Company lists · Data refreshed September 2026

Top 25 Railroad engineering firms based in the United Kingdom

Name: Railroad engineering firms 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 278 companies tracked

RevenueBase identified 278 railroad engineering firms headquartered in the United Kingdom as of September 2026 and tracks 6,604 professional contacts across them, including 2,415 with verified work emails. London is the largest hub.

This list covers railroad engineering firms 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 17, 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 17, 2026 86% judged on-target in blind review

278Companies

6,604Contacts tracked

2,415Verified emails

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The 25 largest railroad engineering firms based in the United Kingdom

Ranked by team size

Top 25 of 278 railroad engineering firms based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to railroad engineering firms: 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	Colas Rail UK	Indirect evidence	London, United KingdomHQ checked Sep 17, 2026	1,001-5,000	868 contacts →
	Indirect 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 17, 2026
2	Volkerrail LTD	Indirect evidence	Doncaster, United KingdomHQ checked Sep 17, 2026	1,001-5,000	767 contacts →
	Indirect 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 17, 2026
3	Eiffage Kier Ferrovial BAM Ekfb	Indirect evidence	Milton Keynes, United KingdomHQ checked Sep 17, 2026	1,001-5,000	655 contacts →
	Indirect evidence “EKFB brings together international, market leading technical expertise.” Source: RevenueBase Database · checked Sep 17, 2026
4	QTS Group	Indirect evidence	Strathaven, United KingdomHQ checked Sep 17, 2026	501-1,000	486 contacts →
	Indirect evidence “QTS is one of the country’s leading railways contractors, founded by MD, Alan McLeish.” Source: RevenueBase Database · checked Sep 17, 2026
5	Cleshar	Indirect evidence	London, United KingdomHQ checked Sep 17, 2026	1,001-5,000	236 contacts →
	Indirect evidence “Cleshar delivers multidisciplinary services to the rail infrastructure sector.” Source: RevenueBase Database · checked Sep 17, 2026
6	RSS Infrastructure LTD	Indirect evidence	Birmingham, United KingdomHQ checked Sep 17, 2026	1,001-5,000	186 contacts →
	Indirect evidence “RSS Infrastructure (RSSI) is an award-winning multi-disciplinary service provider for the rail, construction and utilities sectors.” Source: RevenueBase Database · checked Sep 17, 2026
7	Rendel Limited	Partial evidence	London, United KingdomHQ checked Sep 17, 2026	51-200	150 contacts →
	Partial evidence “Rendel celebrated its 185th Anniversary in 2024, making us one of the oldest civil and structural engineering companies in the UK.” Source: RevenueBase Database · checked Sep 17, 2026
8	TES 2000 LTD	Indirect evidence	Colchester, United KingdomHQ checked Sep 17, 2026	201-500	142 contacts →
	Indirect evidence “TES Ltd is a long established, highly regarded contractor to the rail industry.” Source: RevenueBase Database · checked Sep 17, 2026
9	Trackwork Limited	Partial evidence	Doncaster, United KingdomHQ checked Sep 17, 2026	201-500	141 contacts →
	Partial evidence “Trackwork Ltd is a specialist rail infrastructure engineering company providing the following services & products: • Track renewals, remodelling, installation & maintenance.” Source: RevenueBase Database · checked Sep 17, 2026
10	Loram UK LTD	Indirect evidence	Derby, United KingdomHQ checked Sep 17, 2026	51-200	111 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
11	Xrail Group LTD	Partial evidence	London, United KingdomHQ checked Sep 17, 2026	51-200	108 contacts →
	Partial evidence “WELCOME TO XRAIL Drawing on years of experience within major rail operators across all levels, we offer a higher quality precision engineering service to tackle the most…” Source: RevenueBase Database · checked Sep 17, 2026
12	Crouch Waterfall & Partners LTD	Indirect evidence	Bradley Stoke, United KingdomHQ checked Sep 17, 2026	51-200	96 contacts →
	Indirect evidence “Crouch Waterfall is an established firm of Civil, Structural and Geotechnical Consulting Engineers with extensive experience of Railways, Buildings, Roads, Bridges and Waterways.” Source: RevenueBase Database · checked Sep 17, 2026
13	NARRO	Indirect evidence	Edinburgh, United KingdomHQ checked Sep 17, 2026	51-200	89 contacts →
	Indirect evidence “Narro is a team of Consulting Structural & Civil Engineers with offices in Edinburgh, Glasgow, Stirling, Inverness, Aberdeen, Newcastle, and London.” Source: RevenueBase Database · checked Sep 17, 2026
14	DJ Civil Engineering Limited	Partial evidence	Oldham, United KingdomHQ checked Sep 17, 2026	201-500	76 contacts →
	Partial evidence “DJ CIVIL ENGINEERING LIMITED has earned the reputation of being an organisation that prioritises the demands and requirements of its clients and the safety of its employees.” Source: RevenueBase Database · checked Sep 17, 2026
15	CK Rail	Partial evidence	Chesterfield, United KingdomHQ checked Sep 17, 2026	51-200	72 contacts →
	Partial evidence “CK Rail blends over 70 years of combined civil engineering and construction services, with expertise from former Network Rail trained staff.” Source: RevenueBase Database · checked Sep 17, 2026
