Company lists · Data refreshed September 2026

Top 25 Online casino marketing agencies based in the United Kingdom

Name: Online casino marketing agencies based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 273 companies tracked

RevenueBase identified 273 online casino marketing agencies headquartered in the United Kingdom as of September 2026 and tracks 3,106 professional contacts across them, including 569 with verified work emails and 240 with mobile numbers. London is the largest hub.

This list covers online casino marketing agencies headquartered in the 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, how directly it supports the match, and when it was last checked. Data refreshed September 5, 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 HQ checked on every row Match evidence on every row Refreshed Sep 5, 2026 86% judged on-target in blind review

273Companies

3,106Contacts tracked

569Verified emails

240Mobile numbers

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The 25 largest online casino marketing agencies based in the United Kingdom

Ranked by team size

Top 25 of 273 online casino marketing agencies based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names online casino marketing agencies: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	Gimo Global Interactive Marketing Online LTDPartial evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	207
	“GIMO is an award-winning independent marketing agency and software developer specialising in services within the iGaming industry.” Source: company website · checked Sep 5, 2026
2	ReceptionalIndirect evidence	Bedford, United KingdomHQ checked Sep 5, 2026	n/a	157
	“We're a digital acquisition agency for iGaming operators, technically.” Source: company website · checked Sep 5, 2026
3	Casimba GamingPartial evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	108
	“Casimba Gaming, offering customers an even greater range of products and services while further solidifying its position in the iGaming industry.” Source: company website · checked Sep 5, 2026
4	BAMBUStrong evidence	London, United KingdomHQ checked Sep 5, 2026	n/a	45
	“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…” Source: company website · checked Sep 5, 2026
5	QIH GroupPartial evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	38
	“Founded in 2014, QiH is an international group of companies focused on digital marketing within the iGaming industry and active in multiple markets around the globe.” Source: company website · checked Sep 5, 2026
6	15 Marketing LTDStrong evidence	Watford, United KingdomHQ checked Sep 5, 2026	11-50	33
	“At 15 Marketing, we specialise in providing both marketing and development services to clients working in the online gaming industry, with the goal of helping them grow in this…” Source: company website · checked Sep 5, 2026
7	Somebody DigitalIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	32
	“Somebody is a full service digital agency with a one track mind – getting you customers, not just clicks.” Source: company website · checked Sep 5, 2026
8	OCEREIndirect evidence	Cheltenham, United KingdomHQ checked Sep 5, 2026	51-200	31
	“SEO, PPC, Outreach & Lead Generation.” Source: company website · checked Sep 5, 2026
9	bitmedia.ioPartial evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	30
	“Crypto Marketing done right!” Source: company website · checked Sep 5, 2026
10	Fortuna Gaming LTDPartial evidence	Newcastle Upon Tyne, United KingdomHQ checked Sep 5, 2026	11-50	26
	“We are a team of passionate and responsible digital marketing iGaming industry professionals.” Source: company website · checked Sep 5, 2026
11	TAG MediaPartial evidence	Tonbridge, United KingdomHQ checked Sep 5, 2026	11-50	26
	“TAG Media specialises in affiliate marketing.” Source: company website · checked Sep 5, 2026
12	Digital Next, UKStrong evidence	Manchester, United KingdomHQ checked Sep 5, 2026	51-200	25
	“Digital Next helps ambitious businesses grow online through SEO, paid media, web development, content, AI search visibility and performance marketing.” Source: company website · checked Sep 5, 2026
13	Activewin MarketingPartial evidence	Manchester, United KingdomHQ checked Sep 5, 2026	51-200	22
	“Welcome to ActiveWin, where digital marketing mastery meets innovative solutions.” Source: company website · checked Sep 5, 2026
14	AIR Social Marketing AgencyIndirect evidence	Guildford, United KingdomHQ checked Sep 5, 2026	11-50	20
	“We are inquisitive minds with big personalities and one goal – to help you get your message out there and generate genuine leads.” Source: company website · checked Sep 5, 2026
