Company lists · Data refreshed September 2026

Top 25 Mechanical contractors for energy based in the United Kingdom

Name: Mechanical contractors for energy based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 1,418 companies tracked

RevenueBase identified 1,418 company matches for mechanical contractors for energy associated with the United Kingdom as of September 2026 and tracks 13,780 professional contacts across them, including 4,819 with verified work emails. London is the largest hub.

This list covers company matches for mechanical contractors for energy associated with the United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 17, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 17, 2026 How this list was built

1,418Companies

13,780Contacts tracked

4,819Verified emails

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The 25 largest mechanical contractors for energy based in the United Kingdom

Ranked by team size

Top 25 of 1,418 company matches for mechanical contractors for energy based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 17, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Space Engineering Services LTD	Exact match	Bristol, United KingdomHQ recorded Sep 17, 2026	201-500	312 contacts →
	Exact match “Space Engineering Services is the UK’s leading provider of refrigeration, heating, ventilation and air conditioning services.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
2	Rainham Industrial Services LTD	Exact match	Essex, United KingdomHQ recorded Sep 17, 2026	501-1,000	264 contacts →
	Exact match “Rainham provides specialist industrial services that support the installation, maintenance, refurbishment, decommissioning and replacement of large industrial plants and building…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
3	Laker Vent Engineering Limited	Exact match	Ellesmere Port, United KingdomHQ recorded Sep 17, 2026	201-500	175 contacts →
	Exact match “Piping and Mechanical contractors for the, Nuclear, Power, Energy from Waste, Pharmaceutical, Food, Brewing, Chemical, Agrochemical, Oil & Gas, Healthcare & Aerospace process…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
4	Swegon Uk&i	Exact match	Ashby-de-la-zouch, United KingdomHQ recorded Sep 17, 2026	501-1,000	156 contacts →
	Exact match “Swegon is a market leading supplier of energy efficient indoor climate, cooling and life safety systems.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
5	MCS	Exact match	Bristol, United KingdomHQ recorded Sep 17, 2026	51-200	138 contacts →
	Exact match “MCS Ltd are specialist building services engineers covering all aspects of commercial and industrial building services and infrastructure engineering across varying market sectors.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
6	Geoffrey Robinson Limited	Exact match	Billingham, United KingdomHQ recorded Sep 17, 2026	201-500	136 contacts →
	Exact match “Geoffrey Robinson are an award-winning mechanical, electrical and construction contractor, one of the largest in the North East.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
7	Irwin M&e	Exact match	Portadown, United KingdomHQ recorded Sep 17, 2026	201-500	134 contacts →
	Exact match “We provide a full range of Mechanical, Electrical, Energy and Renewables installation and maintenance services to clients, across both public and private sectors throughout the UK…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
8	Cilantro Engineering UK Limited	Exact match	London, United KingdomHQ recorded Sep 17, 2026	201-500	123 contacts →
	Exact match “Cilantro Engineering is a multi-discipline Building Services Contractor offering a vast range of Mechanical and Electrical Design & Installation services.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
9	Unitbirwelco	Exact match	Elba Crescent, United KingdomHQ recorded Sep 17, 2026	201-500	117 contacts →
	Exact match “As a leading expert in thermal equipment, UnitBirwelco is dedicated to delivering excellence in design, project management, manufacturing, fabrication, construction, and…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
10	East West Connect LTD	Exact match	Perivale, United KingdomHQ recorded Sep 17, 2026	201-500	111 contacts →
	Exact match “Founded in 1988, we are a family-owned business of passionate engineers who specialise in building services-driven construction projects, undertaking all major works in-house.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
11	Cavendish Northern Limited	Exact match	Billingham, United KingdomHQ recorded Sep 17, 2026	51-200	111 contacts →
	Exact match “CAVENDISH NORTHERN LTD (CNL) ARE A PIPEWORK AND MECHANICAL INSTALLATION CONTRACTING COMPANY.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
12	Stothers M&e LTD	Exact match	Belfast, United KingdomHQ recorded Sep 17, 2026	51-200	109 contacts →
	Exact match “Founded in 1957, Stothers (M&E) Ltd is a national market leader in the provision of Mechanical and Electrical Building Services and Contract Maintenance.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
13	Correct Contract Services CCS	Exact match	Andover, United KingdomHQ recorded Sep 17, 2026	201-500	108 contacts →
	Exact match “Correct Contract Services (CCS) is a trusted main contractor for compliance and energy services, expertly serving social housing landlords across the UK.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
