Company lists · Data verified August 2026

Top 23 B2B contact database companies based in London, United Kingdom

Name: B2B contact database companies based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 88 companies tracked

There are 88 B2B contact database companies headquartered in London, United Kingdom (RevenueBase, August 2026). RevenueBase tracks 882 professional contacts across them, including 123 with verified work emails and 36 with mobile numbers. London is the largest hub.

This list covers B2B contact database companies headquartered in London, United Kingdom, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

88Companies

882Contacts tracked

123Verified emails

36Mobile numbers

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The 23 largest B2B contact database companies based in London, United Kingdom

Ranked by team size

Top 23 of 88 B2B contact database companies based in London, United Kingdom, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Vereigen Media	London	201-500	302	38
2	Marathon B2B	London	51-200	52	1
	RevenueBasePublisher of this directory	Boston, MA	n/a	n/a	Try free
3	Advance Connects	London	51-200	45	20
4	EI Global B2B Marketing Intelligence	London	11-50	42	17
5	Custom Intelligence	London	11-50	23	2
6	Callent Tech LTD	London	51-200	12	2
7	IIRIS	London	201-500	9	8
8	Demand Studio	London	51-200	7	5
9	Perlon AI	London	11-50	7	4
10	Neptik	London	11-50	7	4
11	B2B Consultancy Services	London	11-50	7	1
12	Datacrete	London	1-10	6	2
13	Guruaxis	London	11-50	5	1
14	Market Partner	London	11-50	4	3
15	Intentify Demand	London	11-50	3	3
16	Latch Media LTD	London	1-10	3	3
17	Bring Commerce	London	11-50	2	1
18	Integra Data Solutions	London	1-10	2	1
19	Prospectsafari	London	1-10	2	1
20	Dsb2b Marketing	London	1-10	1	1
21	Dream Leadz	London	1-10	1	1
22	Flourish Leads	London	1-10	1	1
23	Pulse Genie	London	1-10	1	1

Showing 23 of 88 B2B contact database companies based in London, United Kingdom

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B2B contact database companies based in London, United Kingdom at a glance

As of Aug 28, 2026

1-10Median size (employees)

LondonLargest hub · 88 HQs

36Contacts with mobile numbers

2Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

B2B contact database companies by metro in the United Kingdom

Metro	Companies
B2B contact database companies in London	88
B2B contact database companies in Manchester	10
B2B contact database companies in Bournemouth	5
B2B contact database companies in Birmingham	4
B2B contact database companies in Cambridge	3
B2B contact database companies in Camberley	3
B2B contact database companies in Glasgow	3

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “B2B contact database companies”, with match quality audited by blind human judging, and headquartered in London, United Kingdom.
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: Contact records re-verify on a rolling cadence; 2 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many B2B contact database companies are there based in London, United Kingdom?

There are 88 B2B contact database companies headquartered in London, United Kingdom as of August 2026 (RevenueBase).

What is the largest company on this list?

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

Which city has the most B2B contact database companies?

London leads with 88 headquartered companies, followed by Manchester (10) and Bournemouth (5).

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 123 verified decision-maker contacts tracked across these 88 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.