Company lists · Data verified August 2026

Top 25 B2B lead databases based in the United Kingdom

Name: B2B lead databases 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 170 companies tracked

There are 170 B2B lead databases headquartered in the United Kingdom (RevenueBase, August 2026). RevenueBase tracks 1,960 professional contacts across them, including 296 with verified work emails and 76 with mobile numbers. London is the largest hub.

This list covers B2B lead databases 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.

170Companies

1,960Contacts tracked

296Verified emails

76Mobile numbers

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The 25 largest B2B lead databases based in the United Kingdom

Ranked by team size

Top 25 of 170 B2B lead databases 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	Qualifa	Brighton	51-200	440	2
2	Vereigen Media	London	201-500	302	38
	RevenueBasePublisher of this directory	Boston, MA	n/a	n/a	Try free
3	GCL	Birmingham	51-200	120	18
4	Marathon B2B	London	51-200	52	1
5	Beanstalk Marketing	Birmingham	11-50	43	33
6	Think Pipeline LTD	Woking	51-200	38	2
7	Fusion Integration	Bracknell	11-50	35	2
8	Corpdata LTD	Teignmouth	51-200	34	6
9	XSELL	Antrim	11-50	29	14
10	The Lead Generation Company	Manchester Manchester	11-50	28	10
11	Data HQ LTD	Chelmsford	11-50	27	14
12	Bollin Green	Macclesfield	11-50	22	17
13	Acquirz	Cheltenham	11-50	18	14
14	Research Runner	Harlow	11-50	16	15
15	Marketscan	Chichester	11-50	15	8
16	Merrehill	Macclesfield	11-50	13	9
17	I-4business Emea LTD	Farnham	11-50	13	5
18	The Data Business	Canterbury	51-200	12	10
19	Bluewater Marketing LTD	Wellingborough	11-50	12	4
20	Cardwell Marketing	Tachbrook Park	11-50	10	1
21	Demand Studio	London	51-200	7	5
22	Neptik	London	11-50	7	4
23	Perlon AI	London	11-50	7	4
24	Funnel Boost LTD	Peterborough	11-50	6	2
25	Pivotal ONE	Ilkley	11-50	5	4

Showing 25 of 170 B2B lead databases based in the United Kingdom

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B2B lead databases based in the United Kingdom at a glance

As of Aug 28, 2026

1-10Median size (employees)

LondonLargest hub · 64 HQs

76Contacts with mobile numbers

4Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

201-500

B2B lead databases by metro

Metro	Companies
B2B lead databases in London	64
B2B lead databases in Manchester	10
B2B lead databases in Leeds	4
B2B lead databases in Macclesfield	3
B2B lead databases in Edinburgh	3
B2B lead databases in Bristol	3
B2B lead databases in Birmingham	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 lead databases”, 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; 4 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 databases are there based in the United Kingdom?

There are 170 B2B lead databases headquartered in the United Kingdom as of August 2026 (RevenueBase).

What is the largest company on this list?

Qualifa, headquartered in Brighton, tops this list with the largest team on record.

Which city has the most B2B lead databases?

London leads with 64 headquartered companies, followed by Manchester (10) and Leeds (4).

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 296 verified decision-maker contacts tracked across these 170 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.