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Top Advertising Companies in the UK

188 of 497 advertising companies ranked on evidence in the Q4 2026 edition.

We list 23 advertising companies in the UK. The order comes from what each firm publishes and what has been verified about it, never from payment — at the top right now: Hydrant, CRISP and KAT Marketing.

Before you shortlist, check

Campaigns they ran for businesses your size, with results you can verify
How media is bought, and whether they take commission or rebates on it
Who owns the creative, and for how long you can use it
The reporting you will get, and from whose systems

TrustList ranking

Q4 2026 edition

188 of 497 advertising companies ranked on evidence held on 9 October 2026: client reviews, vetting, awards and facts each business states on its own website, which we read and date. Nobody pays to be placed.

Positions are fixed for the quarter; the next edition is due in January 2027.

How this is ranked About this edition

All advertising companies 188 ranked SMEs 187 ranked

The SME ranking on this page lists 473 small and medium-sized agencies, and 101 of them earned a rank number. One business known to be large is left out, and the SME order does not reward age. See the SME ranking

Filter by fitbudget, engagement, size and more

Also listed, not yet ranked. We hold nothing checkable on these yet that ranks them here: no client review, vetting, award, expert review, or fact stated on their own website (and on a place ranking, where they are based). They follow in order of their TrustList Score. How TrustList ranks · Get vetted, free
SharpEnd
Mobile App Development · Web Development · iOS App
SharpEnd is an agency that helps brand owners create connected experiences in the real world. It began in 2014 as a business linking brands and consumers through products.
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On record: Founded 2014 · Team of 15+, as stated on its own website, read 6 Oct 2026
Icarus Communications
Digital Marketing · PPC · Progressive
Icarus Communications is a design and digital marketing agency that trades as Icarus Marketing.
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On record: Founded 2016, as stated on its own website, read 5 Oct 2026
CD
Cheetah distribution - Leaflet Distribution Sheffield
Consumer Products & Services · Arts, Entertainment & Music · Advertising & Marketing
Cheetah Distribution offers a top-tier leaflet distribution service in Sheffield, specialising in targeted door-to-door delivery that boosts brand visibility and enhances customer…
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On record: Address in United Kingdom
Head45 Ltd Digital Marketing Agency Cardiff
Advertising & Marketing · Also in Cardiff
Head45 Ltd. is one of the leading marketing companies in Cardiff that provides cutting-edge solutions to businesses of all sizes and industries.
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On record: Address in United Kingdom
Flipside
Flipside is a creative digital agency working on design and technology projects, from websites to apps and hardware.
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On record: Based in London and Surrey, UK · Team of 90+, as stated on its own website, read 29 Sept 2026
J2
Web Design · UI/UX Design · WordPress
J2 is a creative agency that focuses on marketing for space and place, which in practice means property and the built environment.
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On record: Team of 75+, as stated on its own website, read 6 Oct 2026
Mindshare
Web Design · Web Development · UI/UX Design
Mindshare is a media agency network that works with clients on how their brands appear across media. Its website describes about 10,000 people in 86 countries.
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On record: Team of 10,000+, as stated on its own website, read 6 Oct 2026
Thinking Juice
Social Media Marketing · Search Engine Optimization · Mobile App Development
Thinking Juice is an advertising and marketing agency that handles a brand's work from planning through to production.
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On record: Based in Bournemouth and London · Team of 35+, as stated on its own website, read 5 Oct 2026
Wavemaker
Social Media Marketing · Search Engine Optimization · Web Design
Wavemaker is a media agency set up to reinvent how media agencies work. Its stated mission is to make the future.
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On record: Team of 7,600+, as stated on its own website, read 5 Oct 2026
1D
13 Design
13 Design, registered as 13 Design Ltd, is a branded products company based in Edinburgh.
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On record: Based in Edinburgh, Scotland, United Kingdom
3:nine
Business Services · Information Technology · Financial Services
3:nine is a public relations and communications consultancy that concentrates on three sectors: healthcare, education and the environment.
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On record: Based in United Kingdom
A Thousand Monkeys
Arts, Entertainment & Music · Advertising & Marketing · Business Services
A Thousand Monkeys is a copywriting agency in Bournemouth. It helps organisations with complex ideas or new technology explain themselves clearly, through brand stories, tone of…
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On record: Based in Bournemouth, UK
Accord Marketing
Hospitality & Leisure · Business Services · Financial Services
Accord Marketing is a London marketing agency that specialises in travel, tourism and hospitality.
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On record: Based in London
Agency Inc.
Arts, Entertainment & Music · Business Services · Financial Services
Agency Inc. is a creative agency in London that works on branding and marketing for business-to-business companies.
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On record: Based in London
Aillum
Advertising & Marketing · Business Services · Digital Marketing · Also in Renfrew and Scotland
Aillum helps companies measure and improve their online marketing, working from Paisley with clients across Scotland and the wider UK.
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On record: Based in Paisley, Scotland
AKR SEO Agency
AKR SEO Agency helps businesses in London win more visitors from Google without paying for ads.
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On record: Based in London, UK
Alexandra Patrick
Energy & Natural Resources · Business Services · Information Technology · Also in London
Alexandra Patrick, trading as alexandrapatrick, is a marketing consultancy and coaching practice founded by Maria Callow.
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On record: Based in Ashford, Kent
Anicecommunication
Anicecommunication, trading as Anice, is a communication agency that handles press office, public relations and media relations for companies in mobility and automotive.
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On record: Based in Turin, Paris, Madrid, Amsterdam, Frankfurt, London and Göteborg, with presence…
Aqueduct
Supply Chain, Logistics, and Transport · Consumer Products & Services · Arts, Entertainment & Music
Aqueduct is a digital agency working only in healthcare, and its website now presents the business under the name Flipside Health.
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On record: Based in London
Ardmore Advertising and Marketing
Creative · eCommerce · front · Also in Fleet
Ardmore Advertising and Marketing is an independent creative agency based in Belfast, working across the UK and Ireland.
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On record: Based in Belfast, Northern Ireland
Axonn Media
SEO · Advertising · Video
Axonn Media is a full-service digital marketing agency in London that runs content, video, advertising and web projects under one roof.
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On record: Based in London, United Kingdom
Be Media
Be Media is a digital marketing agency in Morley, on the edge of Leeds.
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On record: Based in Morley, Leeds, UK
Be More Cheetah
Be More Cheetah is a UK marketing agency and consultancy that describes its way of working as agile, pairing strategy with fast delivery.
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On record: Based in Hambleton, Lancashire, England
Beatfreeks
Arts
Beatfreeks is an insight, strategy and engagement agency in Birmingham that helps organisations stay relevant to younger and more diverse audiences.
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On record: Based in Birmingham, United Kingdom

