Company lists · Data refreshed September 2026

Top 25 Groundwater consulting firms based in the United Kingdom

Name: Groundwater consulting firms 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 160 companies tracked

RevenueBase identified 160 groundwater consulting firms headquartered in the United Kingdom as of September 2026 and tracks 1,886 professional contacts across them, including 896 with verified work emails. London is the largest hub.

This list covers groundwater consulting firms 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

160Companies

1,886Contacts tracked

896Verified emails

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The 25 largest groundwater consulting firms based in the United Kingdom

Ranked by team size

Top 25 of 160 groundwater consulting firms 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 groundwater consulting firms: 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	Binnies	Indirect evidence	Redhill, United KingdomHQ checked Sep 28, 2026	501-1,000	842 contacts →
	Indirect evidence “Together with our strategic partners, we can address everything from supporting vulnerable customers, water quality, asset performance and leak detection, to integrated planning…” Source: RevenueBase Database · checked Sep 28, 2026
2	WJ UK	Partial evidence	Kings Langley, United KingdomHQ checked Sep 28, 2026	51-200	65 contacts →
	Partial evidence “Part of the WJ Group, WJ UK offer a complete groundwater control and management service, which encompasses design, installation and maintenance programmes to businesses throughout…” Source: RevenueBase Database · checked Sep 28, 2026
3	Waterco Datrys	Indirect evidence	Ruthin, United KingdomHQ checked Sep 28, 2026	11-50	59 contacts →
	Indirect evidence “Waterco Datrys is a leading consultancy in water and environmental engineering, formed through the merger of Waterco and Datrys in 2024.” Source: RevenueBase Database · checked Sep 28, 2026
4	OIL Plus LTD	Indirect evidence	Newbury, United KingdomHQ checked Sep 28, 2026	11-50	36 contacts →
	Indirect evidence “As a world-leading independent consultancy in oil and gas field water management, our team provides on-site fluid sampling, laboratory analysis, specialty monitoring equipment for…” Source: RevenueBase Database · checked Sep 28, 2026
5	Geotechnical Consulting Group	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	29 contacts →
	Partial evidence “Geotechnical Consulting Group (GCG) is one of the world’s leading independent geotechnical engineering consultancies, recognised for delivering innovative, research driven…” Source: RevenueBase Database · checked Sep 28, 2026
6	Aegaea Limited	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	28 contacts →
	Indirect evidence “Aegaea provides expertise in water, civils and environment including discharge of conditions for outline and full planning.” Source: RevenueBase Database · checked Sep 28, 2026
7	Irrigation Engineers LTD	Indirect evidence	High Wycombe, United KingdomHQ checked Sep 28, 2026	1-10	28 contacts →
	Indirect evidence “Irrigation Engineers Ltd is a consultancy with international experience having worked throughout Europe, Africa, the Middle East and Asia.” Source: RevenueBase Database · checked Sep 28, 2026
8	Highwater	Indirect evidence	Nairn, United KingdomHQ checked Sep 28, 2026	51-200	22 contacts →
	Indirect evidence “Specialists in Private Water Supplies.” Source: RevenueBase Database · checked Sep 28, 2026
9	Envireau Water	Indirect evidence	Melbourne, United KingdomHQ checked Sep 28, 2026	11-50	21 contacts →
	Indirect evidence “Envireau Water is one of the UK's leading independent consultancies specialising in water management and environmental regulation.” Source: RevenueBase Database · checked Sep 28, 2026
10	Aqua-Tech	Indirect evidence	Edinburgh, United KingdomHQ checked Sep 28, 2026	11-50	19 contacts →
	Indirect evidence “At Aqua-Tech, we deliver pure expertise and exceptional outcomes in the water and utility sectors.” Source: RevenueBase Database · checked Sep 28, 2026
11	CQA International	Indirect evidence	Keele, United KingdomHQ checked Sep 28, 2026	11-50	19 contacts →
	Indirect evidence “CQA International Ltd (CQA) is an environmental engineering consultancy that specialises in geotechnical and mining engineering, containment systems, waste management and…” Source: RevenueBase Database · checked Sep 28, 2026
12	MCL Consulting	Partial evidence	Belfast, United KingdomHQ checked Sep 28, 2026	11-50	18 contacts →
	Partial evidence “Office Locations Belfast Based Consultancy Firm About Us MCL Consulting always operate as a team.” Source: RevenueBase Database · checked Sep 28, 2026
13	Stuart Wells	Indirect evidence	Shropham, United KingdomHQ checked Sep 28, 2026	11-50	18 contacts →
	Indirect evidence “Stuart Wells boasts over 30 years’ experience in construction dewatering and well services.” Source: RevenueBase Database · checked Sep 28, 2026
14	Water Environment Limited	Partial evidence	Surbiton, United KingdomHQ checked Sep 28, 2026	11-50	17 contacts →
	Partial evidence “Water Environment Limited provides technical consulting services, specific to the water and environmental sectors of engineering.” Source: RevenueBase Database · checked Sep 28, 2026
15	Soils Limited	Indirect evidence	Tadworth, United KingdomHQ checked Sep 28, 2026	11-50	17 contacts →
