Company lists · Data refreshed September 2026

Top 25 National broadcast advertising agencies based in London, United Kingdom

Name: National broadcast 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 13, 2026 99 companies tracked

RevenueBase identified 99 national broadcast advertising agencies headquartered in London, United Kingdom as of September 2026 and tracks 2,201 professional contacts across them, including 616 with verified work emails and 183 with mobile numbers. Across the United Kingdom, London is the largest hub for this category.

This list covers national broadcast advertising 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 13, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 13, 2026 86% judged on-target in blind review

99Companies

2,201Contacts tracked

616Verified emails

183Mobile numbers

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The 25 largest national broadcast advertising agencies based in London, United Kingdom

Ranked by team size

Top 25 of 99 national broadcast advertising agencies based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 13, 2026. RevenueBase Smart Search rates how each company's information relates to national broadcast advertising agencies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Mullenlowe Global	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	1,001-5,000	544 contacts →
	Indirect evidence “Happy to see you came here to learn a little more about us!” Source: RevenueBase Database · checked Sep 13, 2026
2	The7stars	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	201-500	295 contacts →
	Indirect evidence “the7stars is the UK’s largest independent media agency, offering the best people, the best service and the best creative media campaigns.” Source: RevenueBase Database · checked Sep 13, 2026
3	Newbase	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	501-1,000	282 contacts →
	Partial evidence “At NewBase we provide expert and independent marketing and advertising services across all media channels globally.” Source: RevenueBase Database · checked Sep 13, 2026
4	Goodstuff	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	132 contacts →
	Indirect evidence “We are an award-winning media planning and buying agency, helping brands cut through the noise with strategic clarity, inventive solutions, and commercial integrity.” Source: RevenueBase Database · checked Sep 13, 2026
5	The Kite Factory	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	111 contacts →
	Indirect evidence “We’re The Kite Factory, the independent media agency built on Values and Velocity.” Source: RevenueBase Database · checked Sep 13, 2026
6	AMS Media Group	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	50 contacts →
	Indirect evidence “From our office in London & Leeds, we seamlessly plan and buy media across all channels: digital, TV, cinema, OOH, radio, print, social and search.” Source: RevenueBase Database · checked Sep 13, 2026
7	FEREF	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	35 contacts →
	Indirect evidence “We're a creative agency for a connected world.” Source: RevenueBase Database · checked Sep 13, 2026
8	Smithfield Agency	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	24 contacts →
	Indirect evidence “Where people and creativity drive real results.” Source: RevenueBase Database · checked Sep 13, 2026
9	JWE Media	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	23 contacts →
	Partial evidence “At JWE Media, we take care of your marketing and advertising needs, from TV to Press, Out of Home to Digital, we manage the whole process ensuring we save you time and money.” Source: RevenueBase Database · checked Sep 13, 2026
10	Guerillascope	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	21 contacts →
	Indirect evidence “Guerillascope is a full-service media agency, with serious chops across AV, out-of-home, publishers, digital, and partnerships.” Source: RevenueBase Database · checked Sep 13, 2026
11	White Spider Media	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	18 contacts →
	Indirect evidence “White Spider Media agency's name has been fraudulently used by third parties, often communicating via messaging services on unofficial websites and apps and targeting job seekers.” Source: RevenueBase Database · checked Sep 13, 2026
12	Fortemus Films	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	13 contacts →
	Indirect evidence “We create social campaigns, OOH content, TVCs, digital films, key visuals, branded content, sports sponsorship campaigns and much more all over the world and from our London…” Source: RevenueBase Database · checked Sep 13, 2026
13	Media15	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	12 contacts →
	Strong evidence “Media15 is a fully independent Advertising Sales Agency providing commercial representation for TV stations broadcasting in the UK on Sky, Freeview, Freesat, Virgin Media & IPTV.” Source: RevenueBase Database · checked Sep 13, 2026
14	Shine Creative Solutions LTD	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	11 contacts →
	Partial evidence “Shine deliver creative campaigns that enhance the rest of the advertising and media schedules, offering a service for one-off projects or on-going strategy and implementation of…” Source: RevenueBase Database · checked Sep 13, 2026
15	Cousin Media Group LTD	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	10 contacts →
