Company lists · Data verified August 2026

Top 25 B2B lead generation agencies based in the United Kingdom

Name: B2B lead generation agencies based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 1,393 companies tracked

There are 1,393 B2B lead generation agencies headquartered in the United Kingdom (RevenueBase, August 2026). RevenueBase tracks 13,035 professional contacts across them, including 3,018 with verified work emails and 748 with mobile numbers. London is the largest hub.

This list covers B2B lead generation agencies headquartered in the 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.

1,393Companies

13,035Contacts tracked

3,018Verified emails

748Mobile numbers

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The 25 largest B2B lead generation agencies based in the United Kingdom

Ranked by team size

Top 25 of 1,393 B2B lead generation agencies based in the 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	Qualifa	Brighton	51-200	440	2
3	MVF	London	201-500	417	246
4	Entourage	London	51-200	363	81
5	Vereigen Media	London	201-500	302	38
6	Astute.com	Bournemouth	201-500	265	38
7	BNZSA	London	201-500	195	6
8	Account Media	London	51-200	186	39
9	Publicis PRO	London	51-200	140	34
10	Durhamlane	Newcastle Upon Tyne	51-200	114	74
11	Pursuit Marketing	Glasgow	51-200	96	8
12	OMNE	Ampthill	51-200	72	60
13	Creative Media	Omagh	51-200	70	27
14	Armstrongb2b	Chester	51-200	67	49
15	Hallam	Nottingham	51-200	66	12
16	Excelerate360	Hitchin	51-200	65	19
17	Fifth Ring	Aberdeen	51-200	63	35
18	Sircles Digital Marketing Agency	Dudley	51-200	53	6
19	The Marketing Practice	London	501-1,000	52	30
20	Marathon B2B	London	51-200	52	1
21	Advance Connects	London	51-200	45	20
22	Parallel Partnerships LTD	Leeds	51-200	43	7
23	Matter	Leeds	51-200	39	19
24	1 Stop Data LTD	Northern	51-200	35	3
25	Leadly	Manchester	51-200	34	14

Showing 25 of 1,393 B2B lead generation agencies based in the United Kingdom

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B2B lead generation agencies based in the United Kingdom at a glance

As of Aug 28, 2026

1-10Median size (employees)

LondonLargest hub · 488 HQs

748Contacts with mobile numbers

23Emails re-verified in last 30 days

Companies by employee count

1-10

916

11-50

369

51-200

201-500

501-1,000

B2B lead generation agencies by metro

Metro	Companies
B2B lead generation agencies in London	488
B2B lead generation agencies in Manchester	81
B2B lead generation agencies in Birmingham	32
B2B lead generation agencies in Leeds	22
B2B lead generation agencies in Bristol	21
B2B lead generation agencies in Glasgow	15
B2B lead generation agencies in Brighton	14

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 agencies”, with match quality audited by blind human judging, and headquartered in the 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; 23 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 agencies are there based in the United Kingdom?

There are 1,393 B2B lead generation agencies headquartered in the 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 agencies?

London leads with 488 headquartered companies, followed by Manchester (81) and Birmingham (32).

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 3,018 verified decision-maker contacts tracked across these 1,393 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.