14	Hotchkiss LTD	Exact match	Eastbourne, United KingdomHQ recorded Sep 17, 2026	201-500	107 contacts →
	Exact match “Hotchkiss is the UK's leading air conditioning and ventilation contractor.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
15	MSE LTD	Exact match	Redditch, United KingdomHQ recorded Sep 17, 2026	11-50	101 contacts →
	Exact match “MSE are a midlands based building services company and have over 30 years experience in the commercial and industrial environment working with a broad range of clients.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
16	Woodford	Exact match	Loughton, United KingdomHQ recorded Sep 17, 2026	51-200	99 contacts →
	Exact match “Woodford specialise in mechanical and electrical building services for the construction market.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
17	DPL Group LTD	Exact match	Ipswich, United KingdomHQ recorded Sep 17, 2026	51-200	96 contacts →
	Exact match “DPL Group consists of multiple divisions, including Mechanical & Electrical Installations, Fire & Security Installations and Renewable Technologies.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
18	Spirax Sarco UK And Ireland	Exact match	Cheltenham, United KingdomHQ recorded Sep 17, 2026	1,001-5,000	92 contacts →
	Exact match “Why are we here?” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
19	Oakray Limited	Exact match	Enfield, United KingdomHQ recorded Sep 17, 2026	201-500	90 contacts →
	Exact match “Oakray was established in 1979 and we are very proud of our long heritage.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
20	Taylor And Fraser	Exact match	Paisley, United KingdomHQ recorded Sep 17, 2026	51-200	88 contacts →
	Exact match “As a leading contractor within the construction and engineering industry, and now a proud subsidiary of Suir Engineering, we deliver projects across a range of markets to our…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
21	PJD Mechanical Engineering	Exact match	Doncaster, United KingdomHQ recorded Sep 17, 2026	51-200	86 contacts →
	Exact match “PJD Mechanical Engineering Ltd Ltd has worked with a number of leading clients, operators and technology companies throughout the UK energy sector for over 30 years.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
22	CPS Building Services LTD	Exact match	Cambridge, United KingdomHQ recorded Sep 17, 2026	51-200	85 contacts →
	Exact match “CPS Building Services Ltd are experts in design, installation and maintenance of all mechanical and electrical services including renewables.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
23	Gloster MEP LTD	Exact match	Southwark, United KingdomHQ recorded Sep 17, 2026	51-200	85 contacts →
	Exact match “Gloster MEP Ltd are a dynamic driven Mechanical and Electrical Contractor, well known within the industry for successfully delivering building services solutions to the Central…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
24	Purdy Part Of Sureserve	Exact match	London, United KingdomHQ recorded Sep 17, 2026	201-500	85 contacts →
	Exact match “Who are we?” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
25	Grant Walker Engineering	Exact match	London, United KingdomHQ recorded Sep 17, 2026	51-200	81 contacts →
	Exact match “Grant Walker Engineering specialise in the complete installation of Electrical and Mechanical systems across all work sectors including quality office developments, commercial and…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “mechanical contractors for energy”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 1,418 mechanical contractors for energy based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 4,819 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Mechanical contractors for energy based in the United Kingdom at a glance

As of Sep 17, 2026

35.0%Verified-email coverage

9.7Average contacts per company

11-50Median size (employees)

8.0%Largest-city concentration · London

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

551

11-50

654

51-200

161

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 1,418 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with the United Kingdom whose business descriptions match “mechanical contractors for energy” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 4,819 professional contacts with verified work emails across the full matched dataset. 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 17, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “mechanical contractors for energy”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many mechanical contractors for energy are there based in the United Kingdom?

RevenueBase identified 1,418 company matches for mechanical contractors for energy associated with the United Kingdom as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Space Engineering Services LTD tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most mechanical contractors for energy?

London leads with 114 company records, followed by Bristol (25) and Hull (19).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 4,819 professional contacts with verified work emails tracked across these 1,418 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 17, 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 SmartSearch, 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.