	Indirect evidence “Geotechnical and Environmental Consultants that have offices across the South of England and Europe.” Source: RevenueBase Database · checked Sep 28, 2026
16	Stillwater Associates LTD	Indirect evidence	Reigate, United KingdomHQ checked Sep 28, 2026	11-50	16 contacts →
	Indirect evidence “Stillwater Associates is dedicated to reservoir safety and water engineering services.” Source: RevenueBase Database · checked Sep 28, 2026
17	Groundtech Consulting Limited	Partial evidence	Orford Court, United KingdomHQ checked Sep 28, 2026	11-50	15 contacts →
	Partial evidence “Groundtech Consulting Limited are a Geo-Environmental Consultancy and Engineering Company offering a high quality service for a competitive price.” Source: RevenueBase Database · checked Sep 28, 2026
18	OGI Groundwater Specialists LTD	Partial evidence	Durham, United KingdomHQ checked Sep 28, 2026	11-50	14 contacts →
	Partial evidence “OGI has more than 30 years of experience in providing groundwater related services to clients and contractors in the United Kingdom and abroad.” Source: RevenueBase Database · checked Sep 28, 2026
19	WCI Group LTD	Indirect evidence	Taunton, United KingdomHQ checked Sep 28, 2026	11-50	14 contacts →
	Indirect evidence “WCI Group Ltd is the leading expert in water and wastewater engineering, delivering innovative solutions with over four decades of expertise.” Source: RevenueBase Database · checked Sep 28, 2026
20	Ashdown Site Investigation LTD	Indirect evidence	Ditchling, United KingdomHQ checked Sep 28, 2026	11-50	14 contacts →
	Indirect evidence “We are an environmental engineering practice, providing advice on foundation design, contamination assessment and the remediation of contaminated land.” Source: RevenueBase Database · checked Sep 28, 2026
21	FWS Consultants LTD	Indirect evidence	Durham, United KingdomHQ checked Sep 28, 2026	11-50	13 contacts →
	Indirect evidence “FWS Consultants Ltd is an established, internationally recognised consultancy with over 40 years' experience providing ground investigation, geo-environmental, geotechnical and…” Source: RevenueBase Database · checked Sep 28, 2026
22	Caley Water	Indirect evidence	Edinburgh, United KingdomHQ checked Sep 28, 2026	11-50	12 contacts →
	Indirect evidence “Caley Water is a water and environmental consultancy that offers a range of specialist hydraulic modelling, data survey management and civil engineering design services.” Source: RevenueBase Database · checked Sep 28, 2026
23	Abbeydale Geoscience	Indirect evidence	Wakefield, United KingdomHQ checked Sep 28, 2026	1-10	12 contacts →
	Indirect evidence “Geoscience consultancy based in Wakefield, West Yorkshire.” Source: RevenueBase Database · checked Sep 28, 2026
24	Fountains Direct LTD	Indirect evidence	Weybridge, United KingdomHQ checked Sep 28, 2026	11-50	11 contacts →
	Indirect evidence “Fountains Direct Limited’s strength lies in the depth of experience of its team and the quality of the products with which it works.” Source: RevenueBase Database · checked Sep 28, 2026
25	FPS Environmental LTD	Indirect evidence	Nottingham, United KingdomHQ checked Sep 28, 2026	1-10	11 contacts →
	Indirect evidence “As part of The FPS Group, FPS Environmental Ltd delivers engineering excellence within the flood, water, and environmental sectors.” 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: groundwater consulting firms. 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 groundwater consulting firms.
Partial evidence: Its own public description names part of groundwater consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name groundwater consulting firms. 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 160 groundwater consulting firms based in the United Kingdom

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Groundwater consulting firms based in the United Kingdom at a glance

As of Sep 28, 2026

47.5%Verified-email coverage

11.8Average contacts per company

1-10Median size (employees)

5.6%Largest-city concentration · London

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

104

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 160 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 groundwater consulting firms, 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 “groundwater consulting firms”. 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 groundwater consulting firms), 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 groundwater consulting firms, 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, 896 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 groundwater consulting firms, 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 groundwater consulting firms are there based in the United Kingdom?

RevenueBase identified 160 groundwater consulting firms 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?

Binnies, headquartered in Redhill, tops this list with the largest team on record.

Which city has the most groundwater consulting firms?

London leads with 9 headquartered companies, followed by Shrewsbury (6) and Edinburgh (4).

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 896 verified decision-maker contacts tracked across these 160 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.