Company lists · Data refreshed August 2026

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

There are 977 B2B performance marketing agencies headquartered in London, United Kingdom (RevenueBase, August 2026). RevenueBase tracks 14,533 professional contacts across them, including 2,237 with verified work emails and 1,147 with mobile numbers. London is the largest hub.

This list covers B2B performance 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 August 30, 2026.

977Companies
14,533Contacts tracked
2,237Verified emails
1,147Mobile numbers
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The 25 largest B2B performance marketing agencies based in London, United Kingdom

Ranked by team size
Top 25 of 977 B2B performance marketing agencies based in London, United Kingdom, ranked by team size, largest first. Data refreshed Aug 30, 2026. Evidence rates how directly each company's own description names B2B performance 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.
#CompanyHeadquartersEmployeesContactsVerified emails
1
Rakuten AdvertisingStrong evidence

“Rakuten Advertising leads the affiliate and partner marketing industry in delivering performance-driven marketing solutions that help the world’s top brands connect with unique…”

Source: company website · checked Aug 30, 2026
London, United Kingdom501-1,0009011
2
MVFIndirect evidence

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

Source: company website · checked Aug 30, 2026
London, United Kingdom201-500417246
3
EntourageIndirect evidence

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

Source: company website · checked Aug 30, 2026
London, United Kingdom51-20036381
4
Vereigen MediaPartial evidence

“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 Aug 30, 2026
London, United Kingdom201-50030238
5
Kinesso Uk&iStrong evidence

“KINESSO is the technology-driven performance marketing agency that sits at the very heart of IPG Mediabrands, providing actionable growth for both our agency partners and clients.”

Source: company website · checked Aug 30, 2026
London, United Kingdom501-1,000194120
6
Techshu.comStrong evidence

“TechShu is a work-first performance marketing agency in India, helping enterprises and high-growth brands drive measurable revenue through data-led digital marketing.”

Source: company website · checked Aug 30, 2026
London, United Kingdom201-50018717
7
Expandi GroupIndirect evidence

“Expandi Group is a global leader in AdTech, MarTech and Managed Services.”

Source: company website · checked Aug 30, 2026
London, United Kingdom201-50015546
8
Connective3Strong evidence

“We are a specialist performance marketing agency, and we deliver unrivalled performance for our clients on a global scale.”

Source: company website · checked Aug 30, 2026
London, United Kingdom51-20015393
9
Publicis PROStrong evidence

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

Source: company website · checked Aug 30, 2026
London, United Kingdom51-20014034
10
Smarter Ecommerce SmecStrong evidence

“Smarter Ecommerce (smec) is a leading PPC software provider and performance marketing agency that helps ecommerce brands achieve better business outcomes through AI-driven…”

Source: company website · checked Aug 30, 2026
London, United Kingdom51-2009255
11
BBNPartial evidence

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

Source: company website · checked Aug 30, 2026
London, United Kingdom1,001-5,000858
12
Efficient FrontierPartial evidence

“Maximum advertising performance and returns.”

Source: company website · checked Aug 30, 2026
London, United Kingdom201-500852
13
Propeller GroupStrong evidence

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

Source: company website · checked Aug 30, 2026
London, United Kingdom51-2007150
14
Fight OR FlightPartial evidence

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

Source: company website · checked Aug 30, 2026
London, United Kingdom51-2006649
15
ROASTIndirect evidence

“We are ROAST.”

Source: company website · checked Aug 30, 2026
London, United Kingdom51-2005736
16

“WeDiscover was created to redefine performance marketing by integrating cutting-edge technology with expert performance marketers.”

Source: company website · checked Aug 30, 2026
London, United Kingdom51-2005637
17
The Marketing PracticeStrong evidence

“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 Aug 30, 2026
London, United Kingdom501-1,0005230
18
Marathon B2BIndirect evidence

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

Source: company website · checked Aug 30, 2026
London, United Kingdom51-200521
19
D2msPartial evidence

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

Source: company website · checked Aug 30, 2026
London, United Kingdom51-200509
20
OrbitalxStrong evidence

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

Source: company website · checked Aug 30, 2026
London, United Kingdom51-2004911
21
Cake Getcake.comStrong evidence

“CAKE has led the performance marketing industry with innovative solutions for advertisers, networks, and publishers to manage, measure, and optimize their digital marketing…”

Source: company website · checked Aug 30, 2026
London, United Kingdom51-2004412
22
GrawlixStrong evidence

“Grawlix is a leading AI-driven software development and performance marketing company based in the USA, empowering businesses to scale faster through intelligent technology and…”

Source: company website · checked Aug 30, 2026
London, United Kingdom51-200445
23
Rocket SaasStrong evidence

“SaaS marketing strategy and execution team for B2B brands with limited in-house resources.”

Source: company website · checked Aug 30, 2026
London, United Kingdom51-2003825
24
TRUEPartial evidence

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

Source: company website · checked Aug 30, 2026
London, United Kingdom51-2003818
25
Lion Reach MediaStrong evidence

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

Source: company website · checked Aug 30, 2026
London, United Kingdom51-200289

Showing 25 of 977 B2B performance marketing agencies based in London, United Kingdom

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

As of Aug 30, 2026
1-10Median size (employees)
LondonLargest hub · 977 HQs
1,147Contacts with mobile numbers
Aug 30, 2026Data refreshed

Companies by employee count

1-10
616
11-50
285
51-200
55
201-500
9
501-1,000
7
1,001-5,000
3
5,001-10,000
2

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 performance 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: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
What qualifies
Companies headquartered in London, United Kingdom whose own description of what they do matches “B2B performance 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 performance 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.
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, 2,237 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 August 30, 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.

Frequently asked

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

There are 977 B2B performance marketing agencies headquartered in London, United Kingdom as of August 2026 (RevenueBase).

What is the largest company on this list?

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

Which city has the most B2B performance marketing agencies?

London leads with 977 headquartered companies, followed by Manchester (135) and Leeds (48).

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 2,237 verified decision-maker contacts tracked across these 977 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on August 30, 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.