Company lists · Data refreshed September 2026

Top 25 Office building developers based in the United Kingdom

Name: Office building 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 17, 2026 747 companies tracked

RevenueBase identified 747 office building developers headquartered in the United Kingdom as of September 2026 and tracks 13,128 professional contacts across them, including 3,682 with verified work emails. London is the largest hub.

This list covers office building 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 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

747Companies

13,128Contacts tracked

3,682Verified emails

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The 25 largest office building developers based in the United Kingdom

Ranked by team size

Top 25 of 747 office building developers 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 office building 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	Workman LLP	Partial evidence	London, United KingdomHQ checked Sep 17, 2026	501-1,000	1,034 contacts →
	Partial evidence “We're Workman – the UK's largest independent property management and building consultancy specialist.” Source: RevenueBase Database · checked Sep 17, 2026
2	MACRO	Indirect evidence	London, United KingdomHQ checked Sep 17, 2026	501-1,000	659 contacts →
	Indirect evidence “Macro Group is a global facilities management and workplace services provider, supporting organisations to deliver high-performing, experience led workplaces across complex real…” Source: RevenueBase Database · checked Sep 17, 2026
3	Osborne	Indirect evidence	Reigate, United KingdomHQ checked Sep 17, 2026	n/a	343 contacts →
	Indirect evidence “Osborne was one of the UK’s leading family owned construction businesses.” Source: RevenueBase Database · checked Sep 17, 2026
4	BW Workplace Experts	Indirect evidence	London, United KingdomHQ checked Sep 17, 2026	201-500	277 contacts →
	Indirect evidence “We’re BW, Workplace Experts, and we believe work spaces matters.” Source: RevenueBase Database · checked Sep 17, 2026
5	JCA Engineering	Indirect evidence	Stevenage, United KingdomHQ checked Sep 17, 2026	201-500	237 contacts →
	Indirect evidence “JCA is a multi-faceted engineering services and construction business.” Source: RevenueBase Database · checked Sep 17, 2026
6	Barker Associates	Indirect evidence	Braintree, United KingdomHQ checked Sep 17, 2026	51-200	122 contacts →
	Indirect evidence “Barker is a property and construction consultancy that designs, creates and manages inspiring, sustainable spaces where people live, learn, work and play.” Source: RevenueBase Database · checked Sep 17, 2026
7	Mountjoy	Partial evidence	Portsmouth, United KingdomHQ checked Sep 17, 2026	201-500	121 contacts →
	Partial evidence “Mountjoy provides professional and high quality construction, refurbishment, building maintenance and facilities management services.” Source: RevenueBase Database · checked Sep 17, 2026
8	J Tomlinson Limited	Partial evidence	Nottingham, United KingdomHQ checked Sep 17, 2026	201-500	113 contacts →
	Partial evidence “J Tomlinson is a company built on strong foundations, with a substantial heritage and a wealth of experience in delivering integrated building solutions, from design and build…” Source: RevenueBase Database · checked Sep 17, 2026
9	Broadgate Estates	Indirect evidence	London, United KingdomHQ checked Sep 17, 2026	201-500	103 contacts →
	Indirect evidence “Broadgate Estates is a leading property consultancy and management company in the UK, with a reputation for service excellence, placemaking and delivering management services…” Source: RevenueBase Database · checked Sep 17, 2026
10	Workplace Creations	Indirect evidence	London, United KingdomHQ checked Sep 17, 2026	51-200	94 contacts →
	Indirect evidence “We are an award-winning Design & Build contractor specialising in commercial interiors and consultancy.” Source: RevenueBase Database · checked Sep 17, 2026
11	TMT	Indirect evidence	Stockport, United KingdomHQ checked Sep 17, 2026	11-50	84 contacts →
	Indirect evidence “TMT deliver high quality workplaces across a broad range of Clients.” Source: RevenueBase Database · checked Sep 17, 2026
12	Simons Group LTD	Indirect evidence	Lincoln, United KingdomHQ checked Sep 17, 2026	201-500	82 contacts →
	Indirect evidence “Established in 1944, Simons Group has been offering property solutions tailored to our customer’s needs for over 70 years.” Source: RevenueBase Database · checked Sep 17, 2026
13	COEL	Partial evidence	Cambridge, United KingdomHQ checked Sep 17, 2026	51-200	81 contacts →
	Partial evidence “Office and Laboratory Design and Build Company.” Source: RevenueBase Database · checked Sep 17, 2026
14	Concorde BGW Group	Partial evidence	Doncaster, United KingdomHQ checked Sep 17, 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 17, 2026
15	Newflex	Partial evidence	London, United KingdomHQ checked Sep 17, 2026	51-200	78 contacts →
	Partial evidence “NewFlex delivers and manages a range of branded solutions for every type of building, in every type of location, for every type of occupier.” Source: RevenueBase Database · checked Sep 17, 2026
