Company lists · Data verified August 2026

Top 25 Ecological consulting firms based in the United Kingdom

Name: Ecological consulting firms based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 927 companies tracked

There are 927 ecological consulting firms headquartered in the United Kingdom (RevenueBase, August 2026). RevenueBase tracks 13,186 professional contacts across them, including 6,661 with verified work emails and 1,487 with mobile numbers. London is the largest hub.

This list covers ecological 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. Data current as of August 28, 2026.

927Companies

13,186Contacts tracked

6,661Verified emails

1,487Mobile numbers

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The 25 largest ecological consulting firms based in the United Kingdom

Ranked by team size

Top 25 of 927 ecological consulting firms based in the United Kingdom, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Exponent	London	1,001-5,000	1,561	980
2	Ricardo PLC	London	1,001-5,000	680	290
3	ADP Consulting	London	201-500	463	270
4	Fairhurst	London	201-500	446	261
5	LUC	Sheffield	201-500	379	247
6	Atelier TEN	London	51-200	321	229
7	Arbtech	London	51-200	217	123
8	The Erith Group	London	501-1,000	215	127
9	RSK Biocensus	Leeds	201-500	164	119
10	Aqua Consultants	Birmingham	51-200	163	99
11	Lucion	Gateshead	501-1,000	162	97
12	Arthian LTD	Anglesey	201-500	152	105
13	Jasco Applied Sciences	Droxford	51-200	142	92
14	Tyler Grange B Corp	London	51-200	137	99
15	Thomson Environmental Consultants	Manchester	51-200	131	88
16	The Environmental Dimension Partnership LTD	Cheltenham	51-200	124	91
17	Middlemarch	Southampton	51-200	118	70
18	Greengage Environmental LTD	Manchester	51-200	92	52
19	AES Sustainability Consultants	Tiverton	51-200	91	70
20	Cura Terrae Land & Nature	Sheffield	51-200	90	54
21	Lanpro	London	51-200	86	51
22	CSA Environmental	Tewkesbury	51-200	76	54
23	Ocean Ecology LTD	Gloucester	51-200	76	48
24	Rappor	Bristol	51-200	75	55
25	Rammsanderson Ecology LTD	Stafford	51-200	74	45

Showing 25 of 927 ecological consulting firms based in the United Kingdom

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Ecological consulting firms based in the United Kingdom at a glance

As of Aug 28, 2026

1-10Median size (employees)

LondonLargest hub · 95 HQs

1,487Contacts with mobile numbers

12Emails re-verified in last 30 days

Companies by employee count

1-10

625

11-50

219

51-200

201-500

501-1,000

1,001-5,000

Ecological consulting firms by metro

Metro	Companies
Ecological consulting firms in London	95
Ecological consulting firms in Bristol	20
Ecological consulting firms in Manchester	19
Ecological consulting firms in Exeter	15
Ecological consulting firms in Cambridge	12
Ecological consulting firms in Edinburgh	12
Ecological consulting firms in Belfast	11

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “ecological consulting firms”, with match quality audited by blind human judging, and headquartered in the United Kingdom.
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: Contact records re-verify on a rolling cadence; 12 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many ecological consulting firms are there based in the United Kingdom?

There are 927 ecological consulting firms headquartered in the United Kingdom as of August 2026 (RevenueBase).

What is the largest company on this list?

Exponent, headquartered in London, tops this list with the largest team on record.

Which city has the most ecological consulting firms?

London leads with 95 headquartered companies, followed by Bristol (20) and Manchester (19).

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 6,661 verified decision-maker contacts tracked across these 927 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.