Company lists · Data refreshed September 2026

Top 25 Energy recovery systems integrators based in the United Kingdom

Name: Energy recovery systems integrators based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 51 companies tracked

RevenueBase identified 51 energy recovery systems integrators headquartered in the United Kingdom as of September 2026 and tracks 586 professional contacts across them, including 271 with verified work emails. London is the largest hub.

This list covers energy recovery systems integrators 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 28, 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 28, 2026 86% judged on-target in blind review

51Companies

586Contacts tracked

271Verified emails

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The 25 largest energy recovery systems integrators based in the United Kingdom

Ranked by team size

Top 25 of 51 energy recovery systems integrators based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to energy recovery systems integrators: 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	BMSI	Strong evidence	Maidenhead, United KingdomHQ checked Sep 28, 2026	201-500	218 contacts →
	Strong evidence “BMSI is the UK’s largest & leading Independent systems integrator of Building Energy Management Systems (BEMS).” Source: RevenueBase Database · checked Sep 28, 2026
2	Spirax Sarco UK And Ireland	Indirect evidence	Cheltenham, United KingdomHQ checked Sep 28, 2026	1,001-5,000	92 contacts →
	Indirect evidence “Why are we here?” Source: RevenueBase Database · checked Sep 28, 2026
3	Showersave	Partial evidence	Ballyclare, United KingdomHQ checked Sep 28, 2026	1-10	14 contacts →
	Partial evidence “Showersave is a market-leading WWHRS, offering innovative, affordable solutions to reduce energy consumption and support sustainable showering.” Source: RevenueBase Database · checked Sep 28, 2026
4	Environ	Indirect evidence	New Mills, United KingdomHQ checked Sep 28, 2026	11-50	14 contacts →
	Indirect evidence “Environ is a multi-disciplinary project delivery and fabrication company.” Source: RevenueBase Database · checked Sep 28, 2026
5	LCS Energy LTD	Partial evidence	Kimbolton, United KingdomHQ checked Sep 28, 2026	11-50	12 contacts →
	Partial evidence “At LCS Energy, we support your business with energy efficient solutions, providing you with a sustainable future and reducing your carbon impact on the environment.” Source: RevenueBase Database · checked Sep 28, 2026
6	Ventive Limited	Partial evidence	Kingston Upon Thames, United KingdomHQ checked Sep 28, 2026	1-10	12 contacts →
	Partial evidence “Ventive designs and manufactures naturally intelligent Heating and Ventilation solutions with both heat recovery and comfort cooling.” Source: RevenueBase Database · checked Sep 28, 2026
7	Citech Energy Recovery Solutions UK LTD	Strong evidence	Hessle, United KingdomHQ checked Sep 28, 2026	11-50	11 contacts →
	Strong evidence “CiTECH’s commitment to the oil and gas industry over the past 8 decades has resulted in the design and delivery of over 220 specialised gas turbine heat recovery systems.” Source: RevenueBase Database · checked Sep 28, 2026
8	Thermtech	Strong evidence	Manchester, United KingdomHQ checked Sep 28, 2026	11-50	11 contacts →
	Strong evidence “We design, manufacture and install bespoke industrial waste heat recovery systems with unrivaled technical excellence and through a highly skilled workforce.” Source: RevenueBase Database · checked Sep 28, 2026
9	Spire Renewables	Strong evidence	Caerphilly, United KingdomHQ checked Sep 28, 2026	11-50	10 contacts →
	Strong evidence “Spire Renewables specialises in consulting, specifying, installing and commissioning high quality sustainable heating and energy systems.” Source: RevenueBase Database · checked Sep 28, 2026
10	MSI Works	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	10 contacts →
	Indirect evidence “Unlock the Full Potential of Your Building with MSI Works!” Source: RevenueBase Database · checked Sep 28, 2026
11	IME Group	Indirect evidence	Brentwood, United KingdomHQ checked Sep 28, 2026	11-50	9 contacts →
	Indirect evidence “When something goes wrong on plant you need one call, one team and one answer.” Source: RevenueBase Database · checked Sep 28, 2026
12	Allison Engineering Limited	Partial evidence	Basildon, United KingdomHQ checked Sep 28, 2026	11-50	8 contacts →
	Partial evidence “The UK's hub of innovative solutions for process innovations, renewable energy and energy management.” Source: RevenueBase Database · checked Sep 28, 2026
13	Link Energy Services	Strong evidence	Warwick, United KingdomHQ checked Sep 28, 2026	11-50	6 contacts →
	Strong evidence “Link Energy provide design and implementation of full EnMS (Energy management systems), project management and commissioning.” Source: RevenueBase Database · checked Sep 28, 2026
14	Struthers Energy And Power LTD	Strong evidence	Hull, United KingdomHQ checked Sep 28, 2026	51-200	6 contacts →
	Strong evidence “STRUTHERS ENERGY & POWER LTD – Design, Engineering and Supply of World-Class Energy Recovery Plant Our World Leading Patented design of Circular Waste Heat Recovery Units and…” Source: RevenueBase Database · checked Sep 28, 2026
15	ADM Systems Heat Recovery Ventilation	Strong evidence	Bingley, United KingdomHQ checked Sep 28, 2026	1-10	6 contacts →
