Company lists · Data refreshed September 2026

Top 24 B2B event agencies based in London, United Kingdom

RevenueBase identified 782 company matches for B2B event agencies associated with London, United Kingdom as of September 2026 and tracks 14,951 professional contacts across them, including 4,371 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers company matches for B2B event 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 21, 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 21, 2026 How this list was built
782Companies
14,951Contacts tracked
4,371Verified emails
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The 24 largest B2B event agencies based in London, United Kingdom

Ranked by team size
Top 24 of 782 company matches for B2B event agencies based in London, United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 21, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchLondon, United KingdomHQ recorded Sep 21, 20261,001-5,000769 contacts →

Exact match

“Clarion Events is the world's largest privately owned event and exhibition organiser, known for our innovative approach, market-leading super brands and digital products.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
2Exact matchLondon, United KingdomHQ recorded Sep 21, 2026501-1,000590 contacts →

Exact match

“When people come together, powerful things happen.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
3Exact matchLondon, United KingdomHQ recorded Sep 21, 2026501-1,000554 contacts →

Exact match

“At CloserStill, we strive to deliver the best.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
4Exact matchLondon, United KingdomHQ recorded Sep 21, 20261,001-5,000507 contacts →

Exact match

“UBM combined with Informa in June 2018, creating a single, leading B2B information services group, and the largest B2B events and exhibitions organiser in the world.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
5Exact matchLondon, United KingdomHQ recorded Sep 21, 202651-200370 contacts →

Exact match

“In a world where everyone’s shouting the same thing, whisper something truly distinctive in all the right ears.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
6Exact matchLondon, United KingdomHQ recorded Sep 21, 2026201-500289 contacts →

Exact match

“We deliver full-service B2B marketing solutions for world-class customer experiences – with an eye always toward the future.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
7Exact matchLondon, United KingdomHQ recorded Sep 21, 202651-200275 contacts →

Exact match

“Event Concept is a creative event agency and production company.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
8Exact matchLondon, United KingdomHQ recorded Sep 21, 202651-200254 contacts →

Exact match

“Elevate Global is the award-winning staffing partner for brand experiences, named Staffing Agency of the Year at the Campaign Experience Awards 2025.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
9Exact matchLondon, United KingdomHQ recorded Sep 21, 2026201-500246 contacts →

Exact match

“To serve our world, nurturing relationships and developing opportunities” We are Montgomery Group.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
10Exact matchLondon, United KingdomHQ recorded Sep 21, 202611-50142 contacts →

Exact match

“We believe in the power of shared experience to transform lives and shape culture.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
11Exact matchLondon, United KingdomHQ recorded Sep 21, 202610001+141 contacts →

Exact match

“Reuters Events is part of the Reuters News division of Thomson Reuters.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
12Exact matchLondon, United KingdomHQ recorded Sep 21, 202651-200139 contacts →

Exact match

“Publicis Pro is the specialist B2B marketing agency within Publicis Groupe, the world's number one marketing holding group.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
13Exact matchLondon, United KingdomHQ recorded Sep 21, 202651-200132 contacts →

Exact match

“Strata is an award-winning agency crafting unforgettable brand experiences through a multi-layered offering.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
14Exact matchLondon, United KingdomHQ recorded Sep 21, 2026501-1,000115 contacts →

Exact match

“Tarsus Group delivers B2B events across the globe along with digital media & industry-focussed publications.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
15Exact matchLondon, United KingdomHQ recorded Sep 21, 202611-50112 contacts →

Exact match

“Vostock Capital is an international organiser of industry congresses and conferences that accelerate market growth and help companies find partners, clients, and investment…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
16Exact matchLondon, United KingdomHQ recorded Sep 21, 202651-200110 contacts →

Exact match

“We turn big ideas into brand experiences that stir emotions, change perceptions, fuel conversations and inspire action.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
17Exact matchLondon, United KingdomHQ recorded Sep 21, 202651-200101 contacts →

Exact match

“Kisaco Research works with the early adopters and leaders of growth markets in driving their respective industries forward and in providing the right knowledge, learning and…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
18Exact matchLondon, United KingdomHQ recorded Sep 21, 202651-20098 contacts →

Exact match

“Arena International Events Group provides a comprehensive range of event platforms for multiple industry sectors.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
19Exact matchLondon, United KingdomHQ recorded Sep 21, 202611-5095 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
20Exact matchLondon, United KingdomHQ recorded Sep 21, 2026201-50090 contacts →

Exact match

“Arc is a B2B events, data, and media platform, backed by investment funds managed by EagleTree Capital.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
21Exact matchLondon, United KingdomHQ recorded Sep 21, 2026201-50088 contacts →

Exact match

“Driving Innovation - One Connection at a Time: We run over 100 industry leading, annual conferences worldwide, along with a full complement of content marketing services, and…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
22Exact matchLondon, United KingdomHQ recorded Sep 21, 20261,001-5,00086 contacts →

Exact match

“THIS IS B2B WITHOUT BORDERS THIS IS BBN BBN breaks boundaries.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
23Exact matchLondon, United KingdomHQ recorded Sep 21, 202651-20082 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
24Exact matchLondon, United KingdomHQ recorded Sep 21, 202651-20076 contacts →

Exact match

“We specialise in creating exceptional live events across the UK and Europe, with a strong emphasis on enhancing the audience experience.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase

Showing 24 of 782 B2B event agencies based in London, United Kingdom

See the full list, filter by size, metro and specialty, and access 4,371 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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B2B event agencies based in London, United Kingdom at a glance

As of Sep 21, 2026
29.2%Verified-email coverage
19.1Average contacts per company
1-10Median size (employees)
Sep 21, 2026Page data refreshed

Companies by employee count

1-10
479
11-50
209
51-200
62
201-500
12
501-1,000
8
1,001-5,000
8
5,001-10,000
1
10001+
2

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 782 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 “B2B event 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 4,371 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 21, 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.

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 “B2B event agencies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many B2B event agencies are there based in London, United Kingdom?

RevenueBase identified 782 company matches for B2B event 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?

Clarion Events 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 B2B event agencies?

London leads the United Kingdom with 782 company records, followed by Manchester (60) and Bristol (55).

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 4,371 professional contacts with verified work emails tracked across these 782 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 21, 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.