Company lists · Data refreshed September 2026

Top 25 Biomass heating contractors based in the United Kingdom

Name: Biomass heating contractors based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 668 companies tracked

RevenueBase identified 668 biomass heating contractors headquartered in the United Kingdom as of September 2026 and tracks 5,263 professional contacts across them, including 1,888 with verified work emails. London is the largest hub.

This list covers biomass heating contractors 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 16, 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 16, 2026 86% judged on-target in blind review

668Companies

5,263Contacts tracked

1,888Verified emails

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The 25 largest biomass heating contractors based in the United Kingdom

Ranked by team size

Top 25 of 668 biomass heating contractors based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to biomass heating contractors: 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	BAXI	Partial evidence	Warwick, United KingdomHQ checked Sep 16, 2026	1,001-5,000	850 contacts →
	Partial evidence “We're leading the energy transition to zero carbon, by offering complete residential and commercial heating and hot water solutions.” Source: RevenueBase Database · checked Sep 16, 2026
2	Vital Energi Utilities Limited	Partial evidence	Blackburn, United KingdomHQ checked Sep 16, 2026	501-1,000	709 contacts →
	Partial evidence “Our 30+ years’ experience have involved us in the creation of major UK district heating networks in areas such as Sheffield, Nottingham and London.” Source: RevenueBase Database · checked Sep 16, 2026
3	Swale Heating Part Of Sureserve	Partial evidence	Sittingbourne, United KingdomHQ checked Sep 16, 2026	201-500	136 contacts →
	Partial evidence “As an established heating company based in Kent, Swale Heating are proud to offer expert guidance in choosing the best heating and boiler systems & products available today.” Source: RevenueBase Database · checked Sep 16, 2026
4	Grant Engineering UK LTD	Partial evidence	Swindon, United KingdomHQ checked Sep 16, 2026	51-200	115 contacts →
	Partial evidence “We are a leading supplier of sustainable heating systems, including HVO boilers, air source heat pumps, solar thermal, hot water storage cylinders, aluminium radiators and…” Source: RevenueBase Database · checked Sep 16, 2026
5	Purdy Part Of Sureserve	Indirect evidence	London, United KingdomHQ checked Sep 16, 2026	201-500	85 contacts →
	Indirect evidence “Who are we?” Source: RevenueBase Database · checked Sep 16, 2026
6	Nu-Heat Underfloor Heating & Renewables	Partial evidence	Honiton, United KingdomHQ checked Sep 16, 2026	51-200	70 contacts →
	Partial evidence “As the UK's largest supplier of warm water underfloor heating and integrated renewables, Nu‑Heat delivers fully designed, energy efficient systems to installers, housebuilders…” Source: RevenueBase Database · checked Sep 16, 2026
7	ECO Approach	Indirect evidence	Beckenham, United KingdomHQ checked Sep 16, 2026	51-200	67 contacts →
	Indirect evidence “We’re a leading nationwide property services company established in 2013.” Source: RevenueBase Database · checked Sep 16, 2026
8	PHC Parts	Partial evidence	City Of Bristol, United KingdomHQ checked Sep 16, 2026	51-200	54 contacts →
	Partial evidence “PHC are an established, specialist supplier of parts for domestic and commercial heating, plumbing, air conditioning and refrigeration systems.” Source: RevenueBase Database · checked Sep 16, 2026
9	Vokera By Riello	Partial evidence	Hertfordshire, United KingdomHQ checked Sep 16, 2026	11-50	45 contacts →
	Partial evidence “For over 40 years, Vokèra has been a trusted name in home heating across the UK and Ireland, delivering reliable, energy efficient solutions for domestic and light commercial…” Source: RevenueBase Database · checked Sep 16, 2026
10	Lochinvar, UK	Indirect evidence	Banbury, United KingdomHQ checked Sep 16, 2026	11-50	40 contacts →
	Indirect 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 16, 2026
11	Heatable	Indirect evidence	Warrington, United KingdomHQ checked Sep 16, 2026	11-50	37 contacts →
	Indirect evidence “The UK's trusted boiler, aircon and renewable installers.” Source: RevenueBase Database · checked Sep 16, 2026
12	Land Energy	Partial evidence	Helmsley, United KingdomHQ checked Sep 16, 2026	51-200	34 contacts →
	Partial evidence “Land Energy’s mission is to make high-quality, sustainable, home-grown products for heating, agriculture, gardening and animal care the natural first choice for UK homes and…” Source: RevenueBase Database · checked Sep 16, 2026
13	Homefire	Indirect evidence	Sheffield, United KingdomHQ checked Sep 16, 2026	201-500	32 contacts →
	Indirect evidence “Homefire has been warming British homes for nearly 300 years, starting with Charington’s Coal Depot in 1731.” Source: RevenueBase Database · checked Sep 16, 2026
14	Atag Heating Technology UK Limited	Indirect evidence	Dunfermline, United KingdomHQ checked Sep 16, 2026	51-200	31 contacts →
	Indirect evidence “BUILT TO LAST ATAG truly is a unique company.” Source: RevenueBase Database · checked Sep 16, 2026
15	Thermamech	Partial evidence	Bristol, United KingdomHQ checked Sep 16, 2026	51-200	30 contacts →
