Company lists · Data refreshed September 2026

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

RevenueBase identified 472 company matches for B2B lead generation agencies associated with London, United Kingdom as of September 2026 and tracks 5,300 professional contacts across them, including 1,166 with verified work emails and 277 with mobile numbers. Across the United Kingdom, London is the largest hub for this category.

This list covers company matches for B2B lead generation agencies associated with London, United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 1, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 1, 2026 How this list was built
472Companies
5,300Contacts tracked
1,166Verified emails
277Mobile numbers
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The 25 largest B2B lead generation agencies based in London, United Kingdom

Ranked by team size
Top 25 of 472 company matches for B2B lead generation agencies based in London, United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 1, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchLondon, United Kingdom501-1,000557 contacts →

Exact match

“Digitalzone is a global marketing and demand gen company dedicated to delivering compliant leads, exceptional customer satisfaction, and an end-to-end approach.”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
2Exact matchLondon, United Kingdom201-500417 contacts →

Exact match

“MVF powers growth for our clients by connecting them to potential customers.”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
3Exact matchLondon, United Kingdom51-200363 contacts →

Exact match

“In a world where everyone’s shouting the same thing, whisper something truly distinctive in all the right ears.”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
4Exact matchLondon, United Kingdom201-500302 contacts →

Exact match

“Vereigen Media is a U.S-based B2B demand generation company that supports organizations connect with data-driven lead generation and audience engagement solutions.”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
5Exact matchLondon, United Kingdom201-500195 contacts →

Exact match

“BNZSA, powered by Anteriad is a leading marketing agency specialising in tele-based demand generation with a team of more than 350 who are experts in delivering qualified…”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
6Exact matchLondon, United Kingdom51-200186 contacts →

Exact match

“We work exclusively with B2B publishers and lead gen providers.”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
7Exact matchLondon, United Kingdom51-200181 contacts →

Exact match

“We help our clients supercharge their sales.”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
8Exact matchLondon, United Kingdom51-200140 contacts →

Exact match

“Publicis Pro is the specialist B2B marketing agency within Publicis Groupe, the world's number one marketing holding group.”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
9Exact matchLondon, United Kingdom11-5060 contacts →

Exact match

“Angsana is the UK’s most respected new business development and lead generation agency for Healthcare & Life Sciences, Marketing Services and Technology companies.”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
10Exact matchLondon, United Kingdom501-1,00052 contacts →

Exact match

“At The Marketing Practice, we’ve combined the best B2B specialists from across the globe in one business, with capabilities that stretch through the funnel, from brand to demand…”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
11Exact matchLondon, United Kingdom51-20052 contacts →

Exact match

“We find ourselves in an era of remarkable technological advancement.”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
12Exact matchLondon, United Kingdom11-5045 contacts →

Exact match

“We are The Think Tank: a fully-integrated, result-oriented agency based in Holborn, London.”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
13Exact matchLondon, United Kingdom51-20045 contacts →

Exact match

“Advance Connects are a B2B telemarketing, lead generation & appointment scheduling experts, operating within various sectors including construction, built environment, industrial…”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
14Exact matchLondon, United Kingdom11-5042 contacts →

Exact match

“Ei Advisory provides B2B sales and marketing intelligence that helps companies reach, engage and convert customers.”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
15Exact matchLondon, United Kingdom11-5038 contacts →

Exact match

“Seventic, acteur majeur du développement commercial à forte valeur ajoutée répond à vos besoins de croissance.”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
16Exact matchLondon, United Kingdom51-20028 contacts →

Exact match

“Welcome to Lion Reach Media, where innovation meets unparalleled success in B2B marketing.”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
17Exact matchLondon, United Kingdom11-5027 contacts →

Exact match

“At digiio we pioneer innovative campaigns, approaches and intelligence that unlock interest and capture the imagination of our client’s customers.”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
18Exact matchLondon, United Kingdom11-5026 contacts →

Exact match

“We help B2B service firms turn their websites into consistent sources of high-quality enquiries.”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
19Exact matchLondon, United Kingdom11-5025 contacts →

Exact match

“Chiief is a global B2B marketing and events agency helping FSI, Manufacturinig and Technology brands accelerate revenue, expand market presence, and drive high-value engagement…”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
20Exact matchLondon, United Kingdom11-5025 contacts →

Exact match

“Recruitment Revenue is a lead generation partner built exclusively for recruitment agencies.”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
21Exact matchLondon, United Kingdom11-5024 contacts →

Exact match

“Built on recommendations, Velo is a specialist B2B agency that crafts marketing to be proud of for clients targeting a niche in the technology, industrial, and professional…”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
22Exact matchLondon, United Kingdom51-20024 contacts →

Exact match

“Outbound Partners helps B2B companies generate pipeline through structured outbound.”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
23Exact matchLondon, United Kingdom11-5023 contacts →

Exact match

“Bordeaux & Burgundy is a global B2B marketing agency that partners with technology companies from seed stage through to IPO to help grow their marketing efficiently.”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
24Exact matchLondon, United Kingdom11-5023 contacts →

Exact match

“Custom Intelligence are a Global B2B Demand Generation expert with over 20 years of B2B marketing expertise.”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
25Exact matchLondon, United Kingdom51-20016 contacts →

Exact match

“Big Wolf Marketing - Leaders in B2B Telemarketing, Lead Generation & Appointment Setting With a vast combined experience, implementing established and cutting edge innovative…”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase

Showing 25 of 472 B2B lead generation agencies based in London, United Kingdom

See the full list, filter by size, metro and specialty, and access 1,166 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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

As of Sep 1, 2026
22.0%Verified-email coverage
5.2%Mobile-number coverage
11.2Average contacts per company
1-10Median size (employees)
Sep 1, 2026Page data refreshed

Companies by employee count

1-10
308
11-50
119
51-200
37
201-500
6
501-1,000
2

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with London, United Kingdom whose business descriptions match “B2B lead generation agencies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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
Every displayed company carries at least one verified work email. RevenueBase tracks 1,166 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on September 1, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

B2B lead generation agencies by metro in the United Kingdom

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “B2B lead generation agencies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many B2B lead generation agencies are there based in London, United Kingdom?

RevenueBase identified 472 company matches for B2B lead generation agencies associated with London, United Kingdom as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Digitalzone tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in the United Kingdom has the most B2B lead generation agencies?

London leads the United Kingdom with 488 company records, 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 limited free results with 500 credits to start. Upgrading provides access to the 1,166 professional contacts with verified work emails tracked across these 472 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 1, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 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 with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.