Company lists · Data refreshed September 2026

Top 25 Hydro engineering and consulting firms based in the United Kingdom

Name: Hydro engineering and 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 1,071 companies tracked

RevenueBase identified 1,071 hydro engineering and consulting firms headquartered in the United Kingdom as of September 2026 and tracks 28,653 professional contacts across them, including 10,290 with verified work emails. London is the largest hub.

This list covers hydro engineering and 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

1,071Companies

28,653Contacts tracked

10,290Verified emails

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The 25 largest hydro engineering and consulting firms based in the United Kingdom

Ranked by team size

Top 25 of 1,071 hydro engineering and 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 hydro engineering and 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	RPS	Strong evidence	Abingdon, United KingdomHQ checked Sep 28, 2026	5,001-10,000	4,684 contacts →
	Strong evidence “Founded in 1970, RPS is part of Tetra Tech, a leading global provider of consulting and engineering services.” Source: RevenueBase Database · checked Sep 28, 2026
2	Faithful Gould	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1,001-5,000	1,194 contacts →
	Indirect evidence “Faithful+Gould is now AtkinsRéalis.” Source: RevenueBase Database · checked Sep 28, 2026
3	Hoare LEA	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	501-1,000	1,103 contacts →
	Partial evidence “We are an award-winning engineering consultancy with a creative team of engineers, designers, and technical specialists.” Source: RevenueBase Database · checked Sep 28, 2026
4	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
5	Ricardo PLC	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1,001-5,000	670 contacts →
	Indirect evidence “Click the 'Follow' button and explore careers at Ricardo on our 'Jobs' and 'Life' tabs and at careers.ricardo.com.” Source: RevenueBase Database · checked Sep 28, 2026
6	KBR Granherne	Strong evidence	Leatherhead, United KingdomHQ checked Sep 28, 2026	501-1,000	648 contacts →
	Strong evidence “KBR Consulting is one of the world's foremost engineering consultancies specializing in the hydrocarbon and energy industry.” Source: RevenueBase Database · checked Sep 28, 2026
7	Bgen LTD	Indirect evidence	Warrington, United KingdomHQ checked Sep 28, 2026	1,001-5,000	646 contacts →
	Indirect evidence “We are BGEN.” Source: RevenueBase Database · checked Sep 28, 2026
8	Waterman Group	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	1,001-5,000	563 contacts →
	Partial evidence “Waterman Group is a multidisciplinary consultancy providing sustainable solutions to meet the planning, engineering design and project delivery needs of the property…” Source: RevenueBase Database · checked Sep 28, 2026
9	Fairhurst	Partial evidence	Glasgow, United KingdomHQ checked Sep 28, 2026	201-500	437 contacts →
	Partial evidence “Welcome to Fairhurst: Fairhurst is a Limited Liability Partnership (LLP) of Consulting Engineers practicing in the UK, employing circa 400 staff in 16 principal offices.” Source: RevenueBase Database · checked Sep 28, 2026
10	Morson Projects	Partial evidence	Manchester, United KingdomHQ checked Sep 28, 2026	501-1,000	313 contacts →
	Partial evidence “Morson Projects are a reputable multi-disciplinary engineering consultancy with over 40 years’ experience and 950 personnel across the UK and overseas.” Source: RevenueBase Database · checked Sep 28, 2026
11	The Erith Group	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	501-1,000	217 contacts →
	Partial evidence “Supported by a network of specialist consulting engineers, environmentalists and our own collective experience, our philosophy is simple: to provide a qualitative economic and…” Source: RevenueBase Database · checked Sep 28, 2026
12	JURU	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	176 contacts →
	Partial evidence “Founded in 2015, Juru is an international engineering and consultancy firm with a mission to solve engineering and environmental problems.” Source: RevenueBase Database · checked Sep 28, 2026
13	Clancy Consulting	Partial evidence	Manchester, United KingdomHQ checked Sep 28, 2026	51-200	168 contacts →
	Partial evidence “We’re a specialist engineering consultancy working nationally to deliver industry-leading engineering services and creative engineering designs that work for today and for future…” Source: RevenueBase Database · checked Sep 28, 2026
14	Hydro International	Partial evidence	Clevedon, United KingdomHQ checked Sep 28, 2026	201-500	166 contacts →
	Partial evidence “Hydro International, a CRH Company, provides advanced products, services and expertise to help municipal, industrial and construction customers to improve their water management…” Source: RevenueBase Database · checked Sep 28, 2026
15	JNP Group	Indirect evidence	Amersham, United KingdomHQ checked Sep 28, 2026	51-200	166 contacts →
