Company lists · Data refreshed September 2026

Top 25 Membrane filtration plant builders based in the United Kingdom

Name: Membrane filtration plant builders based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 89 companies tracked

RevenueBase identified 89 membrane filtration plant builders headquartered in the United Kingdom as of September 2026 and tracks 1,236 professional contacts across them, including 449 with verified work emails. London is the largest hub.

This list covers membrane filtration plant builders 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 20, 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 20, 2026 86% judged on-target in blind review

89Companies

1,236Contacts tracked

449Verified emails

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

The 25 largest membrane filtration plant builders based in the United Kingdom

Ranked by team size

Top 25 of 89 membrane filtration plant builders based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to membrane filtration plant builders: 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	Severn Trent Services	Indirect evidence	Coventry, United KingdomHQ checked Sep 20, 2026	1,001-5,000	137 contacts →
	Indirect evidence “Severn Trent Services offer a range of services to municipal and industrial clients, including the Ministry of Defence and the Coal Authority, for design, build and operation of…” Source: RevenueBase Database · checked Sep 20, 2026
2	Enpure	Indirect evidence	Birmingham, United KingdomHQ checked Sep 20, 2026	51-200	113 contacts →
	Indirect evidence “Enpure is a process engineering company specializing in water, wastewater and sludge treatment as well as waste-to-energy solutions with a global presence.” Source: RevenueBase Database · checked Sep 20, 2026
3	Salt Separation Services Limited	Indirect evidence	Rochdale, United KingdomHQ checked Sep 20, 2026	51-200	80 contacts →
	Indirect evidence “Salt Separation Services Limited is an independent water treatment company specialising in the design, manufacture, installation and commissioning of water treatment systems.” Source: RevenueBase Database · checked Sep 20, 2026
4	Envirogen Group	Partial evidence	Alfreton, United KingdomHQ checked Sep 20, 2026	201-500	75 contacts →
	Partial evidence “Envirogen Group is a global leader in industrial water treatment and process filtration solutions.” Source: RevenueBase Database · checked Sep 20, 2026
5	Siltbuster LTD	Indirect evidence	Monmouth, United KingdomHQ checked Sep 20, 2026	51-200	75 contacts →
	Indirect evidence “At Siltbuster Ltd, we operate the UK’s largest rental fleet of water treatment systems, setting the industry benchmark for rapid, reliable, and cost-effective solutions.” Source: RevenueBase Database · checked Sep 20, 2026
6	Hydrotec Water Treatment Specialists	Indirect evidence	High Wycombe, United KingdomHQ checked Sep 20, 2026	51-200	50 contacts →
	Indirect evidence “Hydrotec is the UK’s leading company in the design and manufacture of water treatment products for the building services industry.” Source: RevenueBase Database · checked Sep 20, 2026
7	Billi UK	Indirect evidence	Wolverhampton, United KingdomHQ checked Sep 20, 2026	51-200	40 contacts →
	Indirect evidence “At Billi, we design and manufacture a range of energy efficient filtered water systems that offer our customers the very best in innovation, superior performance and reliability.” Source: RevenueBase Database · checked Sep 20, 2026
8	Axium Process LTD	Strong evidence	Hendy, United KingdomHQ checked Sep 20, 2026	51-200	36 contacts →
	Strong evidence “Axium Process is a ‘one stop’ engineering house providing customised solutions to meet your individual requirements be it for a membrane filtration system to treat your effluent…” Source: RevenueBase Database · checked Sep 20, 2026
9	Lubron UK	Indirect evidence	Colchester, United KingdomHQ checked Sep 20, 2026	51-200	26 contacts →
	Indirect evidence “Lubron Water Technology UK is part of the European Market leading water treatment provider, Lubron Group, which has subsidiaries in the Netherlands, Germany and Belgium.” Source: RevenueBase Database · checked Sep 20, 2026
10	Excel Water LTD	Indirect evidence	Castleford, United KingdomHQ checked Sep 20, 2026	11-50	21 contacts →
	Indirect evidence “At Excel Water, we pride ourselves on our unwavering commitment to delivering exceptional water treatment and purification solutions tailored to the diverse needs of our clients.” Source: RevenueBase Database · checked Sep 20, 2026
11	Te-Tech Process Solutions	Indirect evidence	Southampton, United KingdomHQ checked Sep 20, 2026	501-1,000	16 contacts →
	Indirect evidence “Te-Tech Process Solutions Ltd has been established to provide a dedicated service to existing and new clients in the municipal water, industrial and commercial sectors.” Source: RevenueBase Database · checked Sep 20, 2026
12	Plantwork Systems LTD	Indirect evidence	Alton, United KingdomHQ checked Sep 20, 2026	11-50	13 contacts →
	Indirect evidence “Plantwork Systems Ltd (PWS) provides water and wastewater treatment solutions with a strong focus on sustainability, innovation and cost efficiency.” Source: RevenueBase Database · checked Sep 20, 2026
13	Gfsa Limited	Partial evidence	Stourbridge, United KingdomHQ checked Sep 20, 2026	11-50	12 contacts →
	Partial evidence “History GFSA Ltd began trading as Goodtech Betex Filtration Ltd in 1997 and was part of the Goodtech Group of companies and in 1998 changed its name to Goodtech FSA Ltd.” Source: RevenueBase Database · checked Sep 20, 2026
14	Esmil Process Systems	Indirect evidence	High Wycombe Bucks, United KingdomHQ checked Sep 20, 2026	1-10	12 contacts →
	Indirect evidence “ESMIL Process Systems is an award winning Construction company located in United Kingdom.” Source: RevenueBase Database · checked Sep 20, 2026