	Partial evidence “ThermaMech is one of the UK’s fastest growing businesses within the District Heating Installation market, currently employing around 30 people in the UK.” Source: RevenueBase Database · checked Sep 16, 2026
16	REINA	Indirect evidence	Folkestone, United KingdomHQ checked Sep 16, 2026	51-200	30 contacts →
	Indirect evidence “The Reina Group was founded in 2003 and through our core company values, expertise and impassioned commitment to provide the best renewable, sustainable, viable and efficient…” Source: RevenueBase Database · checked Sep 16, 2026
17	Myriad Heat And Power Products	Indirect evidence	Melton Mowbray, United KingdomHQ checked Sep 16, 2026	11-50	30 contacts →
	Indirect evidence “We know about Low carbon heat and power Award Winning Low Carbon system Design / Installation / Servicing If you have a need save energy cost or carbon, regardless of your…” Source: RevenueBase Database · checked Sep 16, 2026
18	Johnson & Starley LTD	Partial evidence	Northampton, United KingdomHQ checked Sep 16, 2026	51-200	26 contacts →
	Partial evidence “As a market leader in providing energy efficient heating and ventilation solutions, Johnson & Starley has an impressive portfolio of products.” Source: RevenueBase Database · checked Sep 16, 2026
19	SDL Solutions	Partial evidence	Chipping Campden, United KingdomHQ checked Sep 16, 2026	11-50	26 contacts →
	Partial evidence “SDL Solutions offer a 360-degree service in the production and supply of biomass wood fuel around the UK.” Source: RevenueBase Database · checked Sep 16, 2026
20	Green Improve	Partial evidence	Blackburn, United KingdomHQ checked Sep 16, 2026	11-50	24 contacts →
	Partial evidence “At Green Improve, we specialise in providing solutions for renewable heating and insulation installations.” Source: RevenueBase Database · checked Sep 16, 2026
21	Luthmore	Indirect evidence	Chippenham, United KingdomHQ checked Sep 16, 2026	11-50	22 contacts →
	Indirect evidence “The zero emission alternative to the gas combi boiler” Source: RevenueBase Database · checked Sep 16, 2026
22	Thermal Earth Limited	Strong evidence	Ammanford, United KingdomHQ checked Sep 16, 2026	11-50	22 contacts →
	Strong evidence “Thermal Earth is a leading UK distributor of renewable heating technologies incorporating wood biomass boilers, heat pumps and solar thermal systems based in South Wales.” Source: RevenueBase Database · checked Sep 16, 2026
23	Nerg LTD	Indirect evidence	Lincoln, United KingdomHQ checked Sep 16, 2026	11-50	21 contacts →
	Indirect evidence “We are a Midlands based business, that recommends and installs the right equipment to improves your business's profitability and carbon usage.” Source: RevenueBase Database · checked Sep 16, 2026
24	Treco LTD	Indirect evidence	Tiverton, United KingdomHQ checked Sep 16, 2026	11-50	21 contacts →
	Indirect evidence “Who are we?” Source: RevenueBase Database · checked Sep 16, 2026
25	Talbott's Biomass Energy Systems LTD	Partial evidence	Stone, United KingdomHQ checked Sep 16, 2026	11-50	20 contacts →
	Partial evidence “Talbott’s are industry leaders with over 45 years’ experience within the biomass and wood waste to energy market.” Source: RevenueBase Database · checked Sep 16, 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: biomass heating contractors. 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 biomass heating contractors.
Partial evidence: Its own public description names part of biomass heating contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name biomass heating contractors. 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 668 biomass heating contractors based in the United Kingdom

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Biomass heating contractors based in the United Kingdom at a glance

As of Sep 16, 2026

35.9%Verified-email coverage

7.9Average contacts per company

1-10Median size (employees)

3.4%Largest-city concentration · London

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

370

11-50

224

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 668 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 biomass heating contractors, 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 “biomass heating contractors”. 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 biomass heating contractors), 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 biomass heating contractors, 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, 1,888 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 16, 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 biomass heating contractors, 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 biomass heating contractors are there based in the United Kingdom?

RevenueBase identified 668 biomass heating contractors 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?

BAXI, headquartered in Warwick, tops this list with the largest team on record.

Which city has the most biomass heating contractors?

London leads with 23 headquartered companies, followed by Bristol (10) and Leeds (9).

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 1,888 verified decision-maker contacts tracked across these 668 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 16, 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.