An independent map of the UK marketing agency landscape.
841 agencies indexed across service, industry, location and corporate ownership. Built so brand-side marketers can find the right partner without wading through ads, pay-for-play directories, or pitch decks dressed up as comparison sites.
One job. Help marketers find the right agency.
AgencyIndex is a directory of UK marketing agencies. Every agency listed gets the same basic profile: services, industries, location, ownership, headcount, website. The agencies don't pay to be listed - they're here because they meet our editorial bar.
What makes it useful is the cross-indexing. The same agency surfaces on the service axis (SEO, paid social, brand), the industry axis (fintech, FMCG, healthcare), the location axis (London, Manchester, Edinburgh), and the ownership axis (independent, network, holding-group). You can land on whichever axis matters to you and triangulate from there.
Behind the directory we also run a small advisory practice - structured pitch processes and pre-commit agency due diligence - for buyer-side teams who want a hand running a real evaluation rather than just searching.
How agencies get in. How profiles stay accurate.
Editorial review, not pay-to-play
Every listing is reviewed before it goes live. We look at the agency's public work, who they've worked with, whether the team behind it is real, whether the website matches what they say they do. Listings are free - we don't charge agencies for placement.
Verified reps edit their own listings
Each agency listing has a verified rep - the actual person at the agency authorised to keep their entry accurate. Reps edit through a dashboard; every change is reviewed before it goes live. That way the data doesn't go stale and we don't accidentally publish a typo, a misleading claim, or worse.
The Dispatch
A monthly note covering what's changed in the UK agency landscape - new entries to the index, holding-group