Company lists · Data verified August 2026

Top 25 B2B lead generation companies based in London, United Kingdom

Name: B2B lead generation 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 376 companies tracked

There are 376 B2B lead generation companies headquartered in London, United Kingdom (RevenueBase, August 2026). RevenueBase tracks 4,550 professional contacts across them, including 845 with verified work emails and 210 with mobile numbers. London is the largest hub.

This list covers B2B lead generation 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.

376Companies

4,550Contacts tracked

845Verified emails

210Mobile numbers

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The 25 largest B2B lead generation companies based in London, United Kingdom

Ranked by team size

Top 25 of 376 B2B lead generation 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	Digitalzone	London	501-1,000	557	137
2	MVF	London	201-500	417	246
3	Vereigen Media	London	201-500	302	38
4	BNZSA	London	201-500	195	6
5	Account Media	London	51-200	186	39
6	Interlink	London	51-200	181	29
7	Angsana NEW Business Agency	London	11-50	60	17
8	The Marketing Practice	London	501-1,000	52	30
9	Marathon B2B	London	51-200	52	1
10	Advance Connects	London	51-200	45	20
11	Seventic	London	11-50	38	4
12	Lion Reach Media	London	51-200	28	9
13	ORRJO	London	11-50	26	13
14	Wonderful	London	11-50	26	5
15	Recruitment Revenue	London	11-50	25	4
16	Outbound Partners	London	51-200	24	3
17	Custom Intelligence	London	11-50	23	2
18	Prospectaware	London	11-50	22	8
19	Adds Corporation	London	51-200	16	1
20	BIG Wolf Marketing	London	51-200	16	1
21	Caytoo	London	11-50	14	11
22	Salessourcers	London	11-50	12	4
23	Callent Tech LTD	London	51-200	12	2
24	The Digital Funnel	London	11-50	11	7
25	Prism Marketing Group LTD	London	51-200	10	1

Showing 25 of 376 B2B lead generation companies based in London, United Kingdom

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B2B lead generation companies based in London, United Kingdom at a glance

As of Aug 28, 2026

1-10Median size (employees)

LondonLargest hub · 376 HQs

210Contacts with mobile numbers

12Emails re-verified in last 30 days

Companies by employee count

1-10

242

11-50

51-200

201-500

501-1,000

B2B lead generation companies by metro in the United Kingdom

Metro	Companies
B2B lead generation companies in London	376
B2B lead generation companies in Manchester	65
B2B lead generation companies in Birmingham	25
B2B lead generation companies in Leeds	20
B2B lead generation companies in Bristol	14
B2B lead generation companies in Glasgow	14
B2B lead generation companies in Brighton	13

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 lead generation 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; 12 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 lead generation companies are there based in London, United Kingdom?

There are 376 B2B lead generation companies headquartered in London, United Kingdom as of August 2026 (RevenueBase).

What is the largest company on this list?

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

Which city has the most B2B lead generation companies?

London leads with 376 headquartered companies, followed by Manchester (65) and Birmingham (25).

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 845 verified decision-maker contacts tracked across these 376 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.