Company lists · Data refreshed September 2026

Top 25 Transit infrastructure contractors based in the United Kingdom

Name: Transit infrastructure contractors based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 108 companies tracked

RevenueBase identified 108 transit infrastructure contractors headquartered in the United Kingdom as of September 2026 and tracks 10,691 professional contacts across them, including 3,200 with verified work emails. London is the largest hub.

This list covers transit infrastructure contractors headquartered in the United Kingdom, 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 19, 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 19, 2026 86% judged on-target in blind review

108Companies

10,691Contacts tracked

3,200Verified emails

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The 25 largest transit infrastructure contractors based in the United Kingdom

Ranked by team size

Top 25 of 108 transit infrastructure contractors based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to transit infrastructure contractors: 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	Murphy	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	1,001-5,000	3,095 contacts →
	Partial evidence “Murphy is a leading international, multi-disciplined engineering and construction company founded in 1951 that improves life by delivering world-class infrastructure.” Source: RevenueBase Database · checked Sep 19, 2026
2	FM Conway LTD	Strong evidence	Sevenoaks, United KingdomHQ checked Sep 19, 2026	1,001-5,000	974 contacts →
	Strong evidence “FM Conway is a leading infrastructure services company delivering vital services in transportation, the built environment and open spaces for communities and businesses.” Source: RevenueBase Database · checked Sep 19, 2026
3	Colas Rail UK	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	1,001-5,000	868 contacts →
	Partial evidence “Colas Rail is one of Europe’s leading suppliers of railway infrastructure services, we are award-winning specialists having constructed all forms of railways across Europe and the…” Source: RevenueBase Database · checked Sep 19, 2026
4	Volkerrail LTD	Strong evidence	Doncaster, United KingdomHQ checked Sep 19, 2026	1,001-5,000	767 contacts →
	Strong evidence “Since entering the construction market in 1935, VolkerRail has become one of the UK’s leading multidisciplinary railway infrastructure contractors.” Source: RevenueBase Database · checked Sep 19, 2026
5	Octavius Infrastructure	Indirect evidence	Reigate, United KingdomHQ checked Sep 19, 2026	501-1,000	558 contacts →
	Indirect evidence “Bringing people together The Octavius Way, We collaborate with our customers, integrate our suppliers and develop our people to deliver assured, sustainable and efficient…” Source: RevenueBase Database · checked Sep 19, 2026
6	QTS Group	Partial evidence	Strathaven, United KingdomHQ checked Sep 19, 2026	501-1,000	486 contacts →
	Partial evidence “QTS is one of the country’s leading railways contractors, founded by MD, Alan McLeish.” Source: RevenueBase Database · checked Sep 19, 2026
7	Colas LTD	Strong evidence	Birmingham Business Park, United KingdomHQ checked Sep 19, 2026	1,001-5,000	459 contacts →
	Strong evidence “Colas is a world leader in the construction and maintenance of transport infrastructure.” Source: RevenueBase Database · checked Sep 19, 2026
8	Tunnelcraft LTD	Indirect evidence	Basildon, United KingdomHQ checked Sep 19, 2026	51-200	275 contacts →
	Indirect evidence “Tunnelcraft Ltd is currently working for the BAM Nuttall.” Source: RevenueBase Database · checked Sep 19, 2026
9	Dyer & Butler	Strong evidence	Southampton, United KingdomHQ checked Sep 19, 2026	501-1,000	266 contacts →
	Strong evidence “Founded in 1979, Dyer & Butler is a multi-disciplined engineering services specialist focused on transport infrastructure including airports, rail and underground.” Source: RevenueBase Database · checked Sep 19, 2026
10	TES 2000 LTD	Partial evidence	Colchester, United KingdomHQ checked Sep 19, 2026	201-500	142 contacts →
	Partial evidence “TES Ltd is a long established, highly regarded contractor to the rail industry.” Source: RevenueBase Database · checked Sep 19, 2026
11	Centregreat	Partial evidence	Bridgend, United KingdomHQ checked Sep 19, 2026	201-500	113 contacts →
	Partial evidence “Welcome to the Centregreat Group Centregreat is a well-established, high quality, infrastructure services provider, proud to serve Clients across a number of disciplines.” Source: RevenueBase Database · checked Sep 19, 2026
12	SWH	Indirect evidence	Exeter, United KingdomHQ checked Sep 19, 2026	201-500	62 contacts →
	Indirect evidence “Our origins are in highway maintenance as a new joint venture company, formed in 1995 by Colas Ltd and Eurovia UK Ltd specifically to win the Devon County Council highways…” Source: RevenueBase Database · checked Sep 19, 2026
13	Brodie Engineering LTD	Indirect evidence	Kilmarnock, United KingdomHQ checked Sep 19, 2026	51-200	58 contacts →
	Indirect evidence “Brodie Engineering is an innovative, highly experienced rolling stock engineering business offering a comprehensive range of maintenance, overhaul, engineering support, project…” Source: RevenueBase Database · checked Sep 19, 2026
14	Henderson & Taylor	Strong evidence	Chadwell St Mary, United KingdomHQ checked Sep 19, 2026	201-500	55 contacts →
	Strong evidence “Henderson & Taylor is a multi-disciplinary contractor working in the Highways, Civil Engineering, and Rail Infrastructure sectors.” Source: RevenueBase Database · checked Sep 19, 2026
15	Allied Infrastructure Management LTD	Strong evidence	Leigh, United KingdomHQ checked Sep 19, 2026	51-200	54 contacts →
