Company lists · Data refreshed September 2026

Top 25 Build-to-suit developers based in the United Kingdom

Name: Build-to-suit developers 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 1,169 companies tracked

RevenueBase identified 1,169 build-to-suit developers headquartered in the United Kingdom as of September 2026 and tracks 11,452 professional contacts across them, including 3,687 with verified work emails. London is the largest hub.

This list covers build-to-suit developers 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

1,169Companies

11,452Contacts tracked

3,687Verified emails

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The 25 largest build-to-suit developers based in the United Kingdom

Ranked by team size

Top 25 of 1,169 build-to-suit developers 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 build-to-suit developers: 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	TSL	Indirect evidence	Gerrards Cross, United KingdomHQ checked Sep 19, 2026	501-1,000	734 contacts →
	Indirect evidence “TSL is a leader in technical construction, operating across EMEA, the Americas and APAC.” Source: RevenueBase Database · checked Sep 19, 2026
2	Winvic Construction LTD	Partial evidence	Northampton, United KingdomHQ checked Sep 19, 2026	201-500	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 19, 2026
3	Ardmore Group	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	201-500	562 contacts →
	Indirect evidence “We are a privately-owned, family operated main contractor established in 1974.” Source: RevenueBase Database · checked Sep 19, 2026
4	Montway LTD	Partial evidence	Waltham Cross, United KingdomHQ checked Sep 19, 2026	n/a	509 contacts →
	Partial evidence “Design & Build Construction Company” Source: RevenueBase Database · checked Sep 19, 2026
5	Osborne	Indirect evidence	Reigate, United KingdomHQ checked Sep 19, 2026	n/a	343 contacts →
	Indirect evidence “Osborne was one of the UK’s leading family owned construction businesses.” Source: RevenueBase Database · checked Sep 19, 2026
6	JCA Engineering	Indirect evidence	Stevenage, United KingdomHQ checked Sep 19, 2026	201-500	237 contacts →
	Indirect evidence “JCA is a multi-faceted engineering services and construction business.” Source: RevenueBase Database · checked Sep 19, 2026
7	Knight Harwood	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	146 contacts →
	Indirect evidence “We turn visions into reality.” Source: RevenueBase Database · checked Sep 19, 2026
8	Russell Wbho	Indirect evidence	Manchester, United KingdomHQ checked Sep 19, 2026	51-200	121 contacts →
	Indirect evidence “A comprehensive, full service main contractor, Russell WBHO works across all sectors, providing expert advice and project delivery, from land acquisition and design consultancy…” Source: RevenueBase Database · checked Sep 19, 2026
9	Odgroup	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	100 contacts →
	Indirect 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 19, 2026
10	Magrock	Indirect evidence	West Malling, United KingdomHQ checked Sep 19, 2026	51-200	99 contacts →
	Indirect 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 19, 2026
11	Workplace Creations	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	94 contacts →
	Partial evidence “We are an award-winning Design & Build contractor specialising in commercial interiors and consultancy.” Source: RevenueBase Database · checked Sep 19, 2026
12	MYCO	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	85 contacts →
	Indirect evidence “Myco Contracts Ltd are a multi-faceted Construction Company with all the skills you need under one roof.” Source: RevenueBase Database · checked Sep 19, 2026
13	Uplands Construction LTD	Indirect evidence	Emersons Green, United KingdomHQ checked Sep 19, 2026	51-200	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 19, 2026
14	Concorde BGW Group	Partial evidence	Doncaster, United KingdomHQ checked Sep 19, 2026	51-200	79 contacts →
	Partial evidence “We are award-winning design and build specialists producing outstanding projects in a variety of buildings throughout the UK, Channel Islands and internationally.” Source: RevenueBase Database · checked Sep 19, 2026
15	ANT Yapi UK Limited	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	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 19, 2026
16	ROOFF	Partial evidence	Barking, United KingdomHQ checked Sep 19, 2026	51-200	72 contacts →
	Partial evidence “We are a general main building contractor whose activities include traditional building, design and build, and construction management for the public and private sectors.” Source: RevenueBase Database · checked Sep 19, 2026
17	Westgreen Construction	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	70 contacts →
	Partial evidence “Since formation in Westgreen have developed a reputation for our ability to deliver a high-quality bespoke service.” Source: RevenueBase Database · checked Sep 19, 2026
18	ADT Workplace	Indirect evidence	Greenside Way, United KingdomHQ checked Sep 19, 2026	51-200	67 contacts →
	Indirect evidence “At ADT Workplace, we excel in creating inspiring office spaces for businesses of all sizes.” Source: RevenueBase Database · checked Sep 19, 2026
19	Griggs	Indirect evidence	Borehamwood, United KingdomHQ checked Sep 19, 2026	11-50	58 contacts →
	Indirect evidence “GRIGGS was established in 1968 as John E.” Source: RevenueBase Database · checked Sep 19, 2026
20	Cocksedge Building Contractors Limited	Partial evidence	Postwick, United KingdomHQ checked Sep 19, 2026	51-200	47 contacts →
	Partial 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 19, 2026
21	MBH Design Studio LTD	Indirect evidence	West Byfleet, United KingdomHQ checked Sep 19, 2026	11-50	46 contacts →
	Indirect evidence “Our purpose is to deliver projects faster than anybody else without compromise.” Source: RevenueBase Database · checked Sep 19, 2026
22	RSR	Indirect evidence	Milton Keynes, United KingdomHQ checked Sep 19, 2026	51-200	43 contacts →
	Indirect evidence “For more than 20 years, RSR has been supporting many great companies with office design, construction and maintenance projects, creating inspirational workplaces that motivate…” Source: RevenueBase Database · checked Sep 19, 2026
23	KEY Property Solutions LTD	Indirect evidence	Belper, United KingdomHQ checked Sep 19, 2026	51-200	43 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
24	Headoffice3	Indirect evidence	Leeds, United KingdomHQ checked Sep 19, 2026	51-200	43 contacts →
	Indirect evidence “Welcome to headoffice3, specialists in complex and time-critical construction projects, and especially office-to-residential conversions.” Source: RevenueBase Database · checked Sep 19, 2026
25	TEC Construction LTD	Indirect evidence	Plymouth, United KingdomHQ checked Sep 19, 2026	11-50	43 contacts →
	Indirect evidence “As one of the South West’s leading construction contractors, with over 30 years of experience in delivering construction change by enhancing communities and supporting business…” 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: build-to-suit developers. 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 build-to-suit developers.
Partial evidence: Its own public description names part of build-to-suit developers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name build-to-suit developers. 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 1,169 build-to-suit developers based in the United Kingdom

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Build-to-suit developers based in the United Kingdom at a glance

As of Sep 19, 2026

32.2%Verified-email coverage

9.8Average contacts per company

1-10Median size (employees)

21.0%Largest-city concentration · London

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

597

11-50

446

51-200

201-500

501-1,000

1,001-5,000

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 1,169 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 build-to-suit developers, 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 “build-to-suit developers”. 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 build-to-suit developers), 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 build-to-suit developers, 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, 3,687 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.

Build-to-suit developers by metro

Build-to-suit developers in London245

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 build-to-suit developers, 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 build-to-suit developers are there based in the United Kingdom?

RevenueBase identified 1,169 build-to-suit developers 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?

TSL, headquartered in Gerrards Cross, tops this list with the largest team on record.

Which city has the most build-to-suit developers?

London leads with 245 headquartered companies, followed by Manchester (24) and Bristol (14).

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 3,687 verified decision-maker contacts tracked across these 1,169 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.