Company lists · Data refreshed September 2026

Top 25 Contextual advertising agencies based in London, United Kingdom

Name: Contextual advertising agencies based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 9, 2026 1,925 companies tracked

RevenueBase identified 1,925 company matches for contextual advertising agencies associated with London, United Kingdom as of September 2026 and tracks 19,922 professional contacts across them, including 3,170 with verified work emails and 1,290 with mobile numbers. Across the United Kingdom, London is the largest hub for this category.

This list covers company matches for contextual advertising 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 9, 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 9, 2026 How this list was built

1,925Companies

19,922Contacts tracked

3,170Verified emails

1,290Mobile numbers

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The 25 largest contextual advertising agencies based in London, United Kingdom

Ranked by team size

Top 25 of 1,925 company matches for contextual advertising agencies based in London, United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 9, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	M C Saatchi Performance	Exact match	London, United KingdomHQ recorded Sep 9, 2026	201-500	457 contacts →
	Exact match “We are a Global digital media agency specializing in taking a human approach to connecting brands with people across all channels.” Recorded in the RevenueBase company graph · Sep 9, 2026 · View company records in RevenueBase
2	Loopme	Exact match	London, United KingdomHQ recorded Sep 9, 2026	201-500	401 contacts →
	Exact match “LoopMe is bringing brands into apps, powered by AI agents.” Recorded in the RevenueBase company graph · Sep 9, 2026 · View company records in RevenueBase
3	Kinesso Uk&i	Exact match	London, United KingdomHQ recorded Sep 9, 2026	501-1,000	194 contacts →
	Exact match “KINESSO UK is the award-winning, tech-driven performance marketing agency delivering actionable growth for direct clients and agency partners.” Recorded in the RevenueBase company graph · Sep 9, 2026 · View company records in RevenueBase
4	ALL Response Media	Exact match	London, United KingdomHQ recorded Sep 9, 2026	51-200	178 contacts →
	Exact match “All Response Media is the leading performance media planning and buying agency.” Recorded in the RevenueBase company graph · Sep 9, 2026 · View company records in RevenueBase
5	BIG Group	Exact match	London, United KingdomHQ recorded Sep 9, 2026	51-200	177 contacts →
	Exact match “Founded in 1991, with offices in Amsterdam, Bath, Dubai and London our award-winning employee-owned company has consistently ranked as one of the UK's leading independent digital…” Recorded in the RevenueBase company graph · Sep 9, 2026 · View company records in RevenueBase
6	Expandi Group	Exact match	London, United KingdomHQ recorded Sep 9, 2026	201-500	155 contacts →
	Exact match “Expandi Group is a global leader in AdTech, MarTech and Managed Services.” Recorded in the RevenueBase company graph · Sep 9, 2026 · View company records in RevenueBase
7	Invibes Advertising	Exact match	London, United KingdomHQ recorded Sep 9, 2026	201-500	146 contacts →
	Exact match “At Invibes, our mission is to drive positive brand impact and business outcomes by prioritizing the uniqueness of every ad opportunity through valuable advertising solutions.” Recorded in the RevenueBase company graph · Sep 9, 2026 · View company records in RevenueBase
8	METIA	Exact match	London, United KingdomHQ recorded Sep 9, 2026	201-500	132 contacts →
	Exact match “Metia is a global marketing agency with offices in London, Seattle, Austin and Singapore.” Recorded in the RevenueBase company graph · Sep 9, 2026 · View company records in RevenueBase
9	Crimtan	Exact match	London, United KingdomHQ recorded Sep 9, 2026	51-200	130 contacts →
	Exact match “Crimtan was established in 2009 with a clear mission: to be a trusted partner for brands navigating the complex world of programmatic advertising.” Recorded in the RevenueBase company graph · Sep 9, 2026 · View company records in RevenueBase
10	E Intelligence	Exact match	London, United KingdomHQ recorded Sep 9, 2026	51-200	117 contacts →
	Exact match “e intelligence is a renowned global leader in the digital marketing space.” Recorded in the RevenueBase company graph · Sep 9, 2026 · View company records in RevenueBase
11	FOUND	Exact match	London, United KingdomHQ recorded Sep 9, 2026	51-200	104 contacts →
	Exact match “We're Found, the Everysearch™ agency.” Recorded in the RevenueBase company graph · Sep 9, 2026 · View company records in RevenueBase
12	Finixio	Exact match	London, United KingdomHQ recorded Sep 9, 2026	51-200	96 contacts →
	Exact match “Finixio is UK based remote first Marketing & SEO Agency helping clients all over the world.” Recorded in the RevenueBase company graph · Sep 9, 2026 · View company records in RevenueBase
13	Konica Minolta Marketing Services	Exact match	London, United KingdomHQ recorded Sep 9, 2026	501-1,000	87 contacts →
	Exact match “Head to Indicia Worldwide for our exciting new profile, packed with great content.” Recorded in the RevenueBase company graph · Sep 9, 2026 · View company records in RevenueBase
14	The Media People	Exact match	London, United KingdomHQ recorded Sep 9, 2026	11-50	83 contacts →