15	GameonPartial evidence	Onchan, United KingdomHQ checked Sep 5, 2026	11-50	19
	“GameOn is a full-service marketing agency specialising in the B2B iGaming sector.” Source: company website · checked Sep 5, 2026
16	Optimum Click LTDPartial evidence	Manchester, United KingdomHQ checked Sep 5, 2026	11-50	19
	“All your essential performance marketing - all in one place.” Source: company website · checked Sep 5, 2026
17	DIONYPartial evidence	Hull, United KingdomHQ checked Sep 5, 2026	11-50	17
	“We’re a strategy-first performance marketing agency for ambitious brands that want to scale with clarity and control.” Source: company website · checked Sep 5, 2026
18	UP Hotel AgencyPartial evidence	Rugby, United KingdomHQ checked Sep 5, 2026	11-50	17
	“The UP Hotel Agency team offers a diverse set of skills related to the world of marketing hotels on the internet.” Source: company website · checked Sep 5, 2026
19	Olikaone LTDPartial evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	15
	“OLIKAONE LTD is a fast growing digital media company specialized in the online gaming industry with offices in London.” Source: company website · checked Sep 5, 2026
20	DigitonicPartial evidence	Glasgow, United KingdomHQ checked Sep 5, 2026	11-50	15
	“Hello and welcome to Digitonic We’re a specialist growth marketing agency helping brands thrive in regulated, high-stakes markets.” Source: company website · checked Sep 5, 2026
21	Rise The BETPartial evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	14
	“We are performance-driven experts in Sports Betting & iGaming Marketing.” Source: company website · checked Sep 5, 2026
22	Page1Partial evidence	St. Austell, United KingdomHQ checked Sep 5, 2026	11-50	12
	“With a proven track record, across national and international markets, we deliver innovative full-service digital marketing solutions.” Source: company website · checked Sep 5, 2026
23	BattlecatPartial evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	11
	“Battlecat were formed in 2022, from a group of marketing, design and tech professionals who wanted to do i-gaming differently.” Source: company website · checked Sep 5, 2026
24	SemseoIndirect evidence	Londres, United KingdomHQ checked Sep 5, 2026	11-50	11
	“Founded in 2004, SEMSEO is a Google Partner Premier agency specialized in the creation and optimization of advertising campaigns on search engines and social networks.” Source: company website · checked Sep 5, 2026
25	Reposition GroupPartial evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	11
	“Reposition.co.uk - UK, Europe and USA Reposition.asia - Thailand and South East Asia Reposition is an SEO & Branding Digital Marketing Agency.” Source: company website · checked Sep 5, 2026

Showing 25 of 273 online casino marketing agencies based in the United Kingdom

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Online casino marketing agencies based in the United Kingdom at a glance

As of Sep 5, 2026

1-10Median size (employees)

LondonLargest hub · 116 HQs

240Contacts with mobile numbers

Sep 5, 2026Data refreshed

Companies by employee count

1-10

181

11-50

51-200

201-500

501-1,000

Verified emails by last verification

0–30

534

31–60

61–90

90–180

180+

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 online casino marketing agencies, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United Kingdom whose own description of what they do matches “online casino marketing agencies”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among online casino marketing agencies, and records with no verified work email. Companies headquartered outside United Kingdom 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 an evidence 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, 569 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 5, 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.

Online casino marketing agencies by metro

Online casino marketing agencies in London116

Frequently asked

How many online casino marketing agencies are there based in the United Kingdom?

RevenueBase identified 273 online casino marketing agencies headquartered in the 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?

Gimo Global Interactive Marketing Online LTD, headquartered in London, tops this list with the largest team on record.

Which city has the most online casino marketing agencies?

London leads with 116 headquartered companies, followed by Manchester (13) and Birmingham (6).

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 569 verified decision-maker contacts tracked across these 273 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 5, 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.