Company lists · Data refreshed September 2026

Top 25 Advanced oxidation process providers based in the United Kingdom

Name: Advanced oxidation process providers based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 48 companies tracked

RevenueBase identified 48 advanced oxidation process providers headquartered in the United Kingdom as of September 2026 and tracks 550 professional contacts across them, including 213 with verified work emails. Newry is the largest hub.

This list covers advanced oxidation process providers 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 19, 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 19, 2026 86% judged on-target in blind review

48Companies

550Contacts tracked

213Verified emails

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The 25 largest advanced oxidation process providers based in the United Kingdom

Ranked by team size

Top 25 of 48 advanced oxidation process providers based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to advanced oxidation process providers: 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	Siltbuster LTD	Indirect evidence	Monmouth, United KingdomHQ checked Sep 19, 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 19, 2026
2	Atac Solutions LTD	Indirect evidence	Maidstone, United KingdomHQ checked Sep 19, 2026	11-50	44 contacts →
	Indirect evidence “ATAC Solutions Ltd is a leading UK environmental services company specialising in wastewater services and wastewater equipment on a capital purchase or hire basis.” Source: RevenueBase Database · checked Sep 19, 2026
3	Hydro Industries Limited	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	40 contacts →
	Indirect evidence “Hydro Industries.generating clean water Clean Water is a limited natural resource essential for life and economic growth.” Source: RevenueBase Database · checked Sep 19, 2026
4	Elentec	Indirect evidence	Bethesda, United KingdomHQ checked Sep 19, 2026	11-50	36 contacts →
	Indirect evidence “Elentec develops and supplies electrochemical water treatment systems - together with appropriate separation technology.” Source: RevenueBase Database · checked Sep 19, 2026
5	Arvia Technology	Indirect evidence	Runcorn, United KingdomHQ checked Sep 19, 2026	11-50	32 contacts →
	Indirect evidence “Tertiary water treatment specialist.” Source: RevenueBase Database · checked Sep 19, 2026
6	KEE	Indirect evidence	Aylesbury, United KingdomHQ checked Sep 19, 2026	51-200	21 contacts →
	Indirect evidence “KEE KEE is a globally recognised brand operating within in the industrial, commercial and domestic wastewater treatment industries.” Source: RevenueBase Database · checked Sep 19, 2026
7	Excel Water LTD	Indirect evidence	Castleford, United KingdomHQ checked Sep 19, 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 19, 2026
8	Fin-Tek Ozone	Indirect evidence	Torquay, United KingdomHQ checked Sep 19, 2026	11-50	17 contacts →
	Indirect evidence “Fin-Tek Ozone is an applied ozone and UV engineering firm that operates with office in the US, Taiwan, and Estonia.” Source: RevenueBase Database · checked Sep 19, 2026
9	Te-Tech Process Solutions	Partial evidence	Southampton, United KingdomHQ checked Sep 19, 2026	501-1,000	16 contacts →
	Partial 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 19, 2026
10	Curio Group LTD	Indirect evidence	Milton Keynes, United KingdomHQ checked Sep 19, 2026	11-50	15 contacts →
	Indirect evidence “Brave thinking underlies every part of curio group.” Source: RevenueBase Database · checked Sep 19, 2026
11	Viltra	Indirect evidence	Newry, United KingdomHQ checked Sep 19, 2026	11-50	14 contacts →
	Indirect evidence “Viltra specialises in designing, manufacturing and installing wastewater treatment solutions for a wide range of sectors throughout the UK and Ireland, including domestic…” Source: RevenueBase Database · checked Sep 19, 2026
12	Aquabio LTD	Indirect evidence	Worcester, United KingdomHQ checked Sep 19, 2026	11-50	14 contacts →
	Indirect evidence “Aquabio is a pioneering company born with a passion for innovation combined with a strong ethos for environmental sustainability.” Source: RevenueBase Database · checked Sep 19, 2026
13	Plantwork Systems LTD	Indirect evidence	Alton, United KingdomHQ checked Sep 19, 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 19, 2026
14	Esmil Process Systems	Partial evidence	High Wycombe Bucks, United KingdomHQ checked Sep 19, 2026	1-10	12 contacts →
	Partial evidence “ESMIL Process Systems is an award winning Construction company located in United Kingdom.” Source: RevenueBase Database · checked Sep 19, 2026
