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. London is the largest hub.

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, how directly it supports the match, 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 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 HQ checked on every row Match evidence 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. Evidence rates how directly each company's own description names office building investment firms: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	LandsecIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	501-1,000	935
	“Landsec is built on places that stand the test of time.” Source: company website · checked Sep 5, 2026
2	Avison Young UKIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	1,001-5,000	789
	“Avison Young creates real economic, social and environmental value as a global real estate advisor, powered by people.” Source: company website · checked Sep 5, 2026
3	MAPPIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	501-1,000	547
	“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: company website · checked Sep 5, 2026
4	Greystar InternationalIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	1,001-5,000	401
	“At Greystar, we approach investing in, developing, and operating residential real estate with discipline and integrity.” Source: company website · checked Sep 5, 2026
5	Savills Investment ManagementIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	201-500	365
	“Our purpose is to build prosperity by investing in resilient real assets.” Source: company website · checked Sep 5, 2026
6	M&g Real EstateIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	201-500	265
	“M&G Real Estate is recognised as one of the world’s leading property investors.” Source: company website · checked Sep 5, 2026
7	GPEStrong evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	197
	“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: company website · checked Sep 5, 2026
8	Revantage Uk, A Blackstone Portfolio CompanyIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	140
	“Revantage, a Blackstone Real Estate portfolio company, is a global provider of corporate services.” Source: company website · checked Sep 5, 2026
9	Quintain LimitedPartial evidence	London, United KingdomHQ checked Sep 5, 2026	201-500	127
	“Established in 1992, Quintain brings property and places to life through investment and development.” Source: company website · checked Sep 5, 2026
10	Criterion CapitalIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	108
	“Criterion Capital is a real estate asset manager that identifies, acquires, develops and manages real estate on behalf of long-term investors.” Source: company website · checked Sep 5, 2026
11	CEGIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	105
	“Never one to follow the pack, CEG leads by doing things its own way.” Source: company website · checked Sep 5, 2026
12	Broadgate EstatesIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	201-500	103
	“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: company website · checked Sep 5, 2026
13	Cain InternationalPartial evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	98
	“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: company website · checked Sep 5, 2026
14	Victory GroupPartial evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	98
	“Victory is a leading investment firm focused on real estate and hotels throughout Western Europe.” Source: company website · checked Sep 5, 2026
15	CLS Holdings PLCPartial evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	88
	“CLS Holdings is a Listed property investment company, with a £1.9 billion property portfolio in the UK, France and Germany.” Source: company website · checked Sep 5, 2026
16	DTZ InvestorsPartial evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	67
	“DTZ Investors is a full service, vertically integrated, real estate investment and asset manager.” Source: company website · checked Sep 5, 2026
17	Robert Irving BurnsIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	58
	“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: company website · checked Sep 5, 2026
18	Global MutualIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	57
	“Global Mutual is a European and U.S.” Source: company website · checked Sep 5, 2026
19	Landswood DE COY LLPPartial evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	54
	“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: company website · checked Sep 5, 2026
20	Long Harbour LTDPartial evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	54
	“Long Harbour is a modern real estate investment management firm and a leader in the operational real estate sector.” Source: company website · checked Sep 5, 2026
21	EstamaIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	52
	“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: company website · checked Sep 5, 2026
22	Freshwater Group Of CompaniesPartial evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	52
	“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: company website · checked Sep 5, 2026
23	Estate Office Property ConsultantsStrong evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	52
	“Estate Office is a leading player in the investment and development market for residential and commercial property.” Source: company website · checked Sep 5, 2026
24	Round Hill CapitalPartial evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	51
	“Round Hill Capital Ventures LLC (“Round Hill Capital”) is a leading global specialist in residential real estate, investment, development and management.” Source: company website · checked Sep 5, 2026
25	EQ GroupIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	51
	“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: company website · checked Sep 5, 2026

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

1-10Median size (employees)

LondonLargest hub · 650 HQs

Contacts with mobile numbers

Sep 5, 2026Data 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 this city, 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 evidence 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 SmartSearch, 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.
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 an evidence 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

Office building investment firms in London650
Office building investment firms in Manchester61
Office building investment firms in Birmingham30
Office building investment firms in Glasgow29

Frequently asked

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 has the most office building investment firms?

London leads 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 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.