	Indirect evidence “With over 40 years experience JNP Group deliver highly professional, integrated efficient design and consultancy solutions from inception to completion, irrespective of project…” Source: RevenueBase Database · checked Sep 28, 2026
16	Price & Myers	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	159 contacts →
	Strong evidence “Consulting Engineers Price & Myers is a structural and civil engineering practice, established by Sam Price and Robert Myers in 1978.” Source: RevenueBase Database · checked Sep 28, 2026
17	The Sirius Group	Partial evidence	Durham, United KingdomHQ checked Sep 28, 2026	201-500	156 contacts →
	Partial evidence “End to End Service: From initial investigations and assessments to planning, design and engineering support, we give you a foundation of confidence for your site development…” Source: RevenueBase Database · checked Sep 28, 2026
18	Z-Tech Control Systems LTD	Indirect evidence	Swavesey, United KingdomHQ checked Sep 28, 2026	201-500	156 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
19	Rendel Limited	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	150 contacts →
	Partial evidence “Rendel celebrated its 185th Anniversary in 2024, making us one of the oldest civil and structural engineering companies in the UK.” Source: RevenueBase Database · checked Sep 28, 2026
20	Harley Haddow	Partial evidence	Edinburgh, United KingdomHQ checked Sep 28, 2026	51-200	146 contacts →
	Partial evidence “Harley Haddow are Civil, Structural, Mechanical, Electrical, Building Performance & Sustainability and Geotechnical Consulting Engineers.” Source: RevenueBase Database · checked Sep 28, 2026
21	Longitude Engineering	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	138 contacts →
	Partial evidence “The Engineering Consultants.” Source: RevenueBase Database · checked Sep 28, 2026
22	Envolve Infrastructure	Indirect evidence	Cardiff Road, United KingdomHQ checked Sep 28, 2026	201-500	136 contacts →
	Indirect evidence “We’re envolve, specialist civil engineers.” Source: RevenueBase Database · checked Sep 28, 2026
23	Mackley	Indirect evidence	Small Dole, United KingdomHQ checked Sep 28, 2026	51-200	116 contacts →
	Indirect evidence “Mackley provides a comprehensive range of services from conception through construction to project delivery.” Source: RevenueBase Database · checked Sep 28, 2026
24	Brookbanks	Partial evidence	United KingdomHQ checked Sep 28, 2026	51-200	113 contacts →
	Partial evidence “Project Consultant & Development Partner: Civil, Structural, Mechanical & Electrical Engineering Designs; Highways, Transportation & Environmental; Cost & Commercial & Development…” Source: RevenueBase Database · checked Sep 28, 2026
25	Campbellreith	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	113 contacts →
	Partial evidence “CampbellReith is an independent firm of consulting engineers providing structural, civil, geotechnical, land quality, development planning and transport planning services.” 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: hydro engineering and 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 hydro engineering and consulting firms.
Partial evidence: Its own public description names part of hydro engineering and consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name hydro engineering and 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 1,071 hydro engineering and consulting firms based in the United Kingdom

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Hydro engineering and consulting firms based in the United Kingdom at a glance

As of Sep 28, 2026

35.9%Verified-email coverage

26.8Average contacts per company

1-10Median size (employees)

13.2%Largest-city concentration · London

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

586

11-50

336

51-200

103

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 1,071 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 hydro engineering and 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 “hydro engineering and 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 hydro engineering and 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 hydro engineering and 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, 10,290 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.

Hydro engineering and consulting firms by metro

Hydro engineering and consulting firms in London141

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 hydro engineering and 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 hydro engineering and consulting firms are there based in the United Kingdom?

RevenueBase identified 1,071 hydro engineering and 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?

RPS, headquartered in Abingdon, tops this list with the largest team on record.

Which city has the most hydro engineering and consulting firms?

London leads with 141 headquartered companies, followed by Manchester (24) and Bristol (20).

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 10,290 verified decision-maker contacts tracked across these 1,071 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.