Company lists · Data refreshed September 2026

Top 25 Event marketing agencies based in London, United Kingdom

Name: Event 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 12, 2026 1,335 companies tracked

RevenueBase identified 1,335 event marketing agencies headquartered in London, United Kingdom as of September 2026 and tracks 15,629 professional contacts across them, including 4,052 with verified work emails and 1,281 with mobile numbers. London is the largest hub.

This list covers event marketing 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 12, 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 12, 2026 86% judged on-target in blind review

1,335Companies

15,629Contacts tracked

4,052Verified emails

1,281Mobile numbers

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

Ranked by team size

Top 25 of 1,335 event marketing agencies based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 12, 2026. RevenueBase Smart Search rates how each company's information relates to event marketing 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	Entourage	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	51-200	370 contacts →
	Indirect evidence “In a world where everyone’s shouting the same thing, whisper something truly distinctive in all the right ears.” Source: RevenueBase Database · checked Sep 12, 2026
2	Blackjack Promotions	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	1,001-5,000	348 contacts →
	Indirect evidence “Blackjack are specialists in human connection, with expertise in the creation, delivery and deployment of travel retail and experiential campaigns.” Source: RevenueBase Database · checked Sep 12, 2026
3	Spring Studios	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	201-500	279 contacts →
	Indirect evidence “Spring is a global creative agency, headquartered in Europe, devoted to creating the exceptional for the world's most prestigious brands.” Source: RevenueBase Database · checked Sep 12, 2026
4	Event Concept	Partial evidence	London, United KingdomHQ checked Sep 12, 2026	51-200	275 contacts →
	Partial evidence “Event Concept is a creative event agency and production company.” Source: RevenueBase Database · checked Sep 12, 2026
5	Premier	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	51-200	272 contacts →
	Indirect evidence “Creative communications for entertainment, arts and culture.” Source: RevenueBase Database · checked Sep 12, 2026
6	TRO	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	51-200	258 contacts →
	Indirect evidence “Converting consumer passions into sales potential.” Source: RevenueBase Database · checked Sep 12, 2026
7	Elevate Global	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	51-200	254 contacts →
	Indirect evidence “Elevate Global is the award-winning staffing partner for brand experiences, named Staffing Agency of the Year at the Campaign Experience Awards 2025.” Source: RevenueBase Database · checked Sep 12, 2026
8	Trivandi	Partial evidence	London, United KingdomHQ checked Sep 12, 2026	51-200	145 contacts →
	Partial evidence “Trivandi transforms ambitious visions into unforgettable experiences for major events, venues, destinations and sports organisations.” Source: RevenueBase Database · checked Sep 12, 2026
9	People	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	11-50	142 contacts →
	Indirect evidence “We believe in the power of shared experience to transform lives and shape culture.” Source: RevenueBase Database · checked Sep 12, 2026
10	Strata	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	51-200	132 contacts →
	Indirect evidence “Strata is an award-winning agency crafting unforgettable brand experiences through a multi-layered offering.” Source: RevenueBase Database · checked Sep 12, 2026
11	SMYLE	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	51-200	120 contacts →
	Indirect evidence “Smyle is a brand experience agency that develops impactful in-person activations, imaginative digital experiences, and compelling content for some of the world’s most loved brands.” Source: RevenueBase Database · checked Sep 12, 2026
12	Dewynters	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	51-200	118 contacts →
	Indirect evidence “We are DEWYNTERS, the leading integrated advertising agency for live entertainment.” Source: RevenueBase Database · checked Sep 12, 2026
13	Tba. Group	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	51-200	110 contacts →
	Indirect evidence “We turn big ideas into brand experiences that stir emotions, change perceptions, fuel conversations and inspire action.” Source: RevenueBase Database · checked Sep 12, 2026
14	Sweet&chilli	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	51-200	109 contacts →
	Indirect evidence “We are Sweet & Chilli.” Source: RevenueBase Database · checked Sep 12, 2026
15	Right Formula	Partial evidence	London, United KingdomHQ checked Sep 12, 2026	51-200	108 contacts →
	Partial evidence “Right Formula is an award-winning global sports marketing agency that handles all aspects of sports sponsorship to ensure that chosen partnerships deliver against their desired…” Source: RevenueBase Database · checked Sep 12, 2026
16	Havas CX Helia	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	201-500	107 contacts →
	Indirect evidence “From pigeons to platforms, from news agency to integrated communications services, our story is one of constant reinvention.” Source: RevenueBase Database · checked Sep 12, 2026
17	Seen Presents	Partial evidence	London, United KingdomHQ checked Sep 12, 2026	11-50	95 contacts →
	Partial evidence “Campaign Experience Awards: Creative Experience Agency of the Year (small) 2025 Event Team of the Year 2023 & 2024 The Drum: Leader of the Year 2023 Creativepool: Small Agency of…” Source: RevenueBase Database · checked Sep 12, 2026
18	J2	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	51-200	89 contacts →
	Indirect evidence “J2 brings spaces and places to life for the world’s most ambitious brands.” Source: RevenueBase Database · checked Sep 12, 2026
19	Ingenuity	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	51-200	82 contacts →
	Indirect evidence “Ingenuity creates new business relationships between Agencies and Brands For Agencies: We help them find, meet and win new clients through content & insight led Lead Generation…” Source: RevenueBase Database · checked Sep 12, 2026
20	KRU Live	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	11-50	80 contacts →
	Indirect evidence “Kru Live is a global brand experience agency powered by people.” Source: RevenueBase Database · checked Sep 12, 2026
21	Kreate	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	51-200	80 contacts →
	Indirect evidence “The most compelling experiences can only be achieved by people with the imagination and drive to get things done.” Source: RevenueBase Database · checked Sep 12, 2026
22	Chillisauce	Partial evidence	London, United KingdomHQ checked Sep 12, 2026	51-200	76 contacts →
	Partial evidence “Chillisauce is one of the UK’s largest and fastest growing event agencies, delivering thousands of memorable activities and experiences for groups and companies across Europe…” Source: RevenueBase Database · checked Sep 12, 2026
23	Cheerful Twentyfirst	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	51-200	73 contacts →
	Indirect evidence “Your audience is your most powerful asset, and we’re determined to inspire them.” Source: RevenueBase Database · checked Sep 12, 2026
24	Collaborate	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	51-200	69 contacts →
	Indirect evidence “We Collaborate.” Source: RevenueBase Database · checked Sep 12, 2026
25	Hel's	Partial evidence	London, United KingdomHQ checked Sep 12, 2026	11-50	66 contacts →
	Partial evidence “HEL's is a brand experience and live events agency, creating people-powered activations.” Source: RevenueBase Database · checked Sep 12, 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: event marketing 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 event marketing agencies.
Partial evidence: Its own public description names part of event marketing agencies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name event marketing 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 1,335 event marketing agencies based in London, United Kingdom

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

As of Sep 12, 2026

25.9%Verified-email coverage

8.2%Mobile-number coverage

11.7Average contacts per company

1-10Median size (employees)

79.3%Largest-city concentration · London

Sep 12, 2026Page data refreshed

Companies by employee count

1-10

888

11-50

340

51-200

201-500

501-1,000

1,001-5,000

Freshness & accuracy

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

Email last verified

Median 15.0d

3,4060–30

60631–60

1961–90

290–180

19180+

Company record updated

Median 75.0d

00–30

5,39231–60

7,61661–90

1,94890–180

673180+

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 event marketing 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 “event marketing 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 event marketing 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 event marketing 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, 4,052 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 12, 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.

Event marketing agencies by metro in the United Kingdom

Event marketing agencies in London1059
Event marketing agencies in Manchester85
Event marketing agencies in Bristol48
Event marketing agencies in Leeds44
Event marketing agencies in Birmingham37
Event marketing agencies in Glasgow32
Event marketing agencies in Edinburgh29

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 event marketing 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 event marketing agencies are there based in London, United Kingdom?

RevenueBase identified 1,335 event marketing 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?

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

Which city has the most event marketing agencies?

London leads with 1059 headquartered companies, followed by Manchester (85) and Bristol (48).

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 4,052 verified decision-maker contacts tracked across these 1,335 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 12, 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.