Company lists · Data refreshed September 2026

Top 25 Ehs consultancies based in Ireland

Name: Ehs consultancies based in Ireland
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 24, 2026 436 companies tracked

RevenueBase identified 436 ehs consultancies headquartered in Ireland as of September 2026 and tracks 6,409 professional contacts across them, including 2,330 with verified work emails and 283 with mobile numbers. Dublin is the largest hub.

This list covers ehs consultancies headquartered in Ireland, 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 24, 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 24, 2026 86% judged on-target in blind review

436Companies

6,409Contacts tracked

2,330Verified emails

283Mobile numbers

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest ehs consultancies based in Ireland

Ranked by team size

Top 25 of 436 ehs consultancies based in Ireland, ranked by team size, largest first. Data refreshed Sep 24, 2026. RevenueBase Smart Search rates how each company's information relates to ehs consultancies: 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	Dornan	Indirect evidence	Cork, IrelandHQ checked Sep 24, 2026	501-1,000	1,257 contacts →
	Indirect evidence “Dornan Engineering concentrates on a market where quality is appreciated.” Source: RevenueBase Database · checked Sep 24, 2026
2	Shanahan Engineering	Indirect evidence	Dun Laoghaire, IrelandHQ checked Sep 24, 2026	501-1,000	400 contacts →
	Indirect evidence “Shanahan Engineering is a leading global energy services company.” Source: RevenueBase Database · checked Sep 24, 2026
3	O'connor Sutton Cronin	Indirect evidence	Dublin, IrelandHQ checked Sep 24, 2026	201-500	241 contacts →
	Indirect evidence “OCSC is an established International Multidisciplinary Consulting Engineering & Project Management Practice.” Source: RevenueBase Database · checked Sep 24, 2026
4	MKO	Indirect evidence	Galway, IrelandHQ checked Sep 24, 2026	201-500	210 contacts →
	Indirect evidence “MKO is Ireland’s largest Planning and Environmental consultancy.” Source: RevenueBase Database · checked Sep 24, 2026
5	Tritech Engineering	Indirect evidence	Dublin 22, IrelandHQ checked Sep 24, 2026	201-500	173 contacts →
	Indirect evidence “Driving ESG Success Through Precision Engineering Investors today face increasing pressure to achieve higher building performance standards, meet strict sustainability targets…” Source: RevenueBase Database · checked Sep 24, 2026
6	MWP	Indirect evidence	Blackrock, IrelandHQ checked Sep 24, 2026	51-200	160 contacts →
	Indirect evidence “MWP is a multi-disciplinary Engineering and Environmental Consulting Practice providing a first class service to its clients since it was founded in 1967.” Source: RevenueBase Database · checked Sep 24, 2026
7	Fehily Timoney And Company	Indirect evidence	Cork, IrelandHQ checked Sep 24, 2026	51-200	116 contacts →
	Indirect evidence “Fehily Timoney and Company is a Irish civil and environmental, engineering, scientific and planning consultancy specialising in the areas of Sustainable Infrastructure, Planning…” Source: RevenueBase Database · checked Sep 24, 2026
8	In2 Engineering	Indirect evidence	Dublin, IrelandHQ checked Sep 24, 2026	51-200	100 contacts →
	Indirect evidence “Engineering Firm of the Year 2025 - Engineering Excellence Awards 2025 Great Place To Work 2025-2026 accredited IN2 is a modern building services and environmental engineering…” Source: RevenueBase Database · checked Sep 24, 2026
9	Catalyst	Indirect evidence	Dublin 4, IrelandHQ checked Sep 24, 2026	51-200	99 contacts →
	Indirect evidence “We are a multi-disciplinary ESG, Technical Advisory and digitalisation consultancy with specialist expertise in the real estate, property and construction sectors.” Source: RevenueBase Database · checked Sep 24, 2026
10	Waterman Moylan Consulting Engineers	Indirect evidence	Dublin, IrelandHQ checked Sep 24, 2026	51-200	99 contacts →
	Indirect evidence “Waterman Moylan is a leading engineering and environmental consultancy providing specialist services to our clients in the property, infrastructure and environment markets in…” Source: RevenueBase Database · checked Sep 24, 2026
11	Ryan Hanley, NOW Stantec	Indirect evidence	Galway, IrelandHQ checked Sep 24, 2026	51-200	98 contacts →
	Indirect evidence “Ryan Hanley is a leading Engineering and Environmental Consultancy.” Source: RevenueBase Database · checked Sep 24, 2026
12	Occupli	Indirect evidence	Cork, IrelandHQ checked Sep 24, 2026	51-200	80 contacts →
	Indirect evidence “Occupli is a leading provider of Health and Safety, Energy and Environmental services in Ireland.” Source: RevenueBase Database · checked Sep 24, 2026
13	Jennings O'donovan & Partners	Indirect evidence	Sligo, IrelandHQ checked Sep 24, 2026	51-200	79 contacts →
	Indirect evidence “Jennings O’Donovan is a multidisciplinary consulting engineering firm specialising in renewable energy, water supply, wastewater treatment and in the provision of planning and…” Source: RevenueBase Database · checked Sep 24, 2026
14	Kiernan Engineering	Indirect evidence	Cork, IrelandHQ checked Sep 24, 2026	51-200	76 contacts →
	Indirect evidence “Kiernan Electrical Ireland Ltd.” Source: RevenueBase Database · checked Sep 24, 2026
15	Prochem Engineering	Indirect evidence	Kilkenny, IrelandHQ checked Sep 24, 2026	51-200	75 contacts →
	Indirect evidence “Prochem Engineering is one of the leading engineering consultancy firms in Ireland, having been established in 1995.” Source: RevenueBase Database · checked Sep 24, 2026
16	Ayrton Group	Indirect evidence	Dublin 24, IrelandHQ checked Sep 24, 2026	51-200	75 contacts →
	Indirect evidence “Ayrton Group is a dynamic professional services company dedicated to excellence with a diverse portfolio of businesses ranging from risk management, engineering, recruitment…” Source: RevenueBase Database · checked Sep 24, 2026
17	AWN Consulting LTD	Indirect evidence	Dublin, IrelandHQ checked Sep 24, 2026	51-200	74 contacts →
	Indirect evidence “AWN Consulting is a multidisciplinary consultancy offering specialist design advice in respect of a wide range of engineering and environmental disciplines.” Source: RevenueBase Database · checked Sep 24, 2026
18	Tandem Project Management LTD	Partial evidence	Blackrock, IrelandHQ checked Sep 24, 2026	51-200	65 contacts →
	Partial evidence “Tandem is an engineering consultancy specialising in project management, multi-disciplined engineering design, construction management, energy & carbon reduction, EHS and talent…” Source: RevenueBase Database · checked Sep 24, 2026
19	H2 Compliance	Indirect evidence	Dublin, IrelandHQ checked Sep 24, 2026	11-50	56 contacts →
	Indirect evidence “H2 Compliance, part of the Landbell Group, is a global consultancy helping businesses navigate the complex world of chemical, environmental, and circular economy compliance.” Source: RevenueBase Database · checked Sep 24, 2026
20	Southern Scientific Services LTD	Indirect evidence	Co. Kerry, IrelandHQ checked Sep 24, 2026	51-200	56 contacts →
	Indirect evidence “We are an Irish owned and operated environmental consultancy and testing facility.” Source: RevenueBase Database · checked Sep 24, 2026
21	Varming Consulting Engineers LTD	Indirect evidence	Dundrum, IrelandHQ checked Sep 24, 2026	11-50	55 contacts →
	Indirect evidence “At Varming, we’re all about cutting-edge design and meticulous oversight of mechanical and electrical services, whether it’s for brand-new constructions or revitalizing existing…” Source: RevenueBase Database · checked Sep 24, 2026
22	Axiseng	Indirect evidence	Dublin, IrelandHQ checked Sep 24, 2026	11-50	47 contacts →
	Indirect evidence “Axiseng Consulting Engineers is a premier independent building services consulting engineering practice, founded in 2004 and celebrating 20 years of excellence in delivering…” Source: RevenueBase Database · checked Sep 24, 2026
23	Climeaction	Indirect evidence	Cork, IrelandHQ checked Sep 24, 2026	11-50	42 contacts →
	Indirect evidence “Climeaction Cork & Boston \| B Corp Certified \| ISO 9001 & Accredited Climeaction is an industrial decarbonisation and carbon intelligence company.” Source: RevenueBase Database · checked Sep 24, 2026
24	Premium Power LTD	Indirect evidence	Dublin, IrelandHQ checked Sep 24, 2026	11-50	42 contacts →
	Indirect evidence “Premium Power is an electrical engineering consultancy focused on providing innovative, bespoke solutions to the data centre, pharmaceutical, manufacturing, renewable & utility…” Source: RevenueBase Database · checked Sep 24, 2026
25	Malone O'regan Environmental	Indirect evidence	Dublin, IrelandHQ checked Sep 24, 2026	11-50	36 contacts →
	Indirect evidence “MOR Environmental is a leading environmental consultancy firm with offices in Dublin, Cork and Tullamore.” Source: RevenueBase Database · checked Sep 24, 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: ehs consultancies. 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 ehs consultancies.
Partial evidence: Its own public description names part of ehs consultancies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name ehs consultancies. 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 436 ehs consultancies based in Ireland

