Company lists · Data verified August 2026

Top 25 Activation marketing agencies based in London, United Kingdom

Name: Activation marketing agencies based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 1,813 companies tracked

There are 1,813 activation marketing agencies headquartered in London, United Kingdom (RevenueBase, August 2026). RevenueBase tracks 33,794 professional contacts across them, including 7,306 with verified work emails and 3,302 with mobile numbers. London is the largest hub.

This list covers activation 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. Data current as of August 28, 2026.

1,813Companies

33,794Contacts tracked

7,306Verified emails

3,302Mobile numbers

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

Ranked by team size

Top 25 of 1,813 activation marketing agencies based in London, United Kingdom, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	CARAT	London	5,001-10,000	2,229	697
2	MKTG	London	1,001-5,000	1,501	191
3	NP Digital	London	1,001-5,000	862	306
4	Wongdoody	London	1,001-5,000	846	472
5	IRIS	London	501-1,000	722	215
6	MVF	London	201-500	417	246
7	Entourage	London	51-200	363	81
8	Blackjack Promotions	London	1,001-5,000	346	8
9	Newbase	London	501-1,000	282	28
10	Identity	London	51-200	259	115
11	Exposure	London	51-200	216	84
12	Amplify	London	201-500	180	123
13	Grey London	London	201-500	158	69
14	Unit9	London	51-200	138	63
15	Pablo London	London	51-200	135	78
16	METIA	London	201-500	131	44
17	The Mission Group	London	1,001-5,000	114	70
18	Ride Shotgun	London	51-200	112	59
19	Right Formula	London	51-200	109	80
20	Wonderhood Studios	London	51-200	107	79
21	Sweet&chilli	London	51-200	104	35
22	John DOE	London	51-200	96	32
23	The River Group	London	51-200	89	54
24	Emc3 Collective	London	51-200	86	57
25	The Gate London	London	51-200	85	62

Showing 25 of 1,813 activation marketing agencies based in London, United Kingdom

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 7,306 reachable decision-makers.

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

As of Aug 28, 2026

1-10Median size (employees)

LondonLargest hub · 1813 HQs

3,302Contacts with mobile numbers

54Emails re-verified in last 30 days

Companies by employee count

1-10

1,075

11-50

576

51-200

122

201-500

501-1,000

1,001-5,000

5,001-10,000

Activation marketing agencies by metro in the United Kingdom

Metro	Companies
Activation marketing agencies in London	1813
Activation marketing agencies in Manchester	196
Activation marketing agencies in Leeds	90
Activation marketing agencies in Birmingham	89
Activation marketing agencies in Bristol	58
Activation marketing agencies in Glasgow	50
Activation marketing agencies in Edinburgh	42

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “activation marketing agencies”, with match quality audited by blind human judging, and headquartered in London, United Kingdom.
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: Contact records re-verify on a rolling cadence; 54 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

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

There are 1,813 activation marketing agencies headquartered in London, United Kingdom as of August 2026 (RevenueBase).

What is the largest company on this list?

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

Which city has the most activation marketing agencies?

London leads with 1813 headquartered companies, followed by Manchester (196) and Leeds (90).

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 7,306 verified decision-maker contacts tracked across these 1,813 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.