Company lists · Data refreshed November 2026

Top 25 Infrastructure conglomerates based in the United Kingdom

RevenueBase identified 753 company matches for infrastructure conglomerates associated with the United Kingdom as of November 2026 and tracks 96,818 professional contacts across them, including 30,572 with verified work emails. London is the largest hub.

This list covers company matches for infrastructure conglomerates 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
753Companies
96,818Contacts tracked
30,572Verified emails
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The 25 largest infrastructure conglomerates based in the United Kingdom

Ranked by team size
Top 25 of 753 company matches for infrastructure conglomerates 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, 202610001+11,681 contacts →

Exact match

“Balfour Beatty is a leading international infrastructure group.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchUk, United KingdomHQ recorded Nov 6, 202610001+10,310 contacts →

Exact match

“Our purpose is to sustainably deliver infrastructure which is vital to the UK.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchLondon, United KingdomHQ recorded Nov 6, 202610001+7,043 contacts →

Exact match

“Who we are: Amey is a global, integrated infrastructure consultancy and operations partner.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchLondon, United KingdomHQ recorded Nov 6, 20261,001-5,0004,013 contacts →

Exact match

“Costain helps to improve people’s lives by creating connected, sustainable infrastructure that enables people and the planet thrive.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchSolihull, United KingdomHQ recorded Nov 6, 20265,001-10,0003,955 contacts →

Exact match

“Tarmac, a CRH company, is the UK’s leading sustainable building materials and construction solutions business.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchLondon, United KingdomHQ recorded Nov 6, 20261,001-5,0003,366 contacts →

Exact match

“Murphy is a leading international, multi-disciplined engineering and construction company founded in 1951 that improves life by delivering world-class infrastructure.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchLeeds, United KingdomHQ recorded Nov 6, 20261,001-5,0002,455 contacts →

Exact match

“Founded in 1921, NG Bailey has grown from a small electrical contractor into an award-winning, industry-leading group of companies.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchStockport, United KingdomHQ recorded Nov 6, 20261,001-5,0001,773 contacts →

Exact match

“OCU provides end-to-end infrastructure engineering in the utilities, digital, and energy markets, specialising in safely and efficiently delivering complex client requirements.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchStevenage, United KingdomHQ recorded Nov 6, 202610001+1,332 contacts →

Exact match

“M Group | Essential Infrastructure Services for Life It’s an exceptional time to be part of M Group.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchStirling, United KingdomHQ recorded Nov 6, 20261,001-5,0001,106 contacts →

Exact match

“We’re one of the largest family-owned construction, infrastructure and support services businesses in the UK, and we apply the same principles to every aspect of our business…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchDyce, United KingdomHQ recorded Nov 6, 20261,001-5,0001,058 contacts →

Exact match

“We are OEG, a leading energy solutions business providing mission critical infrastructure assets, technologies and services to the global energy industry.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchSevenoaks, United KingdomHQ recorded Nov 6, 20261,001-5,0001,053 contacts →

Exact match

“FM Conway is a leading infrastructure services company delivering vital services in transportation, the built environment and open spaces for communities and businesses.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchHoddesdon, United KingdomHQ recorded Nov 6, 20261,001-5,000934 contacts →

Exact match

“VolkerFitzpatrick is a multi-disciplinary contractor working in the civil engineering, building, rail, waste and energy infrastructure sectors.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchBorehamwood, United KingdomHQ recorded Nov 6, 20261,001-5,000901 contacts →

Exact match

“Over 25 years the JRL Group has grown from a company specialising in sub and superstructure packages to a business that offers integrated construction solutions by incorporating…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchWalsall, United KingdomHQ recorded Nov 6, 20261,001-5,000886 contacts →

Exact match

“Barhale was formed in 1980 as a specialist tunnelling contractor and grew initially through the successful delivery of projects in the water sector, developing mechanical and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchBarnsley, United KingdomHQ recorded Nov 6, 20261,001-5,000871 contacts →

Exact match

“Who are we?”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchLondon, United KingdomHQ recorded Nov 6, 20261,001-5,000760 contacts →

Exact match

“Aureos is a multi-disciplinary energy, transport networks specialist and engineering services provider, spanning the design, engineering, installation, maintenance, and crisis…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchStockton On Tees, United KingdomHQ recorded Nov 6, 2026501-1,000729 contacts →

Exact match

“px Group is a fully integrated infrastructure solutions business which delivers net zero and stakeholder success through elite performance in the safety, availability, reliability…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchMilton Keynes, United KingdomHQ recorded Nov 6, 20261,001-5,000707 contacts →

Exact match

“EKFB brings together international, market leading technical expertise.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact 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
21Exact matchReigate, United KingdomHQ recorded Nov 6, 2026501-1,000601 contacts →

Exact match

“Bringing people together The Octavius Way, We collaborate with our customers, integrate our suppliers and develop our people to deliver assured, sustainable and efficient…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchWoolpit, United KingdomHQ recorded Nov 6, 2026201-500559 contacts →

Exact match

“GTC is the market leading independent utility infrastructure provider to: • National & regional house builders and developers.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchLondon, United KingdomHQ recorded Nov 6, 20261,001-5,000545 contacts →

Exact match

“Atlantica is a sustainable infrastructure company that owns, manages, develops, builds and invests in renewable energy, storage, efficient natural gas and heat, transmission lines…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchWarrington, United KingdomHQ recorded Nov 6, 20261,001-5,000538 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchLondon, United KingdomHQ recorded Nov 6, 2026201-500505 contacts →

Exact match

“Actis is a leading growth market investor in sustainable infrastructure.”

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

Showing 25 of 753 infrastructure conglomerates based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 30,572 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Infrastructure conglomerates based in the United Kingdom at a glance

As of Nov 6, 2026
31.6%Verified-email coverage
128.6Average contacts per company
11-50Median size (employees)
27.0%Largest-city concentration · London
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
246
11-50
213
51-200
127
201-500
53
501-1,000
26
1,001-5,000
43
5,001-10,000
8
10001+
14

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 753 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 “infrastructure conglomerates” 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 30,572 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.

Infrastructure conglomerates by metro

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 “infrastructure conglomerates”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many infrastructure conglomerates are there based in the United Kingdom?

RevenueBase identified 753 company matches for infrastructure conglomerates 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?

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

Which city has the most infrastructure conglomerates?

London leads with 203 company records, followed by Manchester (21) and Birmingham (11).

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 30,572 professional contacts with verified work emails tracked across these 753 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.

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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.