16	KITT	Partial evidence	London, United KingdomHQ checked Sep 17, 2026	51-200	77 contacts →
	Partial evidence “Kitt manages workspaces for companies that want an office worth leaving home for.” Source: RevenueBase Database · checked Sep 17, 2026
17	Citibase	Strong evidence	London, United KingdomHQ checked Sep 17, 2026	51-200	77 contacts →
	Strong evidence “Providing businesses and people with freedom from expensive offices – providing building owners the freedom to generate cash from second hand buildings.” Source: RevenueBase Database · checked Sep 17, 2026
18	Incendium Consulting	Indirect evidence	London, United KingdomHQ checked Sep 17, 2026	11-50	72 contacts →
	Indirect evidence “Helping businesses achieve their outcomes We help corporate real estate leaders transform performance through market-leading benchmarking, data-enabled insights, and practical…” Source: RevenueBase Database · checked Sep 17, 2026
19	ADT Workplace	Partial evidence	Greenside Way, United KingdomHQ checked Sep 17, 2026	51-200	67 contacts →
	Partial evidence “At ADT Workplace, we excel in creating inspiring office spaces for businesses of all sizes.” Source: RevenueBase Database · checked Sep 17, 2026
20	Vermont Construction	Indirect evidence	Liverpool, United KingdomHQ checked Sep 17, 2026	11-50	66 contacts →
	Indirect evidence “At Vermont we provide a range of progressive construction and property development services.” Source: RevenueBase Database · checked Sep 17, 2026
21	Stelling Properties	Indirect evidence	Winchester, United KingdomHQ checked Sep 17, 2026	51-200	58 contacts →
	Indirect evidence “Through fully integrating all the component parts of real estate, Stelling Properties is able to optimise what we do and how we do it.” Source: RevenueBase Database · checked Sep 17, 2026
22	Griggs	Indirect evidence	Borehamwood, United KingdomHQ checked Sep 17, 2026	11-50	58 contacts →
	Indirect evidence “GRIGGS was established in 1968 as John E.” Source: RevenueBase Database · checked Sep 17, 2026
23	Axishouse	Indirect evidence	Wimborne, United KingdomHQ checked Sep 17, 2026	11-50	55 contacts →
	Indirect evidence “AxisHouse \| SHAPING FUTURES We are passionate about the creation of exceptional workplaces that help shape the future of your business, your people, and the planet.” Source: RevenueBase Database · checked Sep 17, 2026
24	Fasset Limited	Indirect evidence	Havant, United KingdomHQ checked Sep 17, 2026	201-500	55 contacts →
	Indirect evidence “Fasset is a property and facilities management company specialising in the delivery of managed space solutions on behalf of Corporate Occupiers and Property Investors.” Source: RevenueBase Database · checked Sep 17, 2026
25	Stanhope PLC	Partial evidence	London, United KingdomHQ checked Sep 17, 2026	51-200	54 contacts →
	Partial evidence “We’re the developers and asset managers behind lots of London’s most dynamic and longstanding landmarks, from Tate Modern to Television Centre.” 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: office building 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 office building developers.
Partial evidence: Its own public description names part of office building developers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name office building 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 747 office building developers based in the United Kingdom

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Office building developers based in the United Kingdom at a glance

As of Sep 17, 2026

28.0%Verified-email coverage

17.6Average contacts per company

1-10Median size (employees)

32.3%Largest-city concentration · London

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

429

11-50

231

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

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 747 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 office building 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 “office building 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 office building 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 office building 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, 3,682 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.

Office building developers by metro

Office building developers in London241

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 office building 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 office building developers are there based in the United Kingdom?

RevenueBase identified 747 office building 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?

Workman LLP, headquartered in London, tops this list with the largest team on record.

Which city has the most office building developers?

London leads with 241 headquartered companies, followed by Birmingham (16) and Manchester (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 3,682 verified decision-maker contacts tracked across these 747 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.