Company lists · Data refreshed September 2026

Top 25 Full-service advertising agencies based in the United Kingdom

RevenueBase identified 5,445 company matches for full-service advertising agencies associated with the United Kingdom as of September 2026 and tracks 68,816 professional contacts across them, including 17,416 with verified work emails and 5,796 with mobile numbers. London is the largest hub.

This list covers company matches for full-service advertising agencies associated with the 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 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 RevenueBase SmartSearch · Exact Recorded Sep 3, 2026 How this list was built
5,445Companies
68,816Contacts tracked
17,416Verified emails
5,796Mobile numbers
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The 25 largest full-service advertising agencies based in the United Kingdom

Ranked by team size
Top 25 of 5,445 company matches for full-service advertising agencies based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 3, 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 matchLeicester, United Kingdom501-1,0001,157 contacts →

Exact match

“We’ve been delivering marketing and communications since 1961.”

Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
2Exact matchLondon, United Kingdom5,001-10,000993 contacts →

Exact match

“OMG UK delivers transformational experiences for consumers, clients and talent.”

Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
3Exact matchLondon, United Kingdom1,001-5,000862 contacts →

Exact match

“Neil Patel has been recognized by the Wall Street Journal, Forbes, and the United Nations, to name a few, as one of the most influential and successful marketers and entrepreneurs…”

Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
4Exact matchLondon, United Kingdom501-1,000765 contacts →

Exact match

“Founded in 2004, Anomaly is a difficult to define, but exciting to work at 'new model' agency.”

Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
5Exact matchMansfield, United Kingdom1,001-5,000651 contacts →

Exact match

“We’re Linney, a connected marketing partner helping brands turn complexity into clarity across digital, physical and ecommerce channels.”

Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
6Exact matchLondon, United Kingdom201-500553 contacts →

Exact match

“MG OMD, part of Omnicom Media, brings innovation, insight and creativity to the world of media.”

Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
7Exact matchLondon, United Kingdom1,001-5,000547 contacts →

Exact match

“Happy to see you came here to learn a little more about us!”

Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
8Exact matchLondon, United Kingdom201-500518 contacts →

Exact match

“We believe in the power of difference to make a difference.”

Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
9Exact matchUnited Kingdom501-1,000499 contacts →

Exact match

“Ogilvy UK inspires brands and people to impact the world.”

Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
10Exact matchBristol, United Kingdom201-500442 contacts →

Exact match

“TMW, part of Accenture Song, is an integrated creative agency.”

Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
11Exact matchLeeds, United Kingdom501-1,000416 contacts →

Exact match

“EssenceMediacom is WPP Media's newest and largest agency, committed to delivering breakthroughs for brands in the New Communications Economy.”

Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
12Exact matchLondon, United Kingdom201-500396 contacts →

Exact match

“Grapes Worldwide is a fastest growing global Marketing & Communication agency where we create “Story-Enabled Growth.” We are Data Obsessed and Strategically Engineered thinkers…”

Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
13Exact matchWindsor, United Kingdom201-500341 contacts →

Exact match

“For over 45 years, DRPG has been delivering everything from video, events and digital right through to research, strategy and creative communications.”

Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
14Exact matchLondon, United Kingdom201-500296 contacts →

Exact match

“the7stars is the UK’s largest independent media agency, offering the best people, the best service and the best creative media campaigns.”

Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
15Exact matchLondon, United Kingdom501-1,000282 contacts →

Exact match

“At NewBase we provide expert and independent marketing and advertising services across all media channels globally.”

Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
16Exact matchLondon, United Kingdom201-500257 contacts →

Exact match

“Forsman & Bodenfors is a globally recognised, Swedish-founded creative collective.”

Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
17Exact matchLeeds, United Kingdom501-1,000233 contacts →

Exact match

“Jaywing Part of the Stubben Edge Group We’re an award-winning creative, media and data agency.”

Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
18Exact matchHarefield, United Kingdom201-500184 contacts →

Exact match

“Increasing the size of your business.”

Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
19Exact matchSheffield, United Kingdom201-500171 contacts →

Exact match

“CC33 is a boutique agency with big ideas providing marketing solutions tailored to specifically meet your sales and marketing needs.”

Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
20Exact matchLondon, United Kingdom201-500163 contacts →

Exact match

“From pigeons to platforms, from news agency to integrated communications services, our story is one of constant reinvention.”

Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
21Exact matchLondon, United Kingdom201-500158 contacts →

Exact match

“We are Grey London.”

Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
22Exact matchNorwich, United Kingdom201-500149 contacts →

Exact match

“At krow Group, our ideas are designed to make a genuine difference, building your brand and making it easier to buy by capturing and converting people’s attention.”

Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
23Exact matchLondon, United Kingdom5,001-10,000136 contacts →

Exact match

“Zenith is the ROI Agency.”

Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
24Exact matchLondon, United Kingdom201-500133 contacts →

Exact match

“Welcome to Zenith – the ROI agency.”

Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase
25Exact matchLondon, United Kingdom201-500131 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 3, 2026 · View company records in RevenueBase

Showing 25 of 5,445 full-service advertising agencies based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 17,416 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Full-service advertising agencies based in the United Kingdom at a glance

As of Sep 3, 2026
25.3%Verified-email coverage
8.4%Mobile-number coverage
12.6Average contacts per company
1-10Median size (employees)
33.4%Largest-city concentration · London
Sep 3, 2026Page data refreshed

Companies by employee count

1-10
3,784
11-50
1,339
51-200
204
201-500
41
501-1,000
13
1,001-5,000
6
5,001-10,000
4

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 the United Kingdom whose business descriptions match “full-service advertising 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 17,416 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 3, 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.

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 “full-service advertising agencies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many full-service advertising agencies are there based in the United Kingdom?

RevenueBase identified 5,445 company matches for full-service advertising agencies associated with the 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?

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

Which city has the most full-service advertising agencies?

London leads with 1819 company records, followed by Manchester (203) and Birmingham (123).

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 17,416 professional contacts with verified work emails tracked across these 5,445 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 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.