15	Water Tecnik LTD	Indirect evidence	Newry, United KingdomHQ checked Sep 19, 2026	11-50	10 contacts →
	Indirect evidence “Water Tecnik specialises in delivering practical, compliant, and cost-effective industrial wastewater and effluent treatment solutions.” Source: RevenueBase Database · checked Sep 19, 2026
16	Puretec Separations	Partial evidence	Ledbury, United KingdomHQ checked Sep 19, 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 19, 2026
17	Sheers Limited	Indirect evidence	Darlington, United KingdomHQ checked Sep 19, 2026	11-50	9 contacts →
	Indirect evidence “Sheers Ltd are an established engineering company based in the North East of England.” Source: RevenueBase Database · checked Sep 19, 2026
18	Emulous Water	Indirect evidence	Wells, United KingdomHQ checked Sep 19, 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 19, 2026
19	Kelly Tanks LTD	Indirect evidence	Stafford, United KingdomHQ checked Sep 19, 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 19, 2026
20	Tech Environment UK LTD	Indirect evidence	Guildford, United KingdomHQ checked Sep 19, 2026	11-50	7 contacts →
	Indirect evidence “Tech Environment UK Co.” Source: RevenueBase Database · checked Sep 19, 2026
21	Hydra Clear Process Water	Indirect evidence	Warrington, United KingdomHQ checked Sep 19, 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 19, 2026
22	Xion Water Technologies	Indirect evidence	Peterborough, United KingdomHQ checked Sep 19, 2026	1-10	4 contacts →
	Indirect evidence “Xion Water Technologies provide a comprehensive range of water treatment solutions and services.” Source: RevenueBase Database · checked Sep 19, 2026
23	Hydroklear Services LTD	Indirect evidence	Kilbirnie, United KingdomHQ checked Sep 19, 2026	11-50	4 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
24	Advanced Water Treatment UK LTD	Partial evidence	Downham Market, United KingdomHQ checked Sep 19, 2026	1-10	4 contacts →
	Partial evidence “ADVANCED WATER TREATMENT is a company based in East Anglia providing water treatment equipment and services to industry.” Source: RevenueBase Database · checked Sep 19, 2026
25	FM Environmental LTD	Indirect evidence	Newry, United KingdomHQ checked Sep 19, 2026	11-50	1 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 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: advanced oxidation process providers. 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 advanced oxidation process providers.
Partial evidence: Its own public description names part of advanced oxidation process providers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name advanced oxidation process providers. 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 48 advanced oxidation process providers based in the United Kingdom

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Advanced oxidation process providers based in the United Kingdom at a glance

As of Sep 19, 2026

38.7%Verified-email coverage

11.5Average contacts per company

11-50Median size (employees)

8.3%Largest-city concentration · Newry

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

501-1,000

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 48 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 advanced oxidation process providers, 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 “advanced oxidation process providers”. 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 advanced oxidation process providers), 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 advanced oxidation process providers, 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, 213 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 19, 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 advanced oxidation process providers, 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 advanced oxidation process providers are there based in the United Kingdom?

RevenueBase identified 48 advanced oxidation process providers 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?

Siltbuster LTD, headquartered in United Kingdom, tops this list with the largest team on record.

Which city has the most advanced oxidation process providers?

Newry leads with 4 headquartered companies, followed by High Wycombe Bucks (2) and Llanelli (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 213 verified decision-maker contacts tracked across these 48 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 19, 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.