Company lists · Data refreshed November 2026

Top 25 Building systems contractors based in the United Kingdom

RevenueBase identified 3,453 company matches for building systems contractors associated with the United Kingdom as of November 2026 and tracks 44,162 professional contacts across them, including 15,676 with verified work emails. London is the largest hub.

This list covers company matches for building systems contractors 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 November 6, 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 Nov 6, 2026 How this list was built
3,453Companies
44,162Contacts tracked
15,676Verified emails
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The 25 largest building systems contractors based in the United Kingdom

Ranked by team size
Top 25 of 3,453 company matches for building systems contractors based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchLondon, United KingdomHQ recorded Nov 6, 20261,001-5,0001,637 contacts →

Exact match

“Who we are: At ISG, our vision is to be the world’s most dynamic construction services company, delivering places that help people and businesses thrive.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchPrescot, United KingdomHQ recorded Nov 6, 20261,001-5,0001,373 contacts →

Exact match

“At MJ Quinn we believe in creating great connections, with our customers, our people and our world.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchLondon, United KingdomHQ recorded Nov 6, 2026501-1,000650 contacts →

Exact match

“Axis delivers property maintenance, compliance, refurbishment and infrastructure-related services for organisations across social housing, healthcare, education, defence, blue…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchDartford, United KingdomHQ recorded Nov 6, 20261,001-5,000650 contacts →

Exact match

“Part of the Laing O’Rourke Group, and founded on more than 200 years of experience, we are a leading construction and infrastructure technology services provider, supplying a…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchStirling, United KingdomHQ recorded Nov 6, 2026501-1,000629 contacts →

Exact match

“The FES Group is one of the largest independent technical services companies in the UK over 60 years of experience providing building services solutions to a wide range of…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchTelford, United KingdomHQ recorded Nov 6, 20261,001-5,000564 contacts →

Exact match

“Dodd Group was formed in 1947 in Shropshire and has remained a privately owned family business.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchStoke On Trent, United KingdomHQ recorded Nov 6, 2026501-1,000490 contacts →

Exact match

“Novus Property Solutions is a leading specialist in property maintenance, refurbishment, retrofit and compliance services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchExeter, United KingdomHQ recorded Nov 6, 2026501-1,000389 contacts →

Exact match

“Trinity’s mission statement is simple - to provide high quality design, installation, commissioning and long term after care of Fire Detection, Fire Suppression, Life Safety and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchGlasgow, United KingdomHQ recorded Nov 6, 2026501-1,000380 contacts →

Exact match

“City Building Engineering Services is a construction and engineering company providing constructive solutions within a variety of sectors.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchLondon, United KingdomHQ recorded Nov 6, 2026501-1,000363 contacts →

Exact match

“Since 1988, Jaguar Building Services has been a trusted leader in the mechanical, electrical, and public health maintenance of some of London's most prestigious landmark buildings.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchNorthampton, United KingdomHQ recorded Nov 6, 2026501-1,000352 contacts →

Exact match

“The Briggs & Forrester Group is an award winning building services specialist and is one of the industry’s largest independent contractors with an annual turnover in excess of…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchSouthampton, United KingdomHQ recorded Nov 6, 20261,001-5,000332 contacts →

Exact match

“CLC provides property maintenance, compliance, refurbishment and infrastructure-related services for customers across social housing, healthcare, defence, education, commercial…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchGlasgow, United KingdomHQ recorded Nov 6, 2026501-1,000327 contacts →

Exact match

“Emtec Group are a building services and engineering contractor providing professional, quality, and cost efficient services throughout the UK.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchBristol, United KingdomHQ recorded Nov 6, 2026201-500325 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 · Nov 6, 2026 · View company records in RevenueBase
15Exact matchGlasgow, United KingdomHQ recorded Nov 6, 2026201-500317 contacts →

Exact match

“Star Refrigeration is a globally diversified cooling, heating, freezing, mechanical and electrical group of companies.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchBanbridge, United KingdomHQ recorded Nov 6, 2026201-500282 contacts →

Exact match

“Kane has a strong heritage in designing, developing, and delivering building-service solutions throughout the UK and Ireland.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchLondon, United KingdomHQ recorded Nov 6, 2026501-1,000268 contacts →

Exact match

“Gratte Brothers Group is a leading independent provider of comprehensive building services, renowned for exceptional quality.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchEdinburgh, United KingdomHQ recorded Nov 6, 20261,001-5,000255 contacts →

Exact match

“Arthur McKay is one of the UK's leading Building Support Services companies.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchRomford, United KingdomHQ recorded Nov 6, 2026201-500252 contacts →

Exact match

“Essex Services Group (ESG) is a multi-disciplined MEP company founded in 1975, beginning as an electrical services contractor.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchStevenage, United KingdomHQ recorded Nov 6, 2026201-500241 contacts →

Exact match

“JCA is a multi-faceted engineering services and construction business.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchBristol, United KingdomHQ recorded Nov 6, 202651-200224 contacts →

Exact match

“THE CONSTRUCTION PEOPLE - At Lancer Scott we care about what we do and the people we work with.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchHarlow, United KingdomHQ recorded Nov 6, 2026201-500223 contacts →

Exact match

“Part of the SCCI Group, SCCI Alphatrack designs, installs, and maintains connected building systems across social housing, commercial property, new builds, and public sector…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchMalpas, United KingdomHQ recorded Nov 6, 2026501-1,000220 contacts →

Exact match

“Welcome to Barlows (UK) Ltd.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchSandling, United KingdomHQ recorded Nov 6, 2026201-500194 contacts →

Exact match

“BJF Group is a diverse building solutions company comprised of six complementary divisions; Facilities Management, Construction, Mechanical & Electrical, Project Services, MEP…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchBirmingham, United KingdomHQ recorded Nov 6, 2026201-500191 contacts →

Exact match

“Carter Synergy is a nation-wide provider of refrigeration, mechanical, electrical and other core building services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 3,453 building systems contractors based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 15,676 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Building systems contractors based in the United Kingdom at a glance

As of Nov 6, 2026
35.5%Verified-email coverage
12.8Average contacts per company
11-50Median size (employees)
11.5%Largest-city concentration · London
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
1,496
11-50
1,314
51-200
398
201-500
64
501-1,000
21
1,001-5,000
16
5,001-10,000
1

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 3,453 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 “building systems contractors” 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 15,676 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 November 6, 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 “building systems contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many building systems contractors are there based in the United Kingdom?

RevenueBase identified 3,453 company matches for building systems contractors associated with the United Kingdom as of November 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?

ISG tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most building systems contractors?

London leads with 396 company records, followed by Birmingham (55) and Manchester (47).

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 15,676 professional contacts with verified work emails tracked across these 3,453 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 November 6, 2026.

Ready to reach these companies? Verified emails and direct dials for all 3,453 building systems contractors based in the United Kingdom. Start with a free account, no credit card.

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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.