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The only directory that maps which agencies belong to WPP, Publicis, Omnicom, and other holding groups - and which stand alone.
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Agencies that have claimed and verified their listing. Refreshed weekly.

Angelfish Marketing is a specialist B2B SEO and AEO agency helping SaaS, technology and professional services companies get found, trusted and chosen across Google and AI answer engines.

Scoot is a strategic digital marketing agency that prides itself on delivering bespoke solutions, specially designed to align with the unique goals of each of our clients. We offer a full suite of digital solutions designed to drive growth and transformation for your business. We create custom-built solutions that deliver results and drive value for our clients - no matter what that looks like. We

Clifton Web Design, a Bristol-based web design firm in the UK, is renowned for its innovative and tailored approach. Offering customised web design, logo creation, branding, and all-inclusive digital solutions, we serve a diverse range of clients - from startups and businesses to charities and independent traders - both locally and globally. Boasting 18 years of industry experience and over 220 un

There are lots of reasons we keep clients for a long time, our current average is 5 years, mainly they stay because we keep solving tricky marketing problems from them, like increasing sales via their websites and social media...

Active Internet Marketing (UK), a Stamford-based digital marketing agency, distinguishes itself with a broad array of services. These encompass expert SEO, tailored PPC, professional web design, and bespoke social media marketing, all designed to expand and enhance our clients' customer reach. Demonstrating an unwavering dedication to research and development, as signified by a substantial £450K investment in the last 2 years.

With a quarter-century of expertise, pjm:digital is a Bradford-based digital agency specialising in eCommerce. As a renowned digital agency in West Yorkshire, our forte is creating effective eCommerce strategies, crafting engaging web designs, and implementing impactful digital marketing techniques. We're proud to be a certified Shopify Partner, bringing unique solutions tailored to UK businesses
Advisory services for when the directory isn't enough.
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We help brands run better pitches. From writing the brief, to drawing up the shortlist, to evaluating responses against the criteria that actually predict success.
Agency Due Diligence
Independent vetting before you commit. Capability, financial stability, culture, performance. The questions you'd ask if you had time to ask them.
Field notes from across the UK landscape.

Best SEO Agencies in London (2026): 15 Scored and Reviewed
We scored 15 of the best SEO agencies in London for 2026 against six criteria, then mapped them to what you actually need: ecommerce, B2B, technical, enterprise, local or AI search. An independent, transparent ranking.

Top 10 Businesses Headquartered in Reading
Discover the top 10 businesses headquartered in Reading, the Thames Valley town that hosts the UK arms of Microsoft, Oracle, Bayer, PepsiCo and more.

Top 10 Businesses Headquartered in Glasgow
Discover the top 10 businesses headquartered in Glasgow, from FTSE 250 Weir Group to The Macallan owner Edrington. Explore Scotland's largest business hub.
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Free listings for every UK marketing agency. Claim your entry to unlock verified status, edit your profile, and respond to enquiries.
A monthly note on the UK agency landscape.
New entries to the index, notable holding-group moves, and our editor's pick of long-form.