16	SEP Rail Services	Partial evidence	Middlesbrough, United KingdomHQ checked Sep 17, 2026	51-200	65 contacts →
	Partial evidence “A unique pre-construction services company, we work with contractors, consultants, construction firms and more, measuring, modelling and engineering the nation’s railways.” Source: RevenueBase Database · checked Sep 17, 2026
17	PRO Rail Services	Indirect evidence	Welwyn Garden City, United KingdomHQ checked Sep 17, 2026	11-50	58 contacts →
	Indirect evidence “Pro Rail Services has a long-term record of delivering multi-million pound projects.” Source: RevenueBase Database · checked Sep 17, 2026
18	1stinrail	Partial evidence	London, United KingdomHQ checked Sep 17, 2026	201-500	52 contacts →
	Partial evidence “1stinrail specialise in Permanent Way Engineering for all track types, from feasibility through to commissioning, and for all forms of track; we provide 24/7 planned and reactive…” Source: RevenueBase Database · checked Sep 17, 2026
19	Lundy Projects LTD	Partial evidence	Stockport, United KingdomHQ checked Sep 17, 2026	51-200	51 contacts →
	Partial evidence “Lundy Projects is an award-winning multi-disciplinary civil engineering company with an excellent reputation for delivering major signalling and OLE infrastructure projects…” Source: RevenueBase Database · checked Sep 17, 2026
20	Sonic Rail Services LTD	Indirect evidence	Burnham-on-crouch, United KingdomHQ checked Sep 17, 2026	51-200	49 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
21	FJD Consulting	Partial evidence	Birmingham, United KingdomHQ checked Sep 17, 2026	11-50	49 contacts →
	Partial evidence “FJD Consulting is an engineering design consultancy operating in the rail & transportation sectors.” Source: RevenueBase Database · checked Sep 17, 2026
22	Whitfield Consulting Services	Indirect evidence	Surbiton, United KingdomHQ checked Sep 17, 2026	51-200	43 contacts →
	Indirect evidence “At Whitfield Consulting Services we believe infrastructure requires more than just a one-off design.” Source: RevenueBase Database · checked Sep 17, 2026
23	OTB Engineering	Partial evidence	London, United KingdomHQ checked Sep 17, 2026	51-200	42 contacts →
	Partial evidence “OTB is renowned for its expertise and experience in tunnel, construction and geotechnical engineering, and rail assurance.” Source: RevenueBase Database · checked Sep 17, 2026
24	PACE	Indirect evidence	Watford, United KingdomHQ checked Sep 17, 2026	11-50	42 contacts →
	Indirect evidence “PACE has a vast experience in delivering all elements of lineside Civils and E&P for rail projects throughout the UK.” Source: RevenueBase Database · checked Sep 17, 2026
25	Haigh Rail Limited	Partial evidence	Bamber Bridge, United KingdomHQ checked Sep 17, 2026	51-200	42 contacts →
	Partial 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 17, 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: railroad engineering firms. 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 railroad engineering firms.
Partial evidence: Its own public description names part of railroad engineering firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name railroad engineering firms. 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 278 railroad engineering firms based in the United Kingdom

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Railroad engineering firms based in the United Kingdom at a glance

As of Sep 17, 2026

36.6%Verified-email coverage

23.8Average contacts per company

11-50Median size (employees)

12.6%Largest-city concentration · London

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

126

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

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 278 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 railroad engineering firms, 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 “railroad engineering firms”. 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 railroad engineering firms), 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 railroad engineering firms, 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, 2,415 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 17, 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.

Railroad engineering firms by metro

Railroad engineering firms in London35

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 railroad engineering firms, 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 railroad engineering firms are there based in the United Kingdom?

RevenueBase identified 278 railroad engineering firms 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?

Colas Rail UK, headquartered in London, tops this list with the largest team on record.

Which city has the most railroad engineering firms?

London leads with 35 headquartered companies, followed by Glasgow (9) and Derby (7).

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 2,415 verified decision-maker contacts tracked across these 278 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 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 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.