Company lists · Data refreshed September 2026
Top 25 General contractors based in the United Kingdom
RevenueBase identified 1,599 general contractors headquartered in the United Kingdom as of September 2026 and tracks 10,622 professional contacts across them, including 3,460 with verified work emails. London is the largest hub.
This list covers general 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 15, 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 general contractors based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 647 contacts → | ||||
Partial evidence “Formed in 2001, Winvic Construction Ltd is a leading main contractor that specialises in the design, build and fit-out of industrial, multi-room and commercial projects, and the…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 2 | 562 contacts → | ||||
Partial evidence “We are a privately-owned, family operated main contractor established in 1974.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 3 | 509 contacts → | ||||
Indirect evidence “Design & Build Construction Company” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 4 | 152 contacts → | ||||
Partial evidence “Canary Wharf Contractors Ltd (CWCL) manages and delivers all of Canary Wharf Group’s construction projects in an integrated Project Manager/Main Contractor basis.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 5 | 146 contacts → | ||||
Indirect evidence “We turn visions into reality.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 6 | 113 contacts → | ||||
Indirect evidence “Ashe Construction is part of the Ashe Group and is a regional construction company operating from our head office in Hertfordshire.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 7 | 102 contacts → | ||||
Indirect evidence “E G Carter & Co Ltd are a multi regional construction company with offices spread throughout the Midlands and South West.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 8 | 100 contacts → | ||||
Partial evidence “ODGroup is a main contractor that brings projects to life with integrated, high-quality design, project management and construction.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 9 | 99 contacts → | ||||
Partial evidence “Established in 2016, Magrock has rapidly grown into one of the Uk’s most trusted contractors, a reputation earned by doing things differently.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 10 | 95 contacts → | ||||
Indirect evidence “What began as a small family-run business in 2007 has grown into one of the most trusted names in the industry.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 11 | 94 contacts → | ||||
Indirect evidence “Our vision at CG Fry & Son is to provide a quality service to all our customers across our range of services.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 12 | 86 contacts → | ||||
Indirect evidence “CHAP Group is one of Scotland's leading privately owned construction groups with an inspiring heritage dating back to 1976.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 13 | 86 contacts → | ||||
Indirect evidence “Since our foundation in 1972, OHMG has emerged as a pioneering, chartered construction firm, celebrated for its excellence across Ireland.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 14 | 85 contacts → | ||||
Indirect evidence “Rose Builders is led by a highly experienced, hands-on management team with a passion for delivering high-quality projects and exceptional outcomes for clients.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 15 | 84 contacts → | ||||
Indirect evidence “We offer a unique, flexible and integrated service which appeals to a large range of clients and projects, whatever their scale, complexity or industry sector.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 16 | 82 contacts → | ||||
Partial evidence “Faithdean Plc has built an excellent reputation as a trusted and established main contractor based in the South East.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 17 | 80 contacts → | ||||
Indirect evidence “The AT Jones Group is a leading subcontractor company, consisting of two divisions: AT Jones and AT Jones Facades.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 18 | 74 contacts → | ||||
Indirect evidence “ANT YAPI (UK) LIMITED is a construction company based out of 1 Knightsbridge Green, 5th-floor office 5.48, SW1X 7QA, LONDON, United Kingdom.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 19 | 70 contacts → | ||||
Indirect evidence “Since formation in Westgreen have developed a reputation for our ability to deliver a high-quality bespoke service.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 20 | 65 contacts → | ||||
Partial evidence “KCL undertake a wide range of civil engineering and industrial building projects nationwide both as a Subcontractor and Principal Contractor including Design and Construct…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 21 | 58 contacts → | ||||
Indirect evidence “GRIGGS was established in 1968 as John E.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 22 | 49 contacts → | ||||
Indirect evidence “Our company was founded in East London in 2004.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 23 | 47 contacts → | ||||
Indirect evidence “Our expertise covers commercial and industrial buildings, the refurbishment and renovation of listed buildings, community builds, universities, colleges, schools, social housing…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 24 | 46 contacts → | ||||
Indirect evidence “Knight Build, established in 1994, specialises in delivering some of the UK’s most challenging and prestigious projects.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 25 | 44 contacts → | ||||
Indirect evidence “Established in 1877 and based in Kent, we have expertise across all construction sectors and are proud of what we do.” Source: RevenueBase Database · checked Sep 15, 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: general 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 general contractors.
- Partial evidence
- Its own public description names part of general contractors, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name general 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 1,599 general contractors based in the United Kingdom
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General contractors based in the United Kingdom at a glance
As of Sep 15, 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 1,599 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 general 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 “general 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 general 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 general 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, 3,460 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 15, 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.
General contractors by metro
- General contractors in London325
- General contractors in Manchester29
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 general 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 general contractors are there based in the United Kingdom?
RevenueBase identified 1,599 general 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?
Winvic Construction LTD, headquartered in Northampton, tops this list with the largest team on record.
Which city has the most general contractors?
London leads with 325 headquartered companies, followed by Manchester (29) and Birmingham (16).
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 3,460 verified decision-maker contacts tracked across these 1,599 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 15, 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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