	Exact match “Powered by our people, our campaigns put your audience first.” Recorded in the RevenueBase company graph · Sep 9, 2026 · View company records in RevenueBase
15	Social Boost	Exact match	London, United KingdomHQ recorded Sep 9, 2026	51-200	79 contacts →
	Exact match “Social Boost has helped to grow more than 25 million real Followers, created content for 100+ brands, and generated over 300k sales leads.” Recorded in the RevenueBase company graph · Sep 9, 2026 · View company records in RevenueBase
16	Mind Digital Group	Exact match	London, United KingdomHQ recorded Sep 9, 2026	51-200	76 contacts →
	Exact match “Mind Digital Group is an independent digital company that is focused on servicing global clients and partner agencies.” Recorded in the RevenueBase company graph · Sep 9, 2026 · View company records in RevenueBase
17	GA Agency	Exact match	London, United KingdomHQ recorded Sep 9, 2026	51-200	70 contacts →
	Exact match “GA Agency is an award-winning digital marketing agency helping brands all over the world grow their business and revenue in the online space.” Recorded in the RevenueBase company graph · Sep 9, 2026 · View company records in RevenueBase
18	Nest Commerce	Exact match	London, United KingdomHQ recorded Sep 9, 2026	51-200	69 contacts →
	Exact match “Nest Commerce is a technology-led agency working with brands like Urban Outfitters, Hims and Damson Madder.” Recorded in the RevenueBase company graph · Sep 9, 2026 · View company records in RevenueBase
19	Clicksco	Exact match	London, United KingdomHQ recorded Sep 9, 2026	51-200	66 contacts →
	Exact match “As a new chapter in our Digital Agency begins, we are also a fantastic place to work, with a reputation for discovering and nurturing some of the finest minds in the business…” Recorded in the RevenueBase company graph · Sep 9, 2026 · View company records in RevenueBase
20	77agency	Exact match	London, United KingdomHQ recorded Sep 9, 2026	51-200	64 contacts →
	Exact match “We are an award-winning full-service digital agency, part of Jakala group with 1,800 employees across 16 countries around the world.” Recorded in the RevenueBase company graph · Sep 9, 2026 · View company records in RevenueBase
21	ROAST	Exact match	London, United KingdomHQ recorded Sep 9, 2026	51-200	57 contacts →
	Exact match “We are ROAST.” Recorded in the RevenueBase company graph · Sep 9, 2026 · View company records in RevenueBase
22	Adylic	Exact match	London, United KingdomHQ recorded Sep 9, 2026	51-200	57 contacts →
	Exact match “Adylic is OMG's Dynamic Creative Optimisation (DCO) specialist, enabling brands to deliver audience-first, data-driven creative, personalised to users across Display, Video…” Recorded in the RevenueBase company graph · Sep 9, 2026 · View company records in RevenueBase
23	OCM Digital Media	Exact match	London, United KingdomHQ recorded Sep 9, 2026	51-200	54 contacts →
	Exact match “OCM is a leading adtech agency providing solutions to advertisers, advertising agencies and to web, mobile & video publishers.” Recorded in the RevenueBase company graph · Sep 9, 2026 · View company records in RevenueBase
24	Wediscover Performance Marketing & Technology Agency	Exact match	London, United KingdomHQ recorded Sep 9, 2026	51-200	53 contacts →
	Exact match “WeDiscover was created to redefine performance marketing by integrating cutting-edge technology with expert performance marketers.” Recorded in the RevenueBase company graph · Sep 9, 2026 · View company records in RevenueBase
25	Stellar Search	Exact match	London, United KingdomHQ recorded Sep 9, 2026	11-50	48 contacts →
	Exact match “We're a strategic digital marketing agency specialising in Paid Search, SEO, Google Shopping, Amazon and Social.” Recorded in the RevenueBase company graph · Sep 9, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “contextual advertising agencies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 1,925 contextual advertising agencies based in London, United Kingdom

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Contextual advertising agencies based in London, United Kingdom at a glance

As of Sep 9, 2026

15.9%Verified-email coverage

6.5%Mobile-number coverage

10.3Average contacts per company

1-10Median size (employees)

Sep 9, 2026Page data refreshed

Companies by employee count

1-10

1,254

11-50

545

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 11.0d

2,8870–30

25931–60

161–90

190–180

22180+

Company record updated

Median 75.0d

00–30

7,21331–60

9,98761–90

1,90390–180

819180+

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 “contextual 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 3,170 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 9, 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.

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

How many contextual advertising agencies are there based in London, United Kingdom?

RevenueBase identified 1,925 company matches for contextual advertising 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?

M C Saatchi Performance 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 contextual advertising agencies?

London leads the United Kingdom with 2,107 company records, followed by Manchester (278) and Birmingham (164).

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 3,170 professional contacts with verified work emails tracked across these 1,925 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 9, 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.