Company lists · Data refreshed September 2026
Top 25 First web marketing agencies based in Belfast, United Kingdom
RevenueBase identified 72 first web marketing agencies headquartered in Belfast, United Kingdom as of September 2026 and tracks 220 professional contacts across them, including 77 with verified work emails. London is the largest hub.
This list covers first web 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 24, 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.
The 25 largest first web marketing agencies based in Belfast, United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 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 24, 2026Thanks. The Data Team will review it. | |||||
| 2 | 14 contacts → | ||||
Partial evidence “Digital Marketing Done Right.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 3 | 8 contacts → | ||||
Strong 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 24, 2026Thanks. The Data Team will review it. | |||||
| 4 | 7 contacts → | ||||
Partial evidence “Codefixer is a data driven digital marketing agency specialising in SEO and PPC producing exceptional results.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 5 | 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 24, 2026Thanks. The Data Team will review it. | |||||
| 6 | 6 contacts → | ||||
Partial evidence “Web design and build” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 7 | 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 24, 2026Thanks. The Data Team will review it. | |||||
| 8 | 5 contacts → | ||||
Strong evidence “We offer digital marketing services including, web design, brand creation, social media promotion and SEO services.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 9 | 4 contacts → | ||||
Indirect evidence “GrowWeb is a multi-award winning digital advertising agency specialising in Search, Display, YouTube and Social advertising.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 10 | 4 contacts → | ||||
Strong 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 24, 2026Thanks. The Data Team will review it. | |||||
| 11 | 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 24, 2026Thanks. The Data Team will review it. | |||||
| 12 | 4 contacts → | ||||
Partial evidence “Welcome to Silver Apples Digital – Your Strategic Partner in Digital Marketing Excellence!” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 13 | 3 contacts → | ||||
Partial evidence “Broadcast Media Marketing offers Targeted Digital Marketing.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 14 | 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 24, 2026Thanks. The Data Team will review it. | |||||
| 15 | 3 contacts → | ||||
Partial evidence “Neo Digital Media is a digital content production partnership that specialises in the creation of digital marketing materials.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 16 | 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 24, 2026Thanks. The Data Team will review it. | |||||
| 17 | 2 contacts → | ||||
Partial evidence “Grow your business with social media, digital content, Facebook Ads, email marketing and digital marketing training.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 18 | 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 24, 2026Thanks. The Data Team will review it. | |||||
| 19 | 2 contacts → | ||||
Indirect evidence “Chikara Consulting provides businesses with the necessary tools in order to succeed in the online environment.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 20 | 1 contacts → | ||||
Partial evidence “Square One is a digital marketing and content consultancy that provides guidance, strategy, hands-on support and skills development to help your team reach your target audiences…” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 21 | 1 contacts → | ||||
Indirect evidence “We help businesses standout with highly engaging creative content!” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 22 | 1 contacts → | ||||
Partial evidence “Digital Marketing Strategist offering digital marketing training for small businesses and done for you campaign management for both email marketing & social media advertising.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 23 | 1 contacts → | ||||
Partial evidence “A Marketing & Design Consultancy based in Belfast.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 24 | 1 contacts → | ||||
Partial evidence “At JFW Marketing Ltd, we know that to truly succeed online, you need a constant stream of top-tier visual content.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 25 | 1 contacts → | ||||
Partial evidence “The Reality Marketing ethos is simple; we want to offer our clients the tools to help them succeed in the ever growing digital business world.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
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: first web 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 first web marketing agencies.
- Partial evidence
- Its own public description names part of first web marketing agencies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name first web 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 72 first web marketing agencies based in Belfast, United Kingdom
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First web marketing agencies based in Belfast, United Kingdom at a glance
As of Sep 24, 2026Companies by employee count
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 72 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 first web 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 “first web 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 first web 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 first web 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, 77 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 24, 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.
First web marketing agencies by metro in the United Kingdom
- First web marketing agencies in London3584
- First web marketing agencies in Manchester455
- First web marketing agencies in Birmingham294
- First web marketing agencies in Leeds225
- First web marketing agencies in Glasgow197
- First web marketing agencies in Bristol151
- First web marketing agencies in Liverpool138
- First web marketing agencies in Nottingham127
- First web marketing agencies in Edinburgh110
- First web marketing agencies in Brighton103
- First web marketing agencies in Sheffield89
- First web marketing agencies in Norwich87
- First web marketing agencies in Bournemouth83
- First web marketing agencies in Leicester83
- First web marketing agencies in Cardiff81
- First web marketing agencies in Belfast72
- First web marketing agencies in Milton Keynes67
- First web marketing agencies in Newcastle Upon Tyne67
- First web marketing agencies in Reading62
- First web marketing agencies in Southampton62
- First web marketing agencies in Exeter60
- First web marketing agencies in Northampton58
- First web marketing agencies in Cambridge54
- First web marketing agencies in Wolverhampton47
- First web marketing agencies in Peterborough44
- First web marketing agencies in Colchester43
- First web marketing agencies in Poole43
- First web marketing agencies in Derby42
- First web marketing agencies in Cheltenham41
- First web marketing agencies in Doncaster40
- First web marketing agencies in Preston40
- First web marketing agencies in York39
- First web marketing agencies in Bradford37
- First web marketing agencies in Hull37
- First web marketing agencies in Plymouth37
- First web marketing agencies in Warrington37
- First web marketing agencies in Chester35
- First web marketing agencies in Oxford34
- First web marketing agencies in Chelmsford33
- First web marketing agencies in Harrogate31
- First web marketing agencies in Coventry30
- First web marketing agencies in Gloucester29
- First web marketing agencies in Watford29
- First web marketing agencies in Aberdeen28
- First web marketing agencies in Lincoln28
- First web marketing agencies in Portsmouth28
- First web marketing agencies in Hove27
- First web marketing agencies in Huddersfield27
- First web marketing agencies in Ipswich27
- First web marketing agencies in Middlesbrough27
- First web marketing agencies in Swansea27
- First web marketing agencies in Worcester27
- First web marketing agencies in Basingstoke25
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 first web 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 first web marketing agencies are there based in Belfast, United Kingdom?
RevenueBase identified 72 first web 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 has the most first web marketing agencies?
London leads with 3584 headquartered companies, followed by Manchester (455) and Birmingham (294).
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 77 verified decision-maker contacts tracked across these 72 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 24, 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.
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