Company lists · Data refreshed September 2026

Top 25 Office building investment firms based in London, United Kingdom

Name: Office building investment firms based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 650 companies tracked

RevenueBase identified 650 office building investment firms headquartered in London, United Kingdom as of September 2026 and tracks 10,363 professional contacts across them, including 3,423 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers office building investment firms headquartered in London, 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 5, 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 5, 2026 86% judged on-target in blind review

650Companies

10,363Contacts tracked

3,423Verified emails

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The 25 largest office building investment firms based in London, United Kingdom

Ranked by team size

Top 25 of 650 office building investment firms based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 5, 2026. RevenueBase Smart Search rates how each company's information relates to office building investment firms: 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	Landsec	Indirect evidence	London, United KingdomHQ checked Sep 5, 2026	501-1,000	935 contacts →
	Indirect evidence “Landsec is built on places that stand the test of time.” Source: RevenueBase Database · checked Sep 5, 2026
2	Avison Young UK	Indirect evidence	London, United KingdomHQ checked Sep 5, 2026	1,001-5,000	789 contacts →
	Indirect evidence “Avison Young creates real economic, social and environmental value as a global real estate advisor, powered by people.” Source: RevenueBase Database · checked Sep 5, 2026
3	MAPP	Indirect evidence	London, United KingdomHQ checked Sep 5, 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 5, 2026
4	Greystar International	Indirect evidence	London, United KingdomHQ checked Sep 5, 2026	1,001-5,000	401 contacts →
	Indirect evidence “At Greystar, we approach investing in, developing, and operating residential real estate with discipline and integrity.” Source: RevenueBase Database · checked Sep 5, 2026
5	Savills Investment Management	Indirect evidence	London, United KingdomHQ checked Sep 5, 2026	201-500	365 contacts →
	Indirect evidence “Our purpose is to build prosperity by investing in resilient real assets.” Source: RevenueBase Database · checked Sep 5, 2026
6	M&g Real Estate	Indirect evidence	London, United KingdomHQ checked Sep 5, 2026	201-500	265 contacts →
	Indirect evidence “M&G Real Estate is recognised as one of the world’s leading property investors.” Source: RevenueBase Database · checked Sep 5, 2026
7	GPE	Strong evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	197 contacts →
	Strong evidence “GPE is a FTSE 250 property investment and development company owning around £2.5 billion of office, retail and residential space in central London.” Source: RevenueBase Database · checked Sep 5, 2026
8	Revantage Uk, A Blackstone Portfolio Company	Indirect evidence	London, United KingdomHQ checked Sep 5, 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 5, 2026
9	Quintain Limited	Partial evidence	London, United KingdomHQ checked Sep 5, 2026	201-500	127 contacts →
	Partial evidence “Established in 1992, Quintain brings property and places to life through investment and development.” Source: RevenueBase Database · checked Sep 5, 2026
10	Criterion Capital	Indirect evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	108 contacts →
	Indirect evidence “Criterion Capital is a real estate asset manager that identifies, acquires, develops and manages real estate on behalf of long-term investors.” Source: RevenueBase Database · checked Sep 5, 2026
11	CEG	Indirect evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	105 contacts →
	Indirect evidence “Never one to follow the pack, CEG leads by doing things its own way.” Source: RevenueBase Database · checked Sep 5, 2026
12	Broadgate Estates	Indirect evidence	London, United KingdomHQ checked Sep 5, 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 5, 2026
13	Cain International	Partial evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	98 contacts →
	Partial evidence “Cain International ('Cain') is a privately held investment firm focused on real estate and business opportunities that shape the fabric of global gateway cities.” Source: RevenueBase Database · checked Sep 5, 2026
14	Victory Group	Partial evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	98 contacts →
	Partial evidence “Victory is a leading investment firm focused on real estate and hotels throughout Western Europe.” Source: RevenueBase Database · checked Sep 5, 2026
15	CLS Holdings PLC	Partial evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	88 contacts →
	Partial evidence “CLS Holdings is a Listed property investment company, with a £1.9 billion property portfolio in the UK, France and Germany.” Source: RevenueBase Database · checked Sep 5, 2026
16	DTZ Investors	Partial evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	67 contacts →
	Partial evidence “DTZ Investors is a full service, vertically integrated, real estate investment and asset manager.” Source: RevenueBase Database · checked Sep 5, 2026
17	Robert Irving Burns	Indirect evidence	London, United KingdomHQ checked Sep 5, 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 5, 2026
18	Global Mutual	Indirect evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	57 contacts →
	Indirect evidence “Global Mutual is a European and U.S.” Source: RevenueBase Database · checked Sep 5, 2026
19	Landswood DE COY LLP	Partial evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	54 contacts →
	Partial evidence “Landswood de Coy LLP is an independent, partner-led real estate investment and asset management firm, established in January 2006 by Ari Eckstein and Edward Schwab.” Source: RevenueBase Database · checked Sep 5, 2026
20	Long Harbour LTD	Partial evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	54 contacts →
	Partial evidence “Long Harbour is a modern real estate investment management firm and a leader in the operational real estate sector.” Source: RevenueBase Database · checked Sep 5, 2026
21	Estama	Indirect evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	52 contacts →
	Indirect 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 5, 2026
22	Freshwater Group Of Companies	Partial evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	52 contacts →
	Partial evidence “Freshwater Group of Companies is a diversified real estate investment and management group comprising Daejan Group Holdings Limited, Centremanor Limited and Highdorn Co Limited.” Source: RevenueBase Database · checked Sep 5, 2026
23	Estate Office Property Consultants	Strong evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	52 contacts →
	Strong evidence “Estate Office is a leading player in the investment and development market for residential and commercial property.” Source: RevenueBase Database · checked Sep 5, 2026
24	Round Hill Capital	Partial evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	51 contacts →
	Partial evidence “Round Hill Capital Ventures LLC (“Round Hill Capital”) is a leading global specialist in residential real estate, investment, development and management.” Source: RevenueBase Database · checked Sep 5, 2026
25	EQ Group	Indirect evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	51 contacts →
	Indirect evidence “EQ’s institutional quality discipline coupled with entrepreneurial, hands-on operational management enables us to identify and execute niche, high value-add real estate…” Source: RevenueBase Database · checked Sep 5, 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 investment firms. 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 investment firms.
Partial evidence: Its own public description names part of office building investment firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name office building investment firms. 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 650 office building investment firms based in London, United Kingdom

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Office building investment firms based in London, United Kingdom at a glance

As of Sep 5, 2026

33.0%Verified-email coverage

15.9Average contacts per company

1-10Median size (employees)

Sep 5, 2026Page data refreshed

Companies by employee count

1-10

440

11-50

149

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured across the whole United Kingdom list rather than for London, so it is reported there. Company counts and contact totals on this page are exact for London, over 650 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 investment firms, 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 London, United Kingdom whose own description of what they do matches “office building investment firms”. 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 investment firms), 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 investment firms, and records with no verified work email. Companies headquartered outside London 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, 3,423 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 5, 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 investment firms by metro in the United Kingdom

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 investment firms, 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 investment firms are there based in London, United Kingdom?

RevenueBase identified 650 office building investment firms headquartered in London, 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?

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

Which city in the United Kingdom has the most office building investment firms?

London leads the United Kingdom with 650 headquartered companies, followed by Manchester (61) and Birmingham (30).

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 3,423 verified decision-maker contacts tracked across these 650 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 5, 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.