Company lists · Data refreshed September 2026

Top 25 Offsite construction companies based in the United Kingdom

Name: Offsite construction companies 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 248 companies tracked

RevenueBase identified 248 company matches for offsite construction companies associated with the United Kingdom as of September 2026 and tracks 4,740 professional contacts across them, including 2,090 with verified work emails. London is the largest hub.

This list covers company matches for offsite construction companies associated with the United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 17, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 17, 2026 How this list was built

248Companies

4,740Contacts tracked

2,090Verified emails

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The 25 largest offsite construction companies based in the United Kingdom

Ranked by team size

Top 25 of 248 company matches for offsite construction companies based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 17, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Portakabin	Exact match	York, United KingdomHQ recorded Sep 17, 2026	1,001-5,000	1,206 contacts →
	Exact match “An industry leading modular and offsite construction specialist operating across ten European countries; England, Wales, Scotland, Northern Ireland, Republic of Ireland, France…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
2	Alternative Heat LTD	Exact match	Banbridge, United KingdomHQ recorded Sep 17, 2026	501-1,000	268 contacts →
	Exact match “With over 20 years of experience within the Commercial Offsite Fabrication industry, Alternative Heat have established themselves as a market leader in this sector.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
3	MERIT	Exact match	Cramlington, United KingdomHQ recorded Sep 17, 2026	n/a	261 contacts →
	Exact match “Merit is the UK’s leading offsite construction and manufacturing specialist.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
4	Reds10	Exact match	London, United KingdomHQ recorded Sep 17, 2026	201-500	256 contacts →
	Exact match “At Reds10, we are redefining construction for the modern world.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
5	Hadley Group	Exact match	Smethwick, United KingdomHQ recorded Sep 17, 2026	501-1,000	227 contacts →
	Exact match “We are a market-leading, globally active business built on engineering excellence, innovation in structural building performance and cold roll forming technology, with a…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
6	Mcavoy	Exact match	Knockmore Hill, United KingdomHQ recorded Sep 17, 2026	51-200	153 contacts →
	Exact match “McAvoy is one of the UK and Ireland’s market leaders in the precision manufacture and delivery of temporary and permanent modular buildings.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
7	Donaldson Timber Systems	Exact match	Westhill, United KingdomHQ recorded Sep 17, 2026	201-500	119 contacts →
	Exact match “Donaldson Timber Systems, a Donaldson Family Company, is the UK’s leading offsite timber systems manufacturer.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
8	PCE Limited	Exact match	Tamworth, United KingdomHQ recorded Sep 17, 2026	51-200	112 contacts →
	Exact match “PCE are pioneers in offsite system build solutions, with expertise across design, manufacture, and construction.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
9	Innovaré Offsite Limited	Exact match	Coventry, United KingdomHQ recorded Sep 17, 2026	51-200	77 contacts →
	Exact match “Innovaré Offsite is an Offsite specialist delivering #LowcarbonFireSafe structural solutions.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
10	Tophat	Exact match	London, United KingdomHQ recorded Sep 17, 2026	501-1,000	75 contacts →
	Exact match “The UK’s leader in technology-driven modular housing manufacturing Can you achieve your career goals with TopHat?” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
11	ESS Modular	Exact match	London, United KingdomHQ recorded Sep 17, 2026	201-500	64 contacts →
	Exact match “With over 25 years in the industry, ESS is a leading provider of modular products, focusing on off-site solutions for clients in the public and private sectors.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
12	JRL Modular	Exact match	Newark, United KingdomHQ recorded Sep 17, 2026	201-500	64 contacts →
	Exact match “JRL Modular is part of the JRL Group.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
13	Integra Buildings Limited	Exact match	Paull, United KingdomHQ recorded Sep 17, 2026	51-200	61 contacts →
	Exact match “We’re a multi award-winning designer and manufacturer of innovative, offsite modular buildings and anti-vandal solutions.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
14	Mansell Building Solutions	Exact match	Chadderton, United KingdomHQ recorded Sep 17, 2026	201-500	57 contacts →
	Exact match “Established in 1992, we’re one of the UK’s longest established and most experienced specialist contractors in our field.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
15	Rollalong LTD	Exact match	Wimborne, United KingdomHQ recorded Sep 17, 2026	51-200	54 contacts →
	Exact match “Rollalong Ltd is a leading modular and offsite construction manufacturing company based in Dorset.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
16	British Offsite Limited	Exact match	Braintree, United KingdomHQ recorded Sep 17, 2026	51-200	48 contacts →
	Exact match “British Offsite is a highly advanced manufacturing and construction company specialising in the design and production of superstructure and interior fit modular construction…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
17	TIDE	Exact match	London, United KingdomHQ recorded Sep 17, 2026	51-200	46 contacts →
	Exact match “Tide and Vision are world leaders in volumetric construction.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
18	Fasthouse	Exact match	Co Derry, United KingdomHQ recorded Sep 17, 2026	51-200	46 contacts →
	Exact match “Established in 2015, FastHouse designs, manufactures and installs high-performance housing and prefabricated timber frame panelised building systems.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
19	BRG Technologies	Exact match	Cheltenham, United KingdomHQ recorded Sep 17, 2026	51-200	46 contacts →
	Exact match “BRG Technologies is the global leader in the off-site construction of mission-critical facilities, specialising in the data centre and healthcare sectors.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
20	Space4	Exact match	Birmingham, United KingdomHQ recorded Sep 17, 2026	51-200	43 contacts →
	Exact match “Space4 is the offsite manufacturing arm of Persimmon Homes, delivering advanced timber frame solutions that drive efficiency, quality and sustainability across our developments.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
21	KES Group	Exact match	Strabane, United KingdomHQ recorded Sep 17, 2026	51-200	33 contacts →
	Exact match “KES Group brings together engineering expertise, advanced manufacturing and project delivery under one roof.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
22	P Mcvey Building Systems	Exact match	Toomebridge, United KingdomHQ recorded Sep 17, 2026	51-200	31 contacts →
	Exact match “P McVey Building Systems: Leading the Way in Modular and Offsite Construction Solutions With over 40 years of experience, P McVey Building Systems has become a trusted leader in…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
23	Lighthouse	Exact match	Sheffield, United KingdomHQ recorded Sep 17, 2026	51-200	31 contacts →
	Exact match “Lighthouse was founded in 2020 with a bold vision: to revolutionise housebuilding and usher in a new era of quality, sustainability and speed.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
24	Ideal Building Systems LTD	Exact match	Bridlington, United KingdomHQ recorded Sep 17, 2026	51-200	30 contacts →
	Exact match “Ideal Building Systems are an independent family owned company with many years of experience in the modular building industry.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
25	Automated Architecture Auar	Exact match	London, United KingdomHQ recorded Sep 17, 2026	11-50	30 contacts →
	Exact match “AUAR is the manufacturing partner for homebuilders.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “offsite construction companies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 248 offsite construction companies based in the United Kingdom

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Offsite construction companies based in the United Kingdom at a glance

As of Sep 17, 2026

44.1%Verified-email coverage

19.1Average contacts per company

11-50Median size (employees)

11.3%Largest-city concentration · London

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

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 248 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with the United Kingdom whose business descriptions match “offsite construction companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 2,090 professional contacts with verified work emails across the full matched dataset. 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.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “offsite construction companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many offsite construction companies are there based in the United Kingdom?

RevenueBase identified 248 company matches for offsite construction companies associated with the United Kingdom as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Portakabin tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most offsite construction companies?

London leads with 28 company records, followed by Hull (7) and Leeds (4).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 2,090 professional contacts with verified work emails tracked across these 248 companies; direct dials are available where recorded.

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 SmartSearch, 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.