Company lists · Data refreshed September 2026

Top 25 Startup marketing agencies based in London, United Kingdom

Name: Startup marketing 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 6, 2026 2,640 companies tracked

RevenueBase identified 2,640 company matches for startup marketing agencies associated with London, United Kingdom as of September 2026 and tracks 14,983 professional contacts across them, including 1,873 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers company matches for startup marketing 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 6, 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 6, 2026 How this list was built

2,640Companies

14,983Contacts tracked

1,873Verified emails

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The 25 largest startup marketing agencies based in London, United Kingdom

Ranked by team size

Top 25 of 2,640 company matches for startup marketing agencies based in London, United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 6, 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	E Intelligence	Exact match	London, United KingdomHQ recorded Sep 6, 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 6, 2026 · View company records in RevenueBase
2	SIYA	Exact match	London, United KingdomHQ recorded Sep 6, 2026	51-200	87 contacts →
	Exact match “We are Siya Tech, a startup studio where we partner with tech startups to fuel their growth.” Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
3	The Specialist Works B Corp	Exact match	London, United KingdomHQ recorded Sep 6, 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 6, 2026 · View company records in RevenueBase
4	Heavenly	Exact match	London, United KingdomHQ recorded Sep 6, 2026	11-50	85 contacts →
	Exact match “Heavenly is a global, independent creative consultancy, founded in 2003.” Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
5	Social Boost	Exact match	London, United KingdomHQ recorded Sep 6, 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 6, 2026 · View company records in RevenueBase
6	FIN International	Exact match	London, United KingdomHQ recorded Sep 6, 2026	11-50	73 contacts →
	Exact match “Accelerating growth for investment brands Choose from a range of services tailored to your needs Evolving your brand to generate growth: We focus on the purest truth of your…” Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
7	GA Agency	Exact match	London, United KingdomHQ recorded Sep 6, 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 6, 2026 · View company records in RevenueBase
8	UP World	Exact match	London, United KingdomHQ recorded Sep 6, 2026	11-50	62 contacts →
	Exact match “Up Club is the unfair advantage of ambitious start-up marketers looking to accelerate their growth It provides exclusive access to industry leaders, expert mentorship, and…” Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
9	Revere Agency	Exact match	London, United KingdomHQ recorded Sep 6, 2026	51-200	56 contacts →
	Exact match “Revere is now Marketbridge.” Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
10	MONK	Exact match	London, United KingdomHQ recorded Sep 6, 2026	11-50	52 contacts →
	Exact match “MONK is a brand strategy, design & experience firm, entrusted with delivering tactical and strategic marketing initiatives for some of the biggest brands and most influential…” Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
11	Pingpong Digital	Exact match	London, United KingdomHQ recorded Sep 6, 2026	11-50	48 contacts →
	Exact match “PingPong Digital specializes in emerging market engagement for forward thinking brands, universities, and organizations seeking fresh and long lasting opportunities.” Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
12	TM	Exact match	London, United KingdomHQ recorded Sep 6, 2026	n/a	47 contacts →
	Exact match “We help clients in every expression of their brand; from identity and strategy through to implementation.” Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
13	BAMBU	Exact match	London, United KingdomHQ recorded Sep 6, 2026	n/a	45 contacts →
	Exact match “Bambu is an online marketing and advertising agency based in London, working with startup and growth brands across the UK, Europe and North America, founded by two ex-WPP…” Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
14	Beautiful Digital	Exact match	London, United KingdomHQ recorded Sep 6, 2026	11-50	44 contacts →
	Exact match “Beautiful Digital is a full service digital marketing agency.” Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
15	The Think Tank	Exact match	London, United KingdomHQ recorded Sep 6, 2026	11-50	44 contacts →
	Exact match “We are The Think Tank: a fully-integrated, result-oriented agency based in Holborn, London.” Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
16	ANGEL	Exact match	London, United KingdomHQ recorded Sep 6, 2026	11-50	41 contacts →
	Exact match “Angel is a creative & digital marketing agency that’s spent 25+ years helping brands launch campaigns without the usual agency faff and fees.” Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
17	Haarty Hanks	Exact match	London, United KingdomHQ recorded Sep 6, 2026	11-50	35 contacts →
	Exact match “Haarty Hanks is a digital marketing agency comprised of tech nerds, creative designers and innovative strategists that plan and execute exceptional brand communications and web…” Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
18	KOL Limited	Exact match	London, United KingdomHQ recorded Sep 6, 2026	51-200	34 contacts →
	Exact match “KOL limited is a full service Digital Agency headquartered in London.” Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
19	Bird Marketing	Exact match	London, United KingdomHQ recorded Sep 6, 2026	11-50	33 contacts →
	Exact match “Bird UK - bird.co.uk Bird UAE - bird.ae Bird USA - bird.marketing Bird Marketing, an award-winning digital marketing agency, is a beacon of excellence in the digital landscape.” Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
20	What's Possible Group	Exact match	London, United KingdomHQ recorded Sep 6, 2026	51-200	32 contacts →
	Exact match “What’s Possible Group is a collection of PICK (Passionate, Inquisitive, Caring and Knowledgeable) people building marketing services for marketers at entrepreneurial brands.” Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
21	Amplifyd	Exact match	London, United KingdomHQ recorded Sep 6, 2026	11-50	32 contacts →
	Exact match “Most high-growth advertisers eventually hit a performance ceiling and assume the answer is to spend more or hire more.” Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
22	Velocity Partners	Exact match	London, United KingdomHQ recorded Sep 6, 2026	51-200	32 contacts →
	Exact match “B2B marketing has a big pipeline problem.” Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
23	Mayfair Digital Agency	Exact match	London, United KingdomHQ recorded Sep 6, 2026	11-50	32 contacts →
	Exact match “We are a digital media agency founded by the young and experienced mind that has been serving in this sector for 13 years, and the young and academic mind that has been serving in…” Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
24	RFZ Digital	Exact match	London, United KingdomHQ recorded Sep 6, 2026	11-50	31 contacts →
	Exact match “Step into the dynamic realm of digital innovation and creativity at RFZ Digital.” Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
25	The Good Marketer	Exact match	London, United KingdomHQ recorded Sep 6, 2026	11-50	30 contacts →
	Exact match “The Good Marketer is a Digital Marketing Agency based in London which works with SMEs; helping them grow, expand and reach new heights in the digital space.” Recorded in the RevenueBase company graph · Sep 6, 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 “startup marketing 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 2,640 startup marketing agencies based in London, United Kingdom

See the full list, filter by size, metro and specialty, and access 1,873 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Startup marketing agencies based in London, United Kingdom at a glance

As of Sep 6, 2026

12.5%Verified-email coverage

5.7Average contacts per company

1-10Median size (employees)

Sep 6, 2026Page data refreshed

Companies by employee count

1-10

2,020

11-50

539

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

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 2,640 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 “startup marketing 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 1,873 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 6, 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.

Startup marketing 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 “startup marketing agencies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many startup marketing agencies are there based in London, United Kingdom?

RevenueBase identified 2,640 company matches for startup marketing 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?

E Intelligence 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 startup marketing agencies?

London leads the United Kingdom with 2,640 company records, followed by Manchester (296) and Birmingham (193).

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 1,873 professional contacts with verified work emails tracked across these 2,640 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 6, 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.