wide.” Source: RevenueBase Database · checked Sep 17, 2026
21	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
22	Airflow Environmental	Partial evidence	Sheffield, United KingdomHQ checked Sep 17, 2026	11-50	10 contacts →
	Partial evidence “Airflow Group \| Global Leaders in Industrial Ovens & Spray Booths.” Source: RevenueBase Database · checked Sep 17, 2026
23	Odyn Brothers	Indirect evidence	Chester, United KingdomHQ checked Sep 17, 2026	51-200	10 contacts →
	Indirect evidence “Providing heat treatment solutions to the pallet industry.” Source: RevenueBase Database · checked Sep 17, 2026
24	Holmach LTD	Strong evidence	Stamford, United KingdomHQ checked Sep 17, 2026	11-50	9 contacts →
	Strong evidence “Holmach Ltd was founded in 1974 as Peter Holland Food Machinery for the provision of processing solutions – mainly in thermal and vegetable processing.” Source: RevenueBase Database · checked Sep 17, 2026
25	Tek-Dry Systems LTD	Partial evidence	Blackburn, United KingdomHQ checked Sep 17, 2026	11-50	9 contacts →
	Partial evidence “Established in 1990, Tek-Dry Systems are a leading global supplier of high quality, bespoke, thermal process equipment.” 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 thermal processing companies. 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 thermal processing companies.
Partial evidence: Its own public description names part of industrial thermal processing companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name industrial thermal processing companies. 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 116 industrial thermal processing companies based in the United Kingdom

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 1,602 reachable decision-makers.

Free signup · no credit card

View the full list →

Industrial thermal processing companies based in the United Kingdom at a glance

As of Sep 17, 2026

30.8%Verified-email coverage

44.9Average contacts per company

11-50Median size (employees)

4.3%Largest-city concentration · Sheffield

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

5,001-10,000

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 116 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 thermal processing companies, 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 thermal processing companies”. 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 thermal processing companies), 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 thermal processing companies, 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, 1,602 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 thermal processing companies, 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 thermal processing companies are there based in the United Kingdom?

RevenueBase identified 116 industrial thermal processing companies 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?

Bodycote, headquartered in Macclesfield, tops this list with the largest team on record.

Which city has the most industrial thermal processing companies?

Sheffield leads with 5 headquartered companies, followed by London (4) and Nottingham (4).

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 1,602 verified decision-maker contacts tracked across these 116 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.

Ready to reach these companies? Verified emails and direct dials for all 116 industrial thermal processing companies based in the United Kingdom. Start with a free account, no credit card.

Download this list →

Related lists

Industrial thermal processing companies by geography

Browse the directory

Browse: Companies home · All United Kingdom lists · All Industrial thermal processing companies lists · New lists

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.