Company lists · Data refreshed August 2026

Top 25 Advertising consulting firms based in the United Kingdom

RevenueBase identified 4,354 company matches for advertising consulting firms associated with the United Kingdom as of August 2026 and tracks 27,973 professional contacts across them, including 8,005 with verified work emails and 2,264 with mobile numbers. London is the largest hub.

This list covers company matches for advertising consulting firms 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 August 30, 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 Aug 30, 2026 How this list was built
4,354Companies
27,973Contacts tracked
8,005Verified emails
2,264Mobile numbers
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The 25 largest advertising consulting firms based in the United Kingdom

Ranked by team size
Top 25 of 4,354 company matches for advertising consulting firms based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Aug 30, 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 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 · Aug 30, 2026 · View company records in RevenueBase
2Exact 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 · Aug 30, 2026 · View company records in RevenueBase
3Exact matchUnited Kingdom501-1,000499 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Aug 30, 2026 · View company records in RevenueBase
4Exact 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 · Aug 30, 2026 · View company records in RevenueBase
5Exact 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 · Aug 30, 2026 · View company records in RevenueBase
6Exact matchHarefield, United Kingdom201-500184 contacts →

Exact match

“Increasing the size of your business.”

Recorded in the RevenueBase company graph · Aug 30, 2026 · View company records in RevenueBase
7Exact 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 · Aug 30, 2026 · View company records in RevenueBase
8Exact matchLondon, United Kingdom201-500158 contacts →

Exact match

“We are Grey London.”

Recorded in the RevenueBase company graph · Aug 30, 2026 · View company records in RevenueBase
9Exact 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 · Aug 30, 2026 · View company records in RevenueBase
10Exact matchLondon, United Kingdom201-500133 contacts →

Exact match

“Welcome to Zenith – the ROI agency.”

Recorded in the RevenueBase company graph · Aug 30, 2026 · View company records in RevenueBase
11Exact matchLondon, United Kingdom51-200132 contacts →

Exact match

“We are an award-winning media planning and buying agency, helping brands cut through the noise with strategic clarity, inventive solutions, and commercial integrity.”

Recorded in the RevenueBase company graph · Aug 30, 2026 · View company records in RevenueBase
12Exact 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 · Aug 30, 2026 · View company records in RevenueBase
13Exact matchLondon, United Kingdom201-500128 contacts →

Exact match

“Instinctif UK has officially rebranded to TEAM LEWIS.”

Recorded in the RevenueBase company graph · Aug 30, 2026 · View company records in RevenueBase
14Exact matchNottingham, United Kingdom51-20093 contacts →

Exact match

“We're a full-service design, marketing and brand agency based in Nottingham.”

Recorded in the RevenueBase company graph · Aug 30, 2026 · View company records in RevenueBase
15Exact matchLondon, United Kingdom51-20087 contacts →

Exact match

“We’re an award-winning, proudly independent marketing agency.”

Recorded in the RevenueBase company graph · Aug 30, 2026 · View company records in RevenueBase
16Exact matchBrighton, United Kingdom51-20086 contacts →

Exact match

“Net Natives helps you connect with every potential student through the smartest, fastest student advertising.”

Recorded in the RevenueBase company graph · Aug 30, 2026 · View company records in RevenueBase
17Exact matchLondon, United Kingdom501-1,00085 contacts →

Exact match

“Head to Indicia Worldwide for our exciting new profile, packed with great content.”

Recorded in the RevenueBase company graph · Aug 30, 2026 · View company records in RevenueBase
18Exact matchBirmingham, United Kingdom51-20081 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Aug 30, 2026 · View company records in RevenueBase
19Exact matchKingston Upon Thames, United Kingdom51-20070 contacts →

Exact match

“Dunn & Co.”

Recorded in the RevenueBase company graph · Aug 30, 2026 · View company records in RevenueBase
20Exact matchMeriden, United Kingdom51-20068 contacts →

Exact match

“An independent, creative-first agency full of people who dare to care.”

Recorded in the RevenueBase company graph · Aug 30, 2026 · View company records in RevenueBase
21Exact matchLeicester, United Kingdom51-20065 contacts →

Exact match

“We’re a full-service, Leicester-based but fully remote creative agency that delivers impactful work, powered by original thinking, clear insight and a passion for what we do.”

Recorded in the RevenueBase company graph · Aug 30, 2026 · View company records in RevenueBase
22Exact matchClerkenwell, United Kingdom51-20065 contacts →

Exact match

“Founded by five people in March 2021 who believed that a better type of media and comms agency wasn’t just possible, but needed, from a standing start we are now almost sixty…”

Recorded in the RevenueBase company graph · Aug 30, 2026 · View company records in RevenueBase
23Exact matchLondon, United Kingdom51-20065 contacts →

Exact match

“FOREFRONT is a full-fledged creative group with presence in Southeast Asia and Europe.”

Recorded in the RevenueBase company graph · Aug 30, 2026 · View company records in RevenueBase
24Exact matchLondon, United Kingdom51-20065 contacts →

Exact match

“Geronimo is an independent creative agency that believes change is good.”

Recorded in the RevenueBase company graph · Aug 30, 2026 · View company records in RevenueBase
25Exact matchLuton, United Kingdom51-20048 contacts →

Exact match

“TV ADVERTISING, TV COMMERCIALS, VIDEO & CONTENT PRODUCTION, ADVERTISING, SOCIAL MEDIA MARKETING AND BRAND CONSULTING FOR THE MOST AMBITIOUS BRANDS, BUSINESSES AND STARTUPS ON THE…”

Recorded in the RevenueBase company graph · Aug 30, 2026 · View company records in RevenueBase

Showing 25 of 4,354 advertising consulting firms based in the United Kingdom

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Advertising consulting firms based in the United Kingdom at a glance

As of Aug 30, 2026
28.6%Verified-email coverage
8.1%Mobile-number coverage
6.4Average contacts per company
1-10Median size (employees)
31.8%Largest-city concentration · London
Aug 30, 2026Page data refreshed

Companies by employee count

1-10
3,415
11-50
757
51-200
104
201-500
21
501-1,000
4
1,001-5,000
4
10001+
1

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 “advertising consulting firms” 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 8,005 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 August 30, 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 “advertising consulting firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many advertising consulting firms are there based in the United Kingdom?

RevenueBase identified 4,354 company matches for advertising consulting firms associated with the United Kingdom as of August 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?

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

Which city has the most advertising consulting firms?

London leads with 1383 company records, followed by Manchester (133) and Birmingham (89).

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 8,005 professional contacts with verified work emails tracked across these 4,354 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 August 30, 2026.

Ready to reach these companies? Verified emails and direct dials for all 4,354 advertising consulting firms based in the United Kingdom. Start with a free account, no credit card.

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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.