	Strong evidence “ADM Systems are one of the few truly independent designers, suppliers, installers and maintainers of heat recovery ventilation systems in the UK and were originally pioneers of…” Source: RevenueBase Database · checked Sep 28, 2026
16	Kers Energy Recovery	Strong evidence	Bolton, United KingdomHQ checked Sep 28, 2026	11-50	5 contacts →
	Strong evidence “At Kers we have been at the heart of Energy recovery technology since 2012, recycling waste heat from commercial and residential properties and converting to cost, low carbon…” Source: RevenueBase Database · checked Sep 28, 2026
17	Rhizome2	Strong evidence	Dartford, United KingdomHQ checked Sep 28, 2026	1-10	5 contacts →
	Strong evidence “RHizome2 is a specialist system integrator, with expertise in green hydrogen production, compression, storage & delivery systems.” Source: RevenueBase Database · checked Sep 28, 2026
18	Dext Heat Recovery	Indirect evidence	Barrowford, United KingdomHQ checked Sep 28, 2026	1-10	4 contacts →
	Indirect evidence “The Dext team came together in 2009 with a combined 30 years’ industry experience.” Source: RevenueBase Database · checked Sep 28, 2026
19	BE Green	Indirect evidence	Uxbridge, United KingdomHQ checked Sep 28, 2026	11-50	4 contacts →
	Indirect evidence “Be Green are specialists renewable technology designers, installers and maintainers.” Source: RevenueBase Database · checked Sep 28, 2026
20	Heatcatcher LTD	Strong evidence	Falmer, United KingdomHQ checked Sep 28, 2026	1-10	3 contacts →
	Strong evidence “Decarbonising heat in manufacturing industries by integrating Waste Heat Recovery (WHR) systems with High Temperature Heat Pumps (HTHP) hot water generators and Organic Rankine…” Source: RevenueBase Database · checked Sep 28, 2026
21	Excalibur Energy LTD	Partial evidence	Swindon, United KingdomHQ checked Sep 28, 2026	1-10	2 contacts →
	Partial evidence “Identifying opportunities for energy efficiency and resilience in air-conditioning, critical cooling and refrigeration is one area where we can make a real difference.” Source: RevenueBase Database · checked Sep 28, 2026
22	Clickvent	Strong evidence	Newry, United KingdomHQ checked Sep 28, 2026	1-10	2 contacts →
	Strong evidence “ClickVent is an Irish renewable energy company, focusing on bespoke heat recovery and mechanical ventilation systems.” Source: RevenueBase Database · checked Sep 28, 2026
23	Energy Intelligent Solutions	Partial evidence	Surrey, United KingdomHQ checked Sep 28, 2026	1-10	2 contacts →
	Partial evidence “Energy Intelligent Solutions for energy and cost reduction solutions.” Source: RevenueBase Database · checked Sep 28, 2026
24	Epic Solutions	Partial evidence	Harrogate, United KingdomHQ checked Sep 28, 2026	1-10	2 contacts →
	Partial evidence “Providing EPC, EPC+ and Retrofit Assessment services measuring and improving the energy efficiency of your property.” Source: RevenueBase Database · checked Sep 28, 2026
25	Biyat Energy & Environment LTD	Partial evidence	Solihull, United KingdomHQ checked Sep 28, 2026	1-10	2 contacts →
	Partial evidence “Biyat Energy & Environment Ltd is an engineering company specializing in turnkey engineering solutions that protect the environment and improve energy efficiency in the industrial…” Source: RevenueBase Database · checked Sep 28, 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: energy recovery systems integrators. 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 energy recovery systems integrators.
Partial evidence: Its own public description names part of energy recovery systems integrators, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name energy recovery systems integrators. 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 51 energy recovery systems integrators based in the United Kingdom

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Energy recovery systems integrators based in the United Kingdom at a glance

As of Sep 28, 2026

46.2%Verified-email coverage

11.5Average contacts per company

1-10Median size (employees)

11.8%Largest-city concentration · London

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

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 51 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 energy recovery systems integrators, 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 “energy recovery systems integrators”. 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 energy recovery systems integrators), 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 energy recovery systems integrators, 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, 271 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 28, 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 energy recovery systems integrators, 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 energy recovery systems integrators are there based in the United Kingdom?

RevenueBase identified 51 energy recovery systems integrators 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?

BMSI, headquartered in White Waltham Maidenhead, tops this list with the largest team on record.

Which city has the most energy recovery systems integrators?

London leads with 6 headquartered companies, followed by Manchester (2) and Ballyclare Ballyclare (1).

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 271 verified decision-maker contacts tracked across these 51 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 28, 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.