	Strong evidence “Allied Infrastructure is a multi-disciplined specialist contractor working predominantly in the Highways, Airports & Defence sectors capable of handling small patches repairs…” Source: RevenueBase Database · checked Sep 19, 2026
16	Sonic Rail Services LTD	Indirect evidence	Burnham-on-crouch, United KingdomHQ checked Sep 19, 2026	51-200	49 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
17	Kelly Formwork UK LTD	Strong evidence	Essex, United KingdomHQ checked Sep 19, 2026	51-200	43 contacts →
	Strong evidence “Kelly Formwork UK Ltd have established themselves as a leading contractor in the field of Civil Engineering, Water Infrastructure and major Highways projects.” Source: RevenueBase Database · checked Sep 19, 2026
18	Haigh Rail Limited	Indirect evidence	Bamber Bridge, United KingdomHQ checked Sep 19, 2026	51-200	42 contacts →
	Indirect evidence “Haigh Rail Ltd is a trusted name in the rail and wider construction industries for delivering first-class engineering solutions.” Source: RevenueBase Database · checked Sep 19, 2026
19	ERG International Group	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	34 contacts →
	Partial evidence “Since incorporation in 1972, we have completed numerous significant projects in the power, water and transportation sectors.” Source: RevenueBase Database · checked Sep 19, 2026
20	Ncct Limited	Partial evidence	Dartford, United KingdomHQ checked Sep 19, 2026	51-200	33 contacts →
	Partial evidence “NCCT are a multi disciplined specialist contractor providing a fully integrated delivery solution for Electrical (HV & LV), Mechanical, Telecommunications and civils projects…” Source: RevenueBase Database · checked Sep 19, 2026
21	Sword Construction UK Limited	Partial evidence	Brigg, United KingdomHQ checked Sep 19, 2026	51-200	32 contacts →
	Partial evidence “Sword Construction UK Limited is an established civil engineering contractor operating across a range of sectors including highways, rail, water treatment, water retaining…” Source: RevenueBase Database · checked Sep 19, 2026
22	Gatwick Construction LTD	Strong evidence	Crawley, United KingdomHQ checked Sep 19, 2026	11-50	30 contacts →
	Strong evidence “GENERAL BUSINESS ACTIVITIES Gatwick Construction Limited is a privately owned company established in 2005 to cater specifically for services relating to transport infrastructure…” Source: RevenueBase Database · checked Sep 19, 2026
23	GBR Solutions Limited	Partial evidence	Ormskirk, United KingdomHQ checked Sep 19, 2026	51-200	29 contacts →
	Partial evidence “GBR Solutions Limited is a Civils Subcontractor working on the Railway Infrastructure and Construction Industry.” Source: RevenueBase Database · checked Sep 19, 2026
24	Rejuvo Jpcs	Partial evidence	Hampton Heath, United KingdomHQ checked Sep 19, 2026	51-200	20 contacts →
	Partial evidence “JPCS is a nationwide contractor, delivering safe and sustainable civil engineering and maintenance services to the public and private sectors, across the highways, rail and energy…” Source: RevenueBase Database · checked Sep 19, 2026
25	GPX Rail LTD	Indirect evidence	Hanwell, United KingdomHQ checked Sep 19, 2026	1-10	19 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 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: transit infrastructure contractors. 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 transit infrastructure contractors.
Partial evidence: Its own public description names part of transit infrastructure contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name transit infrastructure contractors. 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 108 transit infrastructure contractors based in the United Kingdom

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Transit infrastructure contractors based in the United Kingdom at a glance

As of Sep 19, 2026

29.9%Verified-email coverage

99.0Average contacts per company

11-50Median size (employees)

14.8%Largest-city concentration · London

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 108 companies.

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 transit infrastructure contractors, 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 the United Kingdom whose own description of what they do matches “transit infrastructure contractors”. 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 transit infrastructure contractors), 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 transit infrastructure contractors, and records with no verified work email. Companies headquartered outside United Kingdom 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, 3,200 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 19, 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.

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 transit infrastructure contractors, 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 transit infrastructure contractors are there based in the United Kingdom?

RevenueBase identified 108 transit infrastructure contractors headquartered in the United Kingdom 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?

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

Which city has the most transit infrastructure contractors?

London leads with 16 headquartered companies, followed by Birmingham (3) and Crewe (3).

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 3,200 verified decision-maker contacts tracked across these 108 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 19, 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 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.