	Indirect evidence “COUSIN Media Group is a full-service media planning and buying agency focused on the entertainment industry.” Source: RevenueBase Database · checked Sep 13, 2026
16	Noah Advertising	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	10 contacts →
	Indirect evidence “We are an exciting (and excited) ad agency founded in 2010.” Source: RevenueBase Database · checked Sep 13, 2026
17	Excite OOH	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	10 contacts →
	Partial evidence “Excite OOH is a specialised outdoor advertising agency covering all aspects of media planning, buying, creative, reporting, strategy, etc.” Source: RevenueBase Database · checked Sep 13, 2026
18	Water & Lime Media	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	9 contacts →
	Indirect evidence “Water & Lime Media is a full service media buying agency.” Source: RevenueBase Database · checked Sep 13, 2026
19	TBP Media	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	9 contacts →
	Indirect evidence “At TBP Media, we don’t do small.” Source: RevenueBase Database · checked Sep 13, 2026
20	Crate Media Group	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	8 contacts →
	Indirect evidence “We specialise in Display, Social, Native, Video, Search, Programmatic TV, Digital Radio & Digital Out of Home, alongside Creative services, seamlessly unifying cross-channel…” Source: RevenueBase Database · checked Sep 13, 2026
21	The Village Communications	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	8 contacts →
	Indirect evidence “WE COVER ALL YOUR MEDIA NEEDS Village Communications is your definitive media authority, excelling in both digital and traditional arenas with passion and professionalism.” Source: RevenueBase Database · checked Sep 13, 2026
22	Story9 LTD	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	8 contacts →
	Indirect evidence “Travel marketing is unlike any other category.” Source: RevenueBase Database · checked Sep 13, 2026
23	Acumen Media Partners	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	7 contacts →
	Indirect evidence “We are a full service media agency and we offer the best of both worlds: On one hand we are an independent, IPA accredited agency, able to offer unbiased and transparent advice.” Source: RevenueBase Database · checked Sep 13, 2026
24	Capital City Media LTD	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	7 contacts →
	Indirect evidence “Capital City Media Ltd is a media planning and buying agency primarily focussed on the financial industry.” Source: RevenueBase Database · checked Sep 13, 2026
25	Happy Ending Agency	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	7 contacts →
	Indirect evidence “Happy Ending was born to deliver creative work, that works.” Source: RevenueBase Database · checked Sep 13, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: national broadcast advertising agencies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names national broadcast advertising agencies.
Partial evidence: Its own public description names part of national broadcast advertising agencies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name national broadcast advertising agencies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 99 national broadcast advertising agencies based in London, United Kingdom

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National broadcast advertising agencies based in London, United Kingdom at a glance

As of Sep 13, 2026

28.0%Verified-email coverage

8.3%Mobile-number coverage

22.2Average contacts per company

1-10Median size (employees)

Sep 13, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

Freshness & accuracy

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

Email last verified

Median 15.0d

4960–30

11531–60

261–90

090–180

3180+

Company record updated

Median 78.0d

00–30

69431–60

1,16861–90

25890–180

81180+

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 national broadcast advertising agencies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in London, United Kingdom whose own description of what they do matches “national broadcast advertising agencies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names national broadcast advertising agencies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among national broadcast advertising 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 its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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, 616 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 September 13, 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

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names national broadcast advertising agencies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

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

RevenueBase identified 99 national broadcast advertising agencies headquartered in London, United Kingdom as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Mullenlowe Global, headquartered in London, tops this list with the largest team on record.

Which city in the United Kingdom has the most national broadcast advertising agencies?

London leads the United Kingdom with 209 headquartered companies, followed by Manchester (21) and Birmingham (15).

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 616 verified decision-maker contacts tracked across these 99 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 13, 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 Smart Search, 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.