Company lists · Data refreshed September 2026

Top 25 Railway consulting firms based in the United Kingdom

RevenueBase identified 608 railway consulting firms headquartered in the United Kingdom as of September 2026 and tracks 10,647 professional contacts across them, including 3,774 with verified work emails and 465 with mobile numbers. London is the largest hub.

This list covers railway consulting 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 5, 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 5, 2026 86% judged on-target in blind review
608Companies
10,647Contacts tracked
3,774Verified emails
465Mobile numbers
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The 25 largest railway consulting firms based in the United Kingdom

Ranked by team size
Top 25 of 608 railway consulting firms based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 5, 2026. RevenueBase Smart Search rates how each company's information relates to railway consulting 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceLondon, United KingdomHQ checked Sep 5, 20261,001-5,000868 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 5, 2026
2Partial evidenceDoncaster, United KingdomHQ checked Sep 5, 20261,001-5,000767 contacts →

Partial 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 5, 2026
3Strong evidenceLondon, United KingdomHQ checked Sep 5, 202651-200582 contacts →

Strong evidence

“Our Rail Experts Have Transformed The Performance Of Britain’s Railway…They Can Help You Transform Yours Network Rail Consulting is the wholly owned international consultancy arm…”

Source: RevenueBase Database · checked Sep 5, 2026
4Partial evidenceStrathaven, United KingdomHQ checked Sep 5, 2026501-1,000486 contacts →

Partial evidence

“QTS is one of the country’s leading railways contractors, founded by MD, Alan McLeish.”

Source: RevenueBase Database · checked Sep 5, 2026
5Partial evidenceGlasgow, United KingdomHQ checked Sep 5, 2026201-500437 contacts →

Partial evidence

“Welcome to Fairhurst: Fairhurst is a Limited Liability Partnership (LLP) of Consulting Engineers practicing in the UK, employing circa 400 staff in 16 principal offices.”

Source: RevenueBase Database · checked Sep 5, 2026
6Indirect evidenceSalford, United KingdomHQ checked Sep 5, 202651-200286 contacts →

Indirect evidence

“The ISS Management team has over 25 years experience of delivering innovative and pro-active solutions to the rail and light-rail industry.”

Source: RevenueBase Database · checked Sep 5, 2026
7Indirect evidenceLondon, United KingdomHQ checked Sep 5, 20261,001-5,000236 contacts →

Indirect evidence

“Cleshar delivers multidisciplinary services to the rail infrastructure sector.”

Source: RevenueBase Database · checked Sep 5, 2026
8Indirect evidenceBirmingham, United KingdomHQ checked Sep 5, 20261,001-5,000186 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 5, 2026
9Partial evidenceGreenwich, United KingdomHQ checked Sep 5, 2026201-500159 contacts →

Partial evidence

“About Ontrak Recruitment and Training Ontrak Recruitment and Training is a leading temporary staffing agency dedicated to the dynamic railway industry in the United Kingdom.”

Source: RevenueBase Database · checked Sep 5, 2026
10Indirect evidenceLondon, United KingdomHQ checked Sep 5, 202651-200150 contacts →

Indirect 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 5, 2026
11Indirect evidenceColchester, United KingdomHQ checked Sep 5, 2026201-500142 contacts →

Indirect evidence

“TES Ltd is a long established, highly regarded contractor to the rail industry.”

Source: RevenueBase Database · checked Sep 5, 2026
12Indirect evidenceDoncaster, United KingdomHQ checked Sep 5, 2026201-500141 contacts →

Indirect 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 5, 2026
13Indirect evidenceBirmingham, United KingdomHQ checked Sep 5, 202611-50115 contacts →

Indirect evidence

“At SLC Rail we help government bodies, developers and TOCs to form visionary rail strategies, develop successful rail schemes and manage project delivery.”

Source: RevenueBase Database · checked Sep 5, 2026
14Partial evidenceLondon, United KingdomHQ checked Sep 5, 202651-200113 contacts →

Partial evidence

“CampbellReith is an independent firm of consulting engineers providing structural, civil, geotechnical, land quality, development planning and transport planning services.”

Source: RevenueBase Database · checked Sep 5, 2026
15Indirect evidenceDerby, United KingdomHQ checked Sep 5, 202651-200111 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 5, 2026
16Indirect evidenceLondon, United KingdomHQ checked Sep 5, 202651-200108 contacts →

Indirect 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 5, 2026
17Partial evidenceLondon, United KingdomHQ checked Sep 5, 202651-20096 contacts →

Partial evidence

“Founded in 2005, Ardent Consulting Engineers provide transport and infrastructure planning and engineering advice to the property and land development industry.”

Source: RevenueBase Database · checked Sep 5, 2026
18Strong evidenceBradley Stoke, United KingdomHQ checked Sep 5, 202651-20096 contacts →

Strong 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 5, 2026
19Indirect evidenceRamsgate, United KingdomHQ checked Sep 5, 202651-20088 contacts →

Indirect evidence

“ABOUT US: Transport Investigations has over eighteen years’ experience of innovation in supporting Train Operating Companies in developing smarter strategies for specialised areas…”

Source: RevenueBase Database · checked Sep 5, 2026
20Indirect evidenceDerby, United KingdomHQ checked Sep 5, 202651-20079 contacts →

Indirect evidence

“AEGIS is a member of the IKOS Group, a global consultancy business with its Headquarters in Paris, France.”

Source: RevenueBase Database · checked Sep 5, 2026
21Indirect evidenceOldham, United KingdomHQ checked Sep 5, 2026201-50076 contacts →

Indirect 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 5, 2026
22Indirect evidenceChesterfield, United KingdomHQ checked Sep 5, 202651-20072 contacts →

Indirect 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 5, 2026
23Partial evidenceLondon, United KingdomHQ checked Sep 5, 202651-20067 contacts →

Partial evidence

“Transport Consulting & Advisory is an independent global multi-modal transport sector strategy consultancy, transforming our clients’ businesses through transport planning…”

Source: RevenueBase Database · checked Sep 5, 2026
24Indirect evidenceDerby, United KingdomHQ checked Sep 5, 202651-20066 contacts →

Indirect evidence

“DB ESG, established in 1995, is a specialist provider of rolling stock engineering solutions for the UK rail industry.”

Source: RevenueBase Database · checked Sep 5, 2026
25Partial evidenceMiddlesbrough, United KingdomHQ checked Sep 5, 202651-20065 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 5, 2026

Showing 25 of 608 railway consulting firms based in the United Kingdom

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Railway consulting firms based in the United Kingdom at a glance

As of Sep 5, 2026
35.4%Verified-email coverage
4.4%Mobile-number coverage
17.5Average contacts per company
1-10Median size (employees)
20.4%Largest-city concentration · London
Sep 5, 2026Page data refreshed

Companies by employee count

1-10
327
11-50
169
51-200
81
201-500
17
501-1,000
4
1,001-5,000
7
5,001-10,000
1

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

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 railway consulting 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 “railway consulting 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 railway consulting 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 railway consulting 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, 3,774 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 5, 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 railway consulting 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 railway consulting firms are there based in the United Kingdom?

RevenueBase identified 608 railway consulting 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 railway consulting firms?

London leads with 124 headquartered companies, followed by Derby (30) and Manchester (13).

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 3,774 verified decision-maker contacts tracked across these 608 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 5, 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.