15	Adept Pure Water LTD	Partial evidence	Wellingborough, United KingdomHQ checked Sep 20, 2026	11-50	11 contacts →
	Partial evidence “ADEPT Pure Water Limited are specialists in the design, manufacture, commission, installation and Service of Water Purification and Treatment Plant and equipment.” Source: RevenueBase Database · checked Sep 20, 2026
16	Wycombe Water	Indirect evidence	Aylesbury, United KingdomHQ checked Sep 20, 2026	11-50	10 contacts →
	Indirect evidence “Wycombe Water Ltd.” Source: RevenueBase Database · checked Sep 20, 2026
17	Puretec Separations	Indirect evidence	Ledbury, United KingdomHQ checked Sep 20, 2026	11-50	9 contacts →
	Indirect evidence “PureTec Separations is a leader in technologies and customer experience within the water treatment and product processing industries.” Source: RevenueBase Database · checked Sep 20, 2026
18	Emulous Water	Indirect evidence	Wells, United KingdomHQ checked Sep 20, 2026	11-50	8 contacts →
	Indirect evidence “We are expert design & build engineers in ultrafiltration, nanofiltration, UV-C and AOP water treatment, purification, and sanitisation systems integration, specialist maintenance…” Source: RevenueBase Database · checked Sep 20, 2026
19	Kelly Tanks LTD	Indirect evidence	Stafford, United KingdomHQ checked Sep 20, 2026	1-10	8 contacts →
	Indirect evidence “At Kelly Tanks, we specialise in delivering simple, innovative, and cost-effective water treatment solutions that protect our shared environment.” Source: RevenueBase Database · checked Sep 20, 2026
20	Tech Environment UK LTD	Indirect evidence	Guildford, United KingdomHQ checked Sep 20, 2026	11-50	7 contacts →
	Indirect evidence “Tech Environment UK Co.” Source: RevenueBase Database · checked Sep 20, 2026
21	Modern Water	Partial evidence	York, United KingdomHQ checked Sep 20, 2026	11-50	7 contacts →
	Partial evidence “Modern Water is a pioneering and innovative technology company, specialising in membrane water treatment solutions and advanced monitoring products.” Source: RevenueBase Database · checked Sep 20, 2026
22	Primary Water Group	Indirect evidence	Cadishead Manchester, United KingdomHQ checked Sep 20, 2026	11-50	6 contacts →
	Indirect evidence “Established in 2006, Primary Water Group operates nationally from offices based in Manchester.” Source: RevenueBase Database · checked Sep 20, 2026
23	Hydra Clear Process Water	Indirect evidence	Warrington, United KingdomHQ checked Sep 20, 2026	1-10	5 contacts →
	Indirect evidence “Hydra-Clear is an innovative engineering group focused around building bespoke Water Treatment Solutions for the UK’s leading brands.” Source: RevenueBase Database · checked Sep 20, 2026
24	Resin Products LTD	Partial evidence	Lichfield, United KingdomHQ checked Sep 20, 2026	1-10	5 contacts →
	Partial evidence “Resin Products Limited is a leading supplier of high-quality ion exchange resins, RO membrane systems & products.” Source: RevenueBase Database · checked Sep 20, 2026
25	Cadar Limited	Indirect evidence	Market Harborough, United KingdomHQ checked Sep 20, 2026	1-10	5 contacts →
	Indirect evidence “CADAR LIMITED is a mechanical or industrial engineering company based out of Rockingham Rd, Market Harborough, LEICESTERSHIRE, United Kingdom.” Source: RevenueBase Database · checked Sep 20, 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: membrane filtration plant builders. 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 membrane filtration plant builders.
Partial evidence: Its own public description names part of membrane filtration plant builders, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name membrane filtration plant builders. 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 89 membrane filtration plant builders based in the United Kingdom

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 449 reachable decision-makers.

Free signup · no credit card

View the full list →

Membrane filtration plant builders based in the United Kingdom at a glance

As of Sep 20, 2026

36.3%Verified-email coverage

13.9Average contacts per company

11-50Median size (employees)

7.9%Largest-city concentration · London

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

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 89 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 membrane filtration plant builders, 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 “membrane filtration plant builders”. 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 membrane filtration plant builders), 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 membrane filtration plant builders, 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, 449 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 20, 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 membrane filtration plant builders, 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 membrane filtration plant builders are there based in the United Kingdom?

RevenueBase identified 89 membrane filtration plant builders 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?

Severn Trent Services, headquartered in Coventry, tops this list with the largest team on record.

Which city has the most membrane filtration plant builders?

London leads with 7 headquartered companies, followed by Southampton (3) and Cadishead Manchester (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 449 verified decision-maker contacts tracked across these 89 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 20, 2026.

Ready to reach these companies? Verified emails and direct dials for all 89 membrane filtration plant builders based in the United Kingdom. Start with a free account, no credit card.

Download this list →

Related lists

Membrane filtration plant builders by geography

Browse the directory

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.