For vendors

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The order is earned on evidence: client reviews, vetting, awards and the facts a business states on its own website, which we read and date. Nobody can pay to move up. Add reviews or verified facts to your free profile to move up at the next edition; there are two ways to stand out now, and each one says what it is.

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How is this ranking worked out?

The order comes from what each firm publishes and what has been verified about it, and never from payment:

Profile completeness: the details a buyer needs to judge a firm — what it does, who it serves, how it prices, who it has worked for
Earned trust: verification, awards and the other checks a firm has actually passed
Client reviews, where they exist: the rating is smoothed, so one five-star review cannot outrank a firm with a hundred good ones, and volume counts with diminishing returns

Client reviews are still rare across this catalogue, so on most lists today the order is set by the first two. A firm near the top is the best-documented and best-verified one we hold, which is not the same claim as the best one to hire. Use the list to build a shortlist, then check the firms yourself.

Sponsored listings are labelled and shown apart from this list. How rankings work

Only firms whose profile names the UK are counted here, so a firm that lists a town but no country is not yet included.

Where else can I look?

The same list elsewhere: India (92) · Canada (41) · Australia (28).

Every category in the UK: the UK country page.

Top B2B companies in the UK38 categories ranked, 2,075 companies

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Every other way we rank advertising companies, by what they do and where they are.

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Everything here links back to the same verified catalogue. Pick your next stop.

Top Advertising Companies in the UK

SharpEnd

Icarus Communications

Cheetah distribution - Leaflet Distribution Sheffield

Head45 Ltd Digital Marketing Agency Cardiff

Flipside

J2

Mindshare

Thinking Juice

Wavemaker

13 Design

3:nine

A Thousand Monkeys

Accord Marketing

Agency Inc.

Aillum

AKR SEO Agency

Alexandra Patrick

Anicecommunication

Aqueduct

Ardmore Advertising and Marketing

Axonn Media

Be Media

Be More Cheetah

Beatfreeks

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