Company lists · Data refreshed September 2026

Top 25 Office building owners based in the United Kingdom

Name: Office building owners 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 422 companies tracked

RevenueBase identified 422 office building owners headquartered in the United Kingdom as of September 2026 and tracks 5,762 professional contacts across them, including 1,399 with verified work emails. London is the largest hub.

This list covers office building owners 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

422Companies

5,762Contacts tracked

1,399Verified emails

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The 25 largest office building owners based in the United Kingdom

Ranked by team size

Top 25 of 422 office building owners 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 owners: 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	MAPP	Indirect evidence	London, United KingdomHQ checked Sep 17, 2026	501-1,000	547 contacts →
	Indirect evidence “We are MAPP … we are an adventurous, curious and outward-looking team of around 650+ people who are on a mission to do something a little bit special together.” Source: RevenueBase Database · checked Sep 17, 2026
2	Bruntwood	Partial evidence	Manchester, United KingdomHQ checked Sep 17, 2026	501-1,000	424 contacts →
	Partial evidence “We own, let and manage outstanding buildings, workspace, innovation and science facilities.” Source: RevenueBase Database · checked Sep 17, 2026
3	The Office Group	Partial evidence	London, United KingdomHQ checked Sep 17, 2026	501-1,000	368 contacts →
	Partial evidence “The Office Group is a leading flexible workspace developer and operator, with a growing portfolio of quality and distinctive spaces across London and the UK.” Source: RevenueBase Database · checked Sep 17, 2026
4	Wavenet Connected	Indirect evidence	London, United KingdomHQ checked Sep 17, 2026	201-500	160 contacts →
	Indirect evidence “Wavenet Connected is a specialist division for the flex space sector.” Source: RevenueBase Database · checked Sep 17, 2026
5	Revantage Uk, A Blackstone Portfolio Company	Indirect evidence	London, United KingdomHQ checked Sep 17, 2026	51-200	140 contacts →
	Indirect evidence “Revantage, a Blackstone Real Estate portfolio company, is a global provider of corporate services.” Source: RevenueBase Database · checked Sep 17, 2026
6	FI Real Estate Management LTD	Indirect evidence	Chorley, United KingdomHQ checked Sep 17, 2026	201-500	103 contacts →
	Indirect evidence “FI Real Estate Management (FIREM) specialise in asset and property management; employing experienced and enthusiastic staff with vast expertise in commercial property.” Source: RevenueBase Database · checked Sep 17, 2026
7	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
8	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
9	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
10	Robert Irving Burns	Indirect evidence	London, United KingdomHQ checked Sep 17, 2026	51-200	58 contacts →
	Indirect evidence “Robert Irving Burns was formed in 1962 and over the last fifty years, through a constantly evolving landscape, the business has grown into a well-respected commercial and…” Source: RevenueBase Database · checked Sep 17, 2026
11	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
12	Estama	Partial evidence	London, United KingdomHQ checked Sep 17, 2026	51-200	52 contacts →
	Partial evidence “We are Estama, an employee-owned business and one of the UK's leading commercial asset & property managers, offering investors authentic, trusted and actionable solutions that…” Source: RevenueBase Database · checked Sep 17, 2026
13	Ocubis LTD	Indirect evidence	London, United KingdomHQ checked Sep 17, 2026	51-200	49 contacts →
	Indirect evidence “Ocubis is a privately held property company which owns, manages and develops commercial and residential properties in London.” Source: RevenueBase Database · checked Sep 17, 2026
14	Hurstwood Holdings Commercial & Residential Property	Indirect evidence	Manchester, United KingdomHQ checked Sep 17, 2026	11-50	39 contacts →
	Indirect evidence “Commercial and Residential Property Nationwide Investment and Sales Development and Project Management Land Strategy and Planning Hurstwood Holdings is a commercial property…” Source: RevenueBase Database · checked Sep 17, 2026
15	Locale	Partial evidence	Oxford, United KingdomHQ checked Sep 17, 2026	11-50	39 contacts →
	Partial evidence “Locale is the UK's leading building management platform for commercial and residential real estate.” Source: RevenueBase Database · checked Sep 17, 2026
16	Workthere	Indirect evidence	London, United KingdomHQ checked Sep 17, 2026	11-50	32 contacts →
