Company lists · Data refreshed September 2026

Top 25 Membrane separation manufacturers based in the United Kingdom

Name: Membrane separation 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 30, 2026 51 companies tracked

RevenueBase identified 51 membrane separation manufacturers headquartered in the United Kingdom as of September 2026 and tracks 544 professional contacts across them, including 276 with verified work emails. London is the largest hub.

This list covers membrane separation 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 30, 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 30, 2026 86% judged on-target in blind review

51Companies

544Contacts tracked

276Verified emails

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The 25 largest membrane separation manufacturers based in the United Kingdom

Ranked by team size

Top 25 of 51 membrane separation manufacturers based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 30, 2026. RevenueBase Smart Search rates how each company's information relates to membrane separation 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	Walker Filtration Limited	Partial evidence	Washington, United KingdomHQ checked Sep 30, 2026	201-500	94 contacts →
	Partial evidence “Walker Filtration designs, develops and manufactures a comprehensive range of high quality Compressed Air and Gas Filtration and Drying solutions for a wide range of industrial…” Source: RevenueBase Database · checked Sep 30, 2026
2	Salt Separation Services Limited	Strong evidence	Rochdale, United KingdomHQ checked Sep 30, 2026	51-200	80 contacts →
	Strong 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 30, 2026
3	Envirogen Group	Indirect evidence	Alfreton, United KingdomHQ checked Sep 30, 2026	201-500	75 contacts →
	Indirect evidence “Envirogen Group is a global leader in industrial water treatment and process filtration solutions.” Source: RevenueBase Database · checked Sep 30, 2026
4	Fileder Filter Systems	Indirect evidence	Maidstone, United KingdomHQ checked Sep 30, 2026	51-200	53 contacts →
	Indirect evidence “In short, we’re 'easy to deal with'.” Source: RevenueBase Database · checked Sep 30, 2026
5	Whitefox	Indirect evidence	London, United KingdomHQ checked Sep 30, 2026	11-50	42 contacts →
	Indirect evidence “Whitefox Technologies: Pioneering towards a net zero future through purpose-driven biofuel engineering innovation.” Source: RevenueBase Database · checked Sep 30, 2026
6	Axium Process LTD	Partial evidence	Hendy, United KingdomHQ checked Sep 30, 2026	51-200	36 contacts →
	Partial 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 30, 2026
7	Kapwell LTD	Indirect evidence	Aberdeen, United KingdomHQ checked Sep 30, 2026	11-50	13 contacts →
	Indirect evidence “Kapwell Ltd High-performance separators, engineering solutions.” Source: RevenueBase Database · checked Sep 30, 2026
8	Gfsa Limited	Indirect evidence	Stourbridge, United KingdomHQ checked Sep 30, 2026	11-50	12 contacts →
	Indirect 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 30, 2026
9	Porvair PLC	Indirect evidence	King's Lynn, United KingdomHQ checked Sep 30, 2026	1,001-5,000	11 contacts →
	Indirect evidence “Porvair is a group of specialist filtration, laboratory and environmental technology companies.” Source: RevenueBase Database · checked Sep 30, 2026
10	Puretec Separations	Partial evidence	Ledbury, United KingdomHQ checked Sep 30, 2026	11-50	9 contacts →
	Partial evidence “PureTec Separations is a leader in technologies and customer experience within the water treatment and product processing industries.” Source: RevenueBase Database · checked Sep 30, 2026
11	Molymem LTD	Strong evidence	Manchester, United KingdomHQ checked Sep 30, 2026	1-10	9 contacts →
	Strong evidence “Molymem Ltd is a University of Manchester spin-out commercialising technology to improve existing filtration membranes for separation applications in a wide range of markets…” Source: RevenueBase Database · checked Sep 30, 2026
12	Rosedale Products Europe Limited	Indirect evidence	Wakefield, United KingdomHQ checked Sep 30, 2026	1-10	8 contacts →
	Indirect evidence “Rosedale Products, Inc.” Source: RevenueBase Database · checked Sep 30, 2026
13	Modern Water	Partial evidence	York, United KingdomHQ checked Sep 30, 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 30, 2026
14	Siga Filtration	Indirect evidence	Farnborough, United KingdomHQ checked Sep 30, 2026	1-10	6 contacts →
	Indirect evidence “We solve filtration problems in the process, food, beverage and pharmaceutical industry.” Source: RevenueBase Database · checked Sep 30, 2026
15	Dosafil Limited	Partial evidence	Liverpool, United KingdomHQ checked Sep 30, 2026	1-10	5 contacts →
	Partial evidence “DosaFil Limited manufacturer of the new ground breaking patented DosaFil-Duo range of closed system side-stream filtration and treatment systems.” Source: RevenueBase Database · checked Sep 30, 2026
