Company lists · Data refreshed September 2026

Top 25 Boutique advertising agencies based in London, United Kingdom

Name: Boutique 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 28, 2026 2,673 companies tracked

RevenueBase identified 2,673 company matches for boutique advertising agencies associated with London, United Kingdom as of September 2026 and tracks 22,303 professional contacts across them, including 3,493 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers company matches for boutique 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 28, 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 28, 2026 How this list was built

2,673Companies

22,303Contacts tracked

3,493Verified emails

Explore this list → Free signup · no credit card · 500 free credits

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

Ranked by team size

Top 25 of 2,673 company matches for boutique advertising agencies based in London, United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 28, 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	Mediacom	Exact match	London, United KingdomHQ recorded Sep 28, 2026	5,001-10,000	3,247 contacts →
	Exact match “Hello.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
2	JKR	Exact match	London, United KingdomHQ recorded Sep 28, 2026	201-500	726 contacts →
	Exact match “If you remember only one thing about JKR, it's Be Distinctive Everywhere.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
3	Other Creative Limited	Exact match	London, United KingdomHQ recorded Sep 28, 2026	n/a	300 contacts →
	Exact match “other is the creative business.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
4	Spring Studios	Exact match	London, United KingdomHQ recorded Sep 28, 2026	201-500	279 contacts →
	Exact match “Spring is a global creative agency, headquartered in Europe, devoted to creating the exceptional for the world's most prestigious brands.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
5	Kitchen	Exact match	London, United KingdomHQ recorded Sep 28, 2026	n/a	229 contacts →
	Exact match “Welcome to Kitchen.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
6	Grey London	Exact match	London, United KingdomHQ recorded Sep 28, 2026	201-500	148 contacts →
	Exact match “We are Grey London.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
7	Pablo London	Exact match	London, United KingdomHQ recorded Sep 28, 2026	51-200	137 contacts →
	Exact match “Pablo is a humble, ego free advertising agency.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
8	E Intelligence	Exact match	London, United KingdomHQ recorded Sep 28, 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 28, 2026 · View company records in RevenueBase
9	Don't Panic London Certified B Corp	Exact match	London, United KingdomHQ recorded Sep 28, 2026	11-50	109 contacts →
	Exact match “In the age of the conscious consumer, only the most culturally relevant ideas cut through.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
10	Havas CX Helia	Exact match	London, United KingdomHQ recorded Sep 28, 2026	201-500	107 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 28, 2026 · View company records in RevenueBase
11	Empire Design	Exact match	London, United KingdomHQ recorded Sep 28, 2026	51-200	100 contacts →
	Exact match “Founded in 1996, Empire Design is an award-winning creative agency specialising in film and entertainment.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
12	The Specialist Works B Corp	Exact match	London, United KingdomHQ recorded Sep 28, 2026	51-200	85 contacts →
	Exact match “The Specialist Works is built exclusively for marketers at entrepreneurial brands.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
13	Heavenly	Exact match	London, United KingdomHQ recorded Sep 28, 2026	11-50	85 contacts →
	Exact match “Heavenly is a global, independent creative consultancy, founded in 2003.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
14	Social Boost	Exact match	London, United KingdomHQ recorded Sep 28, 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 28, 2026 · View company records in RevenueBase
15	Vaynermedia Emea	Exact match	London, United KingdomHQ recorded Sep 28, 2026	201-500	74 contacts →
	Exact match “VaynerMedia EMEA is an independent, full-service creative and media agency founded in 2014.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
16	Ignition Creative	Exact match	London, United KingdomHQ recorded Sep 28, 2026	11-50	71 contacts →
	Exact match “Ignition Creative is an award-winning creative agency with expertise in crafting advertising campaigns for the international entertainment industry.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
17	Another A Story	Exact match	London, United KingdomHQ recorded Sep 28, 2026	11-50	69 contacts →
	Exact match “ANOTHER A STORY is a full service agency with a wide range of expertise including creative, design, brand strategy and production.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
18	Stink Studios	Exact match	London, United KingdomHQ recorded Sep 28, 2026	51-200	60 contacts →
	Exact match “We are a global creative studio.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
19	Whitewall	Exact match	London, United KingdomHQ recorded Sep 28, 2026	11-50	60 contacts →
	Exact match “Whitewall is a new agency but one built on strong foundations.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
20	WCRS	Exact match	London, United KingdomHQ recorded Sep 28, 2026	51-200	56 contacts →
	Exact match “WCRS is a creative agency where classical brand building meets cutting edge digital thinking.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
21	YOU Agency	Exact match	London, United KingdomHQ recorded Sep 28, 2026	11-50	54 contacts →
	Exact match “A few agencies say it.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
22	Ragged Edge	Exact match	London, United KingdomHQ recorded Sep 28, 2026	11-50	53 contacts →
	Exact match “Average is easy.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
23	COW	Exact match	London, United KingdomHQ recorded Sep 28, 2026	11-50	49 contacts →
	Exact match “We create things that get you talked about.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
24	DJA	Exact match	London, United KingdomHQ recorded Sep 28, 2026	11-50	48 contacts →
	Exact match “Creative Direction, Branding & Content” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
25	Bopper Media	Exact match	London, United KingdomHQ recorded Sep 28, 2026	11-50	47 contacts →
	Exact match “Taking your brand to the new digital frontier.” Recorded in the RevenueBase company graph · Sep 28, 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 “boutique 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 2,673 boutique advertising agencies based in London, United Kingdom

See the full list, filter by size, metro and specialty, and access 3,493 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

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

As of Sep 28, 2026

15.7%Verified-email coverage

8.3Average contacts per company

1-10Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

2,086

11-50

507

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured across the whole United Kingdom list rather than for London, so it is reported there. Company counts and contact totals on this page are exact for London, over 2,673 companies.

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 “boutique 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 3,493 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 28, 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.

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

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

RevenueBase identified 2,673 company matches for boutique 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?

Mediacom 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 boutique advertising agencies?

London leads the United Kingdom with 2,673 company records, followed by Manchester (318) and Birmingham (170).

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 3,493 professional contacts with verified work emails tracked across these 2,673 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 28, 2026.

Ready to reach these companies? Verified emails and direct dials for all 2,673 boutique advertising agencies based in London, United Kingdom. Start with a free account, no credit card.

Download this list →

Related lists

Boutique advertising agencies by geography

Browse the directory

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.