	Indirect evidence “Our team of global experts provide you with local market insights and data driven advice to enable you to make better decisions when it comes to flexible workspace.” Source: RevenueBase Database · checked Sep 17, 2026
17	Mcconnell Property JLL Alliance Partner	Indirect evidence	Belfast, United KingdomHQ checked Sep 17, 2026	11-50	31 contacts →
	Indirect evidence “McConnell Property is a real estate company based out of Montgomery House, Montgomery Street, Belfast BT1 4NX” Source: RevenueBase Database · checked Sep 17, 2026
18	Gatehouse Property Management	Indirect evidence	Glasgow, United KingdomHQ checked Sep 17, 2026	11-50	30 contacts →
	Indirect evidence “Gatehouse Property Management ltd.” Source: RevenueBase Database · checked Sep 17, 2026
19	TSP B Corp	Indirect evidence	London, United KingdomHQ checked Sep 17, 2026	11-50	30 contacts →
	Indirect evidence “TSP is a hospitality-led, people-first property management business focused on driving lasting value from real assets.” Source: RevenueBase Database · checked Sep 17, 2026
20	Capital Industrial LLP	Indirect evidence	London, United KingdomHQ checked Sep 17, 2026	11-50	24 contacts →
	Indirect evidence “Capital Industrial is a property investment and management company focused on industrial assets in the London area.” Source: RevenueBase Database · checked Sep 17, 2026
21	Cowiesburn	Indirect evidence	Edinburgh, United KingdomHQ checked Sep 17, 2026	11-50	23 contacts →
	Indirect evidence “Specialists in Property Management As a specialist firm, Cowiesburn are committed to being the best independent and dedicated property management service provider throughout the…” Source: RevenueBase Database · checked Sep 17, 2026
22	Hicks Baker	Indirect evidence	Reading, United KingdomHQ checked Sep 17, 2026	11-50	20 contacts →
	Indirect evidence “Hicks Baker provides all the expertise required to meet the varied requirements of developers, investors and occupiers.” Source: RevenueBase Database · checked Sep 17, 2026
23	GMS Estates Limited	Partial evidence	London, United KingdomHQ checked Sep 17, 2026	11-50	18 contacts →
	Partial evidence “GMS is a family-owned property manager and investor, committed to providing our tenants with a diverse portfolio of commercial, residential and industrial properties in London and…” Source: RevenueBase Database · checked Sep 17, 2026
24	Golden Eagle International LTD	Indirect evidence	London, United KingdomHQ checked Sep 17, 2026	11-50	17 contacts →
	Indirect evidence “Golden Eagle International is one of Central London’s leading property companies dealing with all aspects of residential and commercial property.” Source: RevenueBase Database · checked Sep 17, 2026
25	Cbre Managed Services Limited	Indirect evidence	London, United KingdomHQ checked Sep 17, 2026	11-50	16 contacts →
	Indirect evidence “Looking for property solutions that reduce cost & risk, better manage your space and improve productivity?” 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 owners. 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 owners.
Partial evidence: Its own public description names part of office building owners, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name office building owners. 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 422 office building owners based in the United Kingdom

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Office building owners based in the United Kingdom at a glance

As of Sep 17, 2026

24.3%Verified-email coverage

13.7Average contacts per company

1-10Median size (employees)

29.4%Largest-city concentration · London

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

286

11-50

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 422 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 owners, 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 owners”. 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 owners), 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 owners, 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, 1,399 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 owners by metro

Office building owners in London124

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 owners, 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 owners are there based in the United Kingdom?

RevenueBase identified 422 office building owners 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?

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

Which city has the most office building owners?

London leads with 124 headquartered companies, followed by Manchester (17) and Birmingham (13).

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 1,399 verified decision-maker contacts tracked across these 422 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.