16	Resin Products LTD	Partial evidence	Lichfield, United KingdomHQ checked Sep 30, 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 30, 2026
17	Hydrasyst	Partial evidence	Paddington, United KingdomHQ checked Sep 30, 2026	11-50	4 contacts →
	Partial evidence “The Hydrasyst Group specializes in advanced and modern membrane filtration technology for a range of high demanding commercial and industrial fluid purification applications.” Source: RevenueBase Database · checked Sep 30, 2026
18	European Filter Solutions LTD	Partial evidence	Rotherham, United KingdomHQ checked Sep 30, 2026	1-10	4 contacts →
	Partial evidence “European Filter Solutions Ltd provides advanced Filtration and Separation Solutions, for a diverse range of filtration disciplines and Industries in the UK and Overseas.” Source: RevenueBase Database · checked Sep 30, 2026
19	DHMO	Indirect evidence	Aberdeen, United KingdomHQ checked Sep 30, 2026	1-10	4 contacts →
	Indirect evidence “Liquid Treatment challenges call for bespoke solutions, implemented by experts.” Source: RevenueBase Database · checked Sep 30, 2026
20	Siebec UK LTD	Indirect evidence	Stafford, United KingdomHQ checked Sep 30, 2026	1-10	4 contacts →
	Indirect evidence “Siebec UK offer a comprehensive range of high-quality products for micro filtration, solution transfer and waste treatment of metal working fluids and surface treatment chemicals.” Source: RevenueBase Database · checked Sep 30, 2026
21	Xtract Filtration Systems Limited	Partial evidence	Stoke-on-trent, United KingdomHQ checked Sep 30, 2026	11-50	3 contacts →
	Partial evidence “XTRACT SOLIDS FROM LIQUID - XTRACT LIQUID FROM SOLIDS - XTRACT PROFIT FROM LOSS Xtract Filtration Systems specialises in the design, manufacture, installation and commissioning of…” Source: RevenueBase Database · checked Sep 30, 2026
22	Microtech Ceramics Limited	Partial evidence	Tonbridge, United KingdomHQ checked Sep 30, 2026	1-10	3 contacts →
	Partial evidence “Microtech Ceramics has developed and patented an innovative, low-cost process for manufacturing ceramic membranes with market-leading porosity and flux.” Source: RevenueBase Database · checked Sep 30, 2026
23	Latham International Limited	Indirect evidence	Chesterton, United KingdomHQ checked Sep 30, 2026	1-10	2 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 30, 2026
24	Prestige Water Equipment LTD	Partial evidence	Harworth, United KingdomHQ checked Sep 30, 2026	1-10	1 contacts →
	Partial evidence “PRESTIGE WATER EQUIPMENT LTD has over 40 years experience in the design, manufacture and installation of bespoke industrial water treatment and filtration equipment.” Source: RevenueBase Database · checked Sep 30, 2026
25	Porvair Filtration Limited	Indirect evidence	King's Lynn, United KingdomHQ checked Sep 30, 2026	1-10	1 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 30, 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 separation 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 membrane separation manufacturers.
Partial evidence: Its own public description names part of membrane separation manufacturers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name membrane separation 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 51 membrane separation manufacturers based in the United Kingdom

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Membrane separation manufacturers based in the United Kingdom at a glance

As of Sep 30, 2026

50.7%Verified-email coverage

10.7Average contacts per company

1-10Median size (employees)

17.6%Largest-city concentration · London

Sep 30, 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 membrane separation 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 “membrane separation 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 membrane separation 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 membrane separation 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, 276 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 30, 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 separation 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 membrane separation manufacturers are there based in the United Kingdom?

RevenueBase identified 51 membrane separation 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?

Walker Filtration Limited, headquartered in Washington, tops this list with the largest team on record.

Which city has the most membrane separation manufacturers?

London leads with 9 headquartered companies, followed by Kings Lynn (3) and Aberdeen (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 276 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 30, 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.