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 2,330 reachable decision-makers.

Free signup · no credit card

View the full list →

Ehs consultancies based in Ireland at a glance

As of Sep 24, 2026

36.4%Verified-email coverage

4.4%Mobile-number coverage

14.7Average contacts per company

1-10Median size (employees)

14.9%Largest-city concentration · Dublin

Sep 24, 2026Page data refreshed

Companies by employee count

1-10

281

11-50

112

51-200

201-500

501-1,000

1,001-5,000

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 26.0d

1,7720–30

52131–60

3561–90

090–180

2180+

Company record updated

Median 78.0d

00–30

1,71531–60

2,78061–90

1,58890–180

326180+

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 ehs consultancies, 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 Ireland whose own description of what they do matches “ehs consultancies”. 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 ehs consultancies), 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 ehs consultancies, and records with no verified work email. Companies headquartered outside Ireland 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, 2,330 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 24, 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.

Ehs consultancies by metro

Ehs consultancies in Dublin65
Ehs consultancies in Cork28

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 ehs consultancies, 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 ehs consultancies are there based in Ireland?

RevenueBase identified 436 ehs consultancies headquartered in Ireland 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?

Dornan, headquartered in Little Island, tops this list with the largest team on record.

Which city has the most ehs consultancies?

Dublin leads with 65 headquartered companies, followed by Cork (28) and Limerick (14).

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 2,330 verified decision-maker contacts tracked across these 436 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 24, 2026.

Ready to reach these companies? Verified emails and direct dials for all 436 ehs consultancies based in Ireland. Start with a free account, no credit card.

Download this list →

Related lists

Ehs consultancies by geography

Browse the directory

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.