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Company lists · Data refreshed September 2026

Top 25 B2B lifecycle marketing agencies based in London, United Kingdom

Compiled by the RevenueBase Data Team Data refreshed Sep 3, 2026 705 companies tracked

RevenueBase identified 705 B2B lifecycle marketing agencies headquartered in London, United Kingdom as of September 2026 and tracks 12,274 professional contacts across them, including 2,059 with verified work emails and 840 with mobile numbers. London is the largest hub.

This list covers B2B lifecycle marketing agencies headquartered in London, United Kingdom, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, how directly it supports the match, and when it was last checked. Data refreshed September 3, 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 Match evidence on every row Refreshed Sep 3, 2026 86% judged on-target in blind review
705Companies
12,274Contacts tracked
2,059Verified emails
840Mobile numbers
Unlock all 705 companies Free signup · no credit card · 500 free credits

The 25 largest B2B lifecycle marketing agencies based in London, United Kingdom

Ranked by team size
Top 25 of 705 B2B lifecycle marketing agencies based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 3, 2026. Evidence rates how directly each company's own description names B2B lifecycle marketing agencies: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#CompanyHeadquartersEmployeesContacts
1
MVFIndirect evidence
London, United Kingdom201-500417

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

Source: company website · checked Sep 3, 2026
2
EntourageIndirect evidence
London, United Kingdom51-200363

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

Source: company website · checked Sep 3, 2026
3
Vereigen MediaPartial evidence
London, United Kingdom201-500302

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

Source: company website · checked Sep 3, 2026
4
IntentsifyPartial evidence
London, United Kingdom201-500216

“Intentsify empowers B2B marketers to turn buying signals into pipeline by enhancing conversions among decision makers at priority accounts throughout their buying journey.”

Source: company website · checked Sep 3, 2026
5
Account MediaPartial evidence
London, United Kingdom51-200186

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

Source: company website · checked Sep 3, 2026
6
Publicis PROStrong evidence
London, United Kingdom51-200140

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

Source: company website · checked Sep 3, 2026
7
METIAPartial evidence
London, United Kingdom201-500131

“Metia is a global marketing agency with offices in London, Seattle, Austin and Singapore.”

Source: company website · checked Sep 3, 2026
8
BBNPartial evidence
London, United Kingdom1,001-5,00085

“THIS IS B2B WITHOUT BORDERS THIS IS BBN BBN breaks boundaries.”

Source: company website · checked Sep 3, 2026
9
Clarion CommunicationsIndirect evidence
London, United Kingdom51-20075

“At Clarion Communications, we don't just solve brand problems; we seize opportunities that elevate brands to new heights.”

Source: company website · checked Sep 3, 2026
10
Propeller GroupStrong evidence
London, United Kingdom51-20071

“Propeller Group is a global B2B agency with an integrated approach to PR, content, and growth marketing.”

Source: company website · checked Sep 3, 2026
11
Fight OR FlightPartial evidence
London, United Kingdom51-20066

“Today, B2B brands battle for attention in the same crowded space as everything else.”

Source: company website · checked Sep 3, 2026
12
CI GroupIndirect evidence
London, United Kingdom51-20057

“We are constantly seeking exceptional individuals to join our team!”

Source: company website · checked Sep 3, 2026
13
The Marketing PracticeStrong evidence
London, United Kingdom501-1,00052

“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…”

Source: company website · checked Sep 3, 2026
14
Marathon B2BIndirect evidence
London, United Kingdom51-20052

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

Source: company website · checked Sep 3, 2026
15
D2msPartial evidence
London, United Kingdom51-20050

“At D2MS, we believe direct marketing can be done differently.”

Source: company website · checked Sep 3, 2026
16
OrbitalxStrong evidence
London, United Kingdom51-20049

“OrbitalX is an account-based marketing agency helping B2B marketing teams generate ICP qualified pipeline.”

Source: company website · checked Sep 3, 2026
17
BIG Picture UKPartial evidence
London, United Kingdom51-20048

“We are Industry-leading experts in digtal, field, channel, and experiential marketing for consumer electronics & technology.”

Source: company website · checked Sep 3, 2026
18
Initials CXPartial evidence
London, United Kingdom51-20047

“We are Initials CX - a proudly independent marketing agency that help brands to deliver exceptional customer experiences.”

Source: company website · checked Sep 3, 2026
19
Advance ConnectsPartial evidence
London, United Kingdom51-20045

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

Source: company website · checked Sep 3, 2026
20
TRUEPartial evidence
London, United Kingdom51-20038

“True is a B2B specialist creative and media agency based in London with global offices.”

Source: company website · checked Sep 3, 2026
21
Lion Reach MediaStrong evidence
London, United Kingdom51-20028

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

Source: company website · checked Sep 3, 2026
22
Outbound PartnersPartial evidence
London, United Kingdom51-20024

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

Source: company website · checked Sep 3, 2026
23
Alan. AgencyStrong evidence
London, United Kingdom51-20022

“Since our inception in 2014, we’ve been on a mission to change B2B marketing.”

Source: company website · checked Sep 3, 2026
24
BIG Wolf MarketingStrong evidence
London, United Kingdom51-20016

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

Source: company website · checked Sep 3, 2026
25
Adds CorporationPartial evidence
London, United Kingdom51-20016

“ADDS Corporation is a one-stop marketplace for the best B2B Marketers, Agencies, Publishers, and Lead Generation Solution Providers.”

Source: company website · checked Sep 3, 2026

Showing 25 of 705 B2B lifecycle marketing agencies based in London, United Kingdom

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 2,059 reachable decision-makers.

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B2B lifecycle marketing agencies based in London, United Kingdom at a glance

As of Sep 3, 2026
1-10Median size (employees)
LondonLargest hub · 705 HQs
840Contacts with mobile numbers
Sep 3, 2026Data refreshed

Companies by employee count

1-10
451
11-50
192
51-200
46
201-500
8
501-1,000
3
1,001-5,000
3
5,001-10,000
1

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among B2B lifecycle marketing agencies, so some rows will be adjacent to the category rather than pure plays. The description and evidence rating on every row are there so you can check each match yourself.

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
Companies headquartered in London, United Kingdom whose own description of what they do matches “B2B lifecycle marketing agencies”. Matching reads each company's description, not its industry code or its name.
What we exclude
Companies whose own description does not clearly place them among B2B lifecycle marketing agencies, and records with no verified work email. Companies headquartered outside London are excluded even when they keep an office there.
Match quality
In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and an evidence rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 2,059 across the full list. 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 3, 2026. Lists refresh periodically as the graph is re-checked.
Corrections
Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

B2B lifecycle marketing agencies by metro in the United Kingdom

Frequently asked

How many B2B lifecycle marketing agencies are there based in London, United Kingdom?

RevenueBase identified 705 B2B lifecycle marketing agencies headquartered in London, United Kingdom as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

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

Which city has the most B2B lifecycle marketing agencies?

London leads with 705 headquartered companies, followed by Manchester (73) and Birmingham (40).

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 2,059 verified decision-maker contacts tracked across these 705 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 3, 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.

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