Company lists · Data refreshed September 2026

Top 25 Business growth marketing agencies based in Belfast, United Kingdom

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

Compiled by the RevenueBase Data Team Data refreshed Sep 23, 2026 92 companies tracked

RevenueBase identified 92 business growth marketing agencies headquartered in Belfast, United Kingdom as of September 2026 and tracks 400 professional contacts across them, including 178 with verified work emails. Across the United Kingdom, London is the largest hub for this category (5,201 companies); Belfast has 92.

This list covers business growth marketing agencies headquartered in Belfast, 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 23, 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 23, 2026 86% judged on-target in blind review

92Companies

400Contacts tracked

178Verified emails

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The 25 largest business growth marketing agencies based in Belfast, United Kingdom

Ranked by team size

Top 25 of 92 business growth marketing agencies based in Belfast, United Kingdom, ranked by team size, largest first. Data refreshed Sep 23, 2026. RevenueBase Smart Search rates how each company's information relates to business growth 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	Loud Mouth Media LTD	Partial evidence	Belfast, United KingdomHQ checked Sep 23, 2026	11-50	27 contacts →
	Partial evidence “Loud Mouth Media is a multi-award winning performance marketing agency with offices in Belfast, Glasgow, London and Dublin- 2026 Google Premier Partner - PPC Agency of the Year…” Source: RevenueBase Database · checked Sep 23, 2026
2	Whitenoise	Indirect evidence	Belfast, United KingdomHQ checked Sep 23, 2026	11-50	22 contacts →
	Indirect evidence “Welcome to Whitenoise, a creative agency committed to transforming global brands through compelling visual experiences.” Source: RevenueBase Database · checked Sep 23, 2026
3	MXB Agency	Partial evidence	Belfast, United KingdomHQ checked Sep 23, 2026	11-50	18 contacts →
	Partial evidence “We're an award-winning, full-service marketing agency specialising in brand, strategy, creative and digital.” Source: RevenueBase Database · checked Sep 23, 2026
4	Beingonline	Indirect evidence	Belfast, United KingdomHQ checked Sep 23, 2026	11-50	17 contacts →
	Indirect evidence “The service-led digital agency.” Source: RevenueBase Database · checked Sep 23, 2026
5	Digital 24	Partial evidence	Belfast, United KingdomHQ checked Sep 23, 2026	1-10	14 contacts →
	Partial evidence “Digital Marketing Done Right.” Source: RevenueBase Database · checked Sep 23, 2026
6	Elevator	Indirect evidence	Belfast, United KingdomHQ checked Sep 23, 2026	1-10	10 contacts →
	Indirect evidence “We are a solutions-driven creative agency made up of like-minded individuals who share a passion for creating meaningful campaigns and activations.” Source: RevenueBase Database · checked Sep 23, 2026
7	Studio Mint	Partial evidence	Belfast, United KingdomHQ checked Sep 23, 2026	1-10	10 contacts →
	Partial evidence “At Studio Mint, we combine creativity with strategy to build brands that engage, create digital experiences that connect, and run marketing campaigns that get results.” Source: RevenueBase Database · checked Sep 23, 2026
8	Vudu Digital	Partial evidence	Belfast, United KingdomHQ checked Sep 23, 2026	11-50	8 contacts →
	Partial evidence “Vudu Digital (formerly WSI Digital Web) have been providing web design, eCommerce and the full suite of digital marketing services to UK and Irish clients since 2007.” Source: RevenueBase Database · checked Sep 23, 2026
9	YY Group	Indirect evidence	Belfast, United KingdomHQ checked Sep 23, 2026	1-10	8 contacts →
	Indirect evidence “At some point, virtually every company will face a situation where they have no answers to challenging sales performance problems.” Source: RevenueBase Database · checked Sep 23, 2026
10	Fourum	Indirect evidence	Belfast, United KingdomHQ checked Sep 23, 2026	1-10	7 contacts →
	Indirect evidence “Our Process It’s easy to be a creative agency that makes beautiful things.” Source: RevenueBase Database · checked Sep 23, 2026
11	Part Three Digital	Partial evidence	Belfast, United KingdomHQ checked Sep 23, 2026	1-10	6 contacts →
	Partial evidence “The Spider Awards - Best Small Agency 2022 Digital Media Awards - Best Newcomer 2022 A digital agency, specialising in social media & search marketing.” Source: RevenueBase Database · checked Sep 23, 2026
12	WEB Bureau	Indirect evidence	Belfast, United KingdomHQ checked Sep 23, 2026	11-50	6 contacts →
	Indirect evidence “Web design and build” Source: RevenueBase Database · checked Sep 23, 2026
13	Erudite Digital Solutions	Partial evidence	Belfast, United KingdomHQ checked Sep 23, 2026	1-10	5 contacts →
	Partial evidence “We are a digital marketing company that helps businesses of all sizes develop online marketing strategies and deliver high quality, regular content.” Source: RevenueBase Database · checked Sep 23, 2026
14	Gekkoshot	Partial evidence	Belfast, United KingdomHQ checked Sep 23, 2026	1-10	5 contacts →
	Partial evidence “We offer digital marketing services including, web design, brand creation, social media promotion and SEO services.” Source: RevenueBase Database · checked Sep 23, 2026
15	AY	Indirect evidence	Belfast, United KingdomHQ checked Sep 23, 2026	1-10	5 contacts →
	Indirect evidence “We are a creative studio delivering meaningful impact through the thoughtful application of business expertise, creative vision and technical excellence.” Source: RevenueBase Database · checked Sep 23, 2026
16	Genesis Belfast	Indirect evidence	Belfast, United KingdomHQ checked Sep 23, 2026	11-50	5 contacts →
	Indirect evidence “Genesis is a multi-award winning full service agency, offering advertising, design, digital and consulting services.” Source: RevenueBase Database · checked Sep 23, 2026
17	Growweb	Partial evidence	Belfast, United KingdomHQ checked Sep 23, 2026	1-10	4 contacts →
	Partial evidence “GrowWeb is a multi-award winning digital advertising agency specialising in Search, Display, YouTube and Social advertising.” Source: RevenueBase Database · checked Sep 23, 2026
18	Real Time Digital	Partial evidence	Belfast, United KingdomHQ checked Sep 23, 2026	1-10	4 contacts →
	Partial evidence “Real Time Digital is a digital marketing agency providing a fully managed service across web, social, search, display and video channels.” Source: RevenueBase Database · checked Sep 23, 2026
19	BIG Rock Digital	Partial evidence	Belfast, United KingdomHQ checked Sep 23, 2026	1-10	4 contacts →
	Partial evidence “BigRockDigital.io Big Rock Digital is a leading Digital Marketing Agency offering a comprehensive range of services including Google AdWords, Facebook Advertising, Website Design…” Source: RevenueBase Database · checked Sep 23, 2026
20	Silver Apples Digital LTD	Partial evidence	Belfast, United KingdomHQ checked Sep 23, 2026	1-10	4 contacts →
	Partial evidence “Welcome to Silver Apples Digital – Your Strategic Partner in Digital Marketing Excellence!” Source: RevenueBase Database · checked Sep 23, 2026
21	Part TWO	Indirect evidence	Belfast, United KingdomHQ checked Sep 23, 2026	1-10	3 contacts →
	Indirect evidence “Part Two is an intuitive, creative partner for those striving to distinguish themselves.” Source: RevenueBase Database · checked Sep 23, 2026
22	SQC Digital	Partial evidence	Belfast, United KingdomHQ checked Sep 23, 2026	1-10	3 contacts →
	Partial evidence “SQC Digital, is a digital marketing agency that creates innovative digital marketing strategies and turn them into easily measured, successful campaigns, via Google Ads, YouTube…” Source: RevenueBase Database · checked Sep 23, 2026
23	Four Gears	Indirect evidence	Belfast, United KingdomHQ checked Sep 23, 2026	11-50	2 contacts →
	Indirect evidence “Four Gears: Your Business Catalyst Boasting 40+ years of industry knowledge, Four Gears seamlessly fuses global reach with a local touch.” Source: RevenueBase Database · checked Sep 23, 2026
24	Summit Consulting	Strong evidence	Belfast, United KingdomHQ checked Sep 23, 2026	1-10	2 contacts →
	Strong evidence “Grow your business with social media, digital content, Facebook Ads, email marketing and digital marketing training.” Source: RevenueBase Database · checked Sep 23, 2026
25	Cucamelon Marketing	Indirect evidence	Belfast, United KingdomHQ checked Sep 23, 2026	1-10	2 contacts →
	Indirect evidence “Whether you are an established brand or a new business, we are here to help bring your ideas for your brand to life.” Source: RevenueBase Database · checked Sep 23, 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: business growth 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 business growth marketing agencies.
Partial evidence: Its own public description names part of business growth marketing agencies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name business growth 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 92 business growth marketing agencies based in Belfast, United Kingdom

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Business growth marketing agencies based in Belfast, United Kingdom at a glance

As of Sep 23, 2026

44.5%Verified-email coverage

4.3Average contacts per company

1-10Median size (employees)

Sep 23, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

Email recency for this list is measured across the whole United Kingdom list rather than for Belfast, so it is reported there. Company counts and contact totals on this page are exact for Belfast, over 92 companies.

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 business growth 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 Belfast, United Kingdom whose own description of what they do matches “business growth 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 business growth 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 business growth marketing agencies, and records with no verified work email. Companies headquartered outside Belfast 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, 178 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 23, 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.

Business growth marketing agencies by metro in the United Kingdom

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 business growth 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 business growth marketing agencies are there based in Belfast, United Kingdom?

RevenueBase identified 92 business growth marketing agencies headquartered in Belfast, 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?

Loud Mouth Media LTD, headquartered in Belfast, tops this list with the largest team on record.

Which city in the United Kingdom has the most business growth marketing agencies?

London leads the United Kingdom with 5,201 headquartered companies, followed by Manchester (636) and Birmingham (365). Belfast has 92.

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 178 verified decision-maker contacts tracked across these 92 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 23, 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.