Company lists · Data refreshed September 2026
Top 25 Underground railway contractors based in the United Kingdom
RevenueBase identified 48 underground railway contractors headquartered in the United Kingdom as of September 2026 and tracks 5,843 professional contacts across them, including 1,309 with verified work emails. London is the largest hub.
This list covers underground railway 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.
The 25 largest underground railway contractors based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 803 contacts → | ||||
Partial evidence “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…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 2 | 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, 2026Thanks. The Data Team will review it. | |||||
| 3 | 487 contacts → | ||||
Partial evidence “Joseph Gallagher is one of the UK's leading Civil Engineering & Tunnelling sub-contractors that has significantly grown over the past 45 years into an international business.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 4 | 275 contacts → | ||||
Indirect evidence “Tunnelcraft Ltd is currently working for the BAM Nuttall.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 5 | 201 contacts → | ||||
Indirect evidence “TG Tunnelling is a tunnelling company based out of 2 Athenaeum Rd, London N20 9AE, United Kingdom.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 6 | 112 contacts → | ||||
Partial evidence “A E Yates Ltd is a Bolton based £100m turnover Civil Engineering & Tunnelling Contractor, established in 1870, with a long standing reputation for successfully delivering works of…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 7 | 103 contacts → | ||||
Indirect evidence “HOCHTIEF is building the world of tomorrow.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 8 | 63 contacts → | ||||
Indirect evidence “Dr.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 9 | 49 contacts → | ||||
Partial evidence “As an industry leader since 1994, Active Tunnelling is the UK’s most experienced independent Tunnelling contractor specialising in Microtunnelling, Auger Boring, Shaft Sinking…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 10 | 48 contacts → | ||||
Strong evidence “GPX Engineering Ltd is an established railway contractor specialising in providing welding resource for the railway industry, working directly for Network Rail, Transport for…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 11 | 46 contacts → | ||||
Indirect evidence “HB Tunnelling Ltd are a rapidly expanding, innovative company who provide tunnelling solutions include- Guided/Unguided Auger Boring Pipe jacking Box Jacking Shaft Sinking…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 12 | 40 contacts → | ||||
Partial evidence “Established in 2013, ASH Construction Group are a leading privately-owned, Railway Specialist supporting Railway and Civil Engineering projects across the UK with offices in Kent…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 13 | 39 contacts → | ||||
Indirect evidence “JKL are one of the UK's most recognisable names within the tunnelling and civil engineering industries.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 14 | 38 contacts → | ||||
Partial evidence “LBA is an engineering consultancy specialising in tunnelling, underground works and heavy civil engineering construction.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 15 | 35 contacts → | ||||
Partial evidence “TAG Construction Ltd is a reputable, single source labour supply contractor, with a reputation for service and quality that has provided repeat business with most of the UK's…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 16 | 27 contacts → | ||||
Strong evidence “Originated in 1829 Charles Brand had a strong track record in Tunnelling, Railway, Marine and Civils sectors having completed projects at London Underground, Ben Crom Dam at…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 17 | 18 contacts → | ||||
Partial evidence “Tunnel Engineering Ltd is an engineering and management consultancy specialising in tunnelling, shafts, underground works and heavy civil engineering construction.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 18 | 17 contacts → | ||||
Indirect evidence “hyperTunnel is the next generation in tunnelling.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 19 | 16 contacts → | ||||
Indirect evidence “Bedi Consulting offer specialist geotechnical and tunnel engineering consultancy services from design conception through to construction.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 20 | 14 contacts → | ||||
Partial evidence “Based in Tilbury, Essex, Gateway Construction Services Limited is a long established company providing services and support to the Railway Infrastructure.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 21 | 11 contacts → | ||||
Partial evidence “OCL Group operate at the forefront when delivering some of the largest civil and electrical projects in infrastructure incorporating both London Underground and Network Rail…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 22 | 8 contacts → | ||||
Partial evidence “Sacyr Neopul is part of the multidisciplinary Sacyr Group and is a leading Railway Specialist Company.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 23 | 4 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 24 | 4 contacts → | ||||
Partial evidence “Neary Rail is a Link Up approved rail contractor offering construction, building, cabling and electrical services to both heavy and light rail networks.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 25 | 3 contacts → | ||||
Indirect evidence “Tunnel Engineering Services (UK) Ltd has established an enviable reputation for the design and manufacture of tunnelling equipment for the construction industry.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
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: underground railway 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 underground railway contractors.
- Partial evidence
- Its own public description names part of underground railway contractors, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name underground railway 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 48 underground railway contractors based in the United Kingdom
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Underground railway contractors based in the United Kingdom at a glance
As of Sep 19, 2026Companies by employee count
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 48 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 underground railway 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 “underground railway 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 underground railway 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 underground railway 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, 1,309 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 underground railway 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 underground railway contractors are there based in the United Kingdom?
RevenueBase identified 48 underground railway 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?
Barhale LTD, headquartered in Walsall, tops this list with the largest team on record.
Which city has the most underground railway contractors?
London leads with 7 headquartered companies, followed by Coventry (3) and Leeds (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 1,309 verified decision-maker contacts tracked across these 48 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.
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