Company lists · Data refreshed September 2026

Top 25 Modular green building companies based in the United Kingdom

Name: Modular green building 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 308 companies tracked

RevenueBase identified 308 modular green building companies headquartered in the United Kingdom as of September 2026 and tracks 4,613 professional contacts across them, including 2,018 with verified work emails. London is the largest hub.

This list covers modular green building companies 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 17, 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 17, 2026 86% judged on-target in blind review

308Companies

4,613Contacts tracked

2,018Verified emails

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The 25 largest modular green building companies based in the United Kingdom

Ranked by team size

Top 25 of 308 modular green building companies based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to modular green building companies: 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	Portakabin	Partial evidence	York, United KingdomHQ checked Sep 17, 2026	1,001-5,000	1,206 contacts →
	Partial evidence “An industry leading modular and offsite construction specialist operating across ten European countries; England, Wales, Scotland, Northern Ireland, Republic of Ireland, France…” Source: RevenueBase Database · checked Sep 17, 2026
2	Algeco UK	Partial evidence	Stockton-on-tees, United KingdomHQ checked Sep 17, 2026	1,001-5,000	712 contacts →
	Partial evidence “Algeco is the leading modular accommodation brand in Europe, offering a wealth of expertise in designing and delivering temporary and permanent accommodation solutions for a range…” Source: RevenueBase Database · checked Sep 17, 2026
3	Premier Modular	Partial evidence	Brandesburton, United KingdomHQ checked Sep 17, 2026	201-500	268 contacts →
	Partial evidence “Since 1956, Premier Modular has provided sustainable spaces for people to live, learn, work and take care of others to enable a better tomorrow for generations to come.” Source: RevenueBase Database · checked Sep 17, 2026
4	Reds10	Indirect evidence	London, United KingdomHQ checked Sep 17, 2026	201-500	256 contacts →
	Indirect evidence “At Reds10, we are redefining construction for the modern world.” Source: RevenueBase Database · checked Sep 17, 2026
5	Mcavoy	Strong evidence	Knockmore Hill, United KingdomHQ checked Sep 17, 2026	51-200	153 contacts →
	Strong evidence “McAvoy is one of the UK and Ireland’s market leaders in the precision manufacture and delivery of temporary and permanent modular buildings.” Source: RevenueBase Database · checked Sep 17, 2026
6	Howells	Indirect evidence	Birmingham, United KingdomHQ checked Sep 17, 2026	51-200	123 contacts →
	Indirect evidence “We’re an ambitious group of architects, designers and makers working throughout the UK and internationally.” Source: RevenueBase Database · checked Sep 17, 2026
7	Innovaré Offsite Limited	Indirect evidence	Coventry, United KingdomHQ checked Sep 17, 2026	51-200	77 contacts →
	Indirect evidence “Innovaré Offsite is an Offsite specialist delivering #LowcarbonFireSafe structural solutions.” Source: RevenueBase Database · checked Sep 17, 2026
8	Tophat	Partial evidence	London, United KingdomHQ checked Sep 17, 2026	501-1,000	75 contacts →
	Partial evidence “The UK’s leader in technology-driven modular housing manufacturing Can you achieve your career goals with TopHat?” Source: RevenueBase Database · checked Sep 17, 2026
9	Portable Offices Hire Limited	Indirect evidence	Deeside, United KingdomHQ checked Sep 17, 2026	51-200	67 contacts →
	Indirect evidence “At Portable Offices, we help organisations create the space they need to operate, grow and serve their communities.” Source: RevenueBase Database · checked Sep 17, 2026
10	ESS Modular	Partial evidence	London, United KingdomHQ checked Sep 17, 2026	201-500	64 contacts →
	Partial evidence “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.” Source: RevenueBase Database · checked Sep 17, 2026
11	JRL Modular	Partial evidence	Newark, United KingdomHQ checked Sep 17, 2026	201-500	64 contacts →
	Partial evidence “JRL Modular is part of the JRL Group.” Source: RevenueBase Database · checked Sep 17, 2026
12	Northstone	Indirect evidence	Salford, United KingdomHQ checked Sep 17, 2026	11-50	56 contacts →
	Indirect evidence “We’ve created new, super efficient homes with brighter rooms, bigger windows, higher ceilings and truly open-plan living.” Source: RevenueBase Database · checked Sep 17, 2026
13	Rollalong LTD	Partial evidence	Wimborne, United KingdomHQ checked Sep 17, 2026	51-200	54 contacts →
	Partial evidence “Rollalong Ltd is a leading modular and offsite construction manufacturing company based in Dorset.” Source: RevenueBase Database · checked Sep 17, 2026
14	British Offsite Limited	Partial evidence	Braintree, United KingdomHQ checked Sep 17, 2026	51-200	48 contacts →
	Partial evidence “British Offsite is a highly advanced manufacturing and construction company specialising in the design and production of superstructure and interior fit modular construction…” Source: RevenueBase Database · checked Sep 17, 2026
15	Fasthouse	Partial evidence	Co Derry, United KingdomHQ checked Sep 17, 2026	51-200	46 contacts →
	Partial evidence “Established in 2015, FastHouse designs, manufactures and installs high-performance housing and prefabricated timber frame panelised building systems.” Source: RevenueBase Database · checked Sep 17, 2026
16	KES Group	Indirect evidence	Strabane, United KingdomHQ checked Sep 17, 2026	51-200	33 contacts →
	Indirect evidence “KES Group brings together engineering expertise, advanced manufacturing and project delivery under one roof.” Source: RevenueBase Database · checked Sep 17, 2026
17	P Mcvey Building Systems	Strong evidence	Toomebridge, United KingdomHQ checked Sep 17, 2026	51-200	31 contacts →
	Strong evidence “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…” Source: RevenueBase Database · checked Sep 17, 2026
18	Lighthouse	Indirect evidence	Sheffield, United KingdomHQ checked Sep 17, 2026	51-200	31 contacts →
	Indirect evidence “Lighthouse was founded in 2020 with a bold vision: to revolutionise housebuilding and usher in a new era of quality, sustainability and speed.” Source: RevenueBase Database · checked Sep 17, 2026
19	Ideal Building Systems LTD	Strong evidence	Bridlington, United KingdomHQ checked Sep 17, 2026	51-200	30 contacts →
	Strong evidence “Ideal Building Systems are an independent family owned company with many years of experience in the modular building industry.” Source: RevenueBase Database · checked Sep 17, 2026
20	The Halo Group	Partial evidence	Wandsworth Town, United KingdomHQ checked Sep 17, 2026	11-50	28 contacts →
	Partial evidence “At The Halo Group, we design and build modular structures.” Source: RevenueBase Database · checked Sep 17, 2026
21	Starship	Indirect evidence	Ellesmere Port, United KingdomHQ checked Sep 17, 2026	11-50	28 contacts →
	Indirect evidence “Starship is an award-winning industrialised construction business creating some of the UK’s most innovative places to live, stay and work.” Source: RevenueBase Database · checked Sep 17, 2026
22	Etopia	Partial evidence	London, United KingdomHQ checked Sep 17, 2026	11-50	26 contacts →
	Partial evidence “Sustainable Building Innovation.” Source: RevenueBase Database · checked Sep 17, 2026
23	Smart Modular Buildings	Strong evidence	Bury St Edmunds, United KingdomHQ checked Sep 17, 2026	51-200	24 contacts →
	Strong evidence “Visit our website for find out more about our garden rooms, offices, studios, living spaces and modular commercial buildings.” Source: RevenueBase Database · checked Sep 17, 2026
24	MAKAR	Partial evidence	Inverness, United KingdomHQ checked Sep 17, 2026	11-50	23 contacts →
	Partial evidence “MAKAR Ltd is a timber engineering, building design, manufacture and delivery company, established in 2002.” Source: RevenueBase Database · checked Sep 17, 2026
25	My-Fab	Partial evidence	Lodge Farm Industrial Estate, United KingdomHQ checked Sep 17, 2026	51-200	20 contacts →
	Partial evidence “MY Fab specialises in creating and delivering innovative modular technology, created in a controlled factory environment that shortens construction time and saves substantially on…” Source: RevenueBase Database · checked Sep 17, 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: modular green building companies. 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 modular green building companies.
Partial evidence: Its own public description names part of modular green building companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name modular green building companies. 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 308 modular green building companies based in the United Kingdom

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Modular green building companies based in the United Kingdom at a glance

As of Sep 17, 2026

43.7%Verified-email coverage

15.0Average contacts per company

1-10Median size (employees)

14.6%Largest-city concentration · London

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

160

11-50

102

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 308 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 modular green building companies, 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 “modular green building companies”. 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 modular green building companies), 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 modular green building companies, 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, 2,018 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 17, 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.

Modular green building companies by metro

Modular green building companies in London45

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 modular green building companies, 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 modular green building companies are there based in the United Kingdom?

RevenueBase identified 308 modular green building companies 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?

Portakabin, headquartered in York, tops this list with the largest team on record.

Which city has the most modular green building companies?

London leads with 45 headquartered companies, followed by Hull (6) and Manchester (6).

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 2,018 verified decision-maker contacts tracked across these 308 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 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 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.