Company lists · Data verified August 2026

Top 25 Lead qualification services based in London, United Kingdom

Name: Lead qualification services 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 193 companies tracked

There are 193 lead qualification services headquartered in London, United Kingdom (RevenueBase, August 2026). RevenueBase tracks 1,173 professional contacts across them, including 121 with verified work emails and 31 with mobile numbers. London is the largest hub.

This list covers lead qualification services 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.

193Companies

1,173Contacts tracked

121Verified emails

31Mobile numbers

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The 25 largest lead qualification services based in London, United Kingdom

Ranked by team size

Top 25 of 193 lead qualification services 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	Interlink	London	51-200	181	29
2	Marathon B2B	London	51-200	52	1
3	Seventic	London	11-50	38	4
4	KULAR	London	11-50	32	8
5	JBI Advertising	London	1-10	16	3
6	salesflow.io	London	11-50	14	7
7	Belexway Services	London	1-10	14	1
8	Prism Marketing Group LTD	London	51-200	10	1
9	Prismique	London	1-10	9	4
10	Agent Extra	London	1-10	8	4
11	Pinlocal	London	1-10	7	6
12	Neptik	London	11-50	7	4
13	B2B Consultancy Services	London	11-50	7	1
14	Nexusb2b	London	11-50	6	2
15	Teamsource	London	11-50	5	2
16	Traders Advertising	London	11-50	4	4
17	Evolution Engineers	London	11-50	4	3
18	Bloom Media Group	London	11-50	4	2
19	Leadarto	London	11-50	4	1
20	ZOOVR	London	11-50	4	1
21	Valuation Leads	London	1-10	4	1
22	Gravitable	London	1-10	4	1
23	Intentify Demand	London	11-50	3	3
24	NEG Media Consulting LTD	London	1-10	3	1
25	Bring Commerce	London	11-50	2	1

Showing 25 of 193 lead qualification services based in London, United Kingdom

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Lead qualification services based in London, United Kingdom at a glance

As of Aug 28, 2026

1-10Median size (employees)

LondonLargest hub · 193 HQs

31Contacts with mobile numbers

1Emails re-verified in last 30 days

Companies by employee count

1-10

139

11-50

51-200

201-500

Lead qualification services by metro in the United Kingdom

Metro	Companies
Lead qualification services in London	193
Lead qualification services in Manchester	36
Lead qualification services in Leeds	13
Lead qualification services in Birmingham	10
Lead qualification services in Bristol	9
Lead qualification services in Glasgow	8
Lead qualification services in Liverpool	6

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 “lead qualification services”, 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; 1 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 lead qualification services are there based in London, United Kingdom?

There are 193 lead qualification services headquartered in London, United Kingdom as of August 2026 (RevenueBase).

What is the largest company on this list?

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

Which city has the most lead qualification services?

London leads with 193 headquartered companies, followed by Manchester (36) and Leeds (13).

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 121 verified decision-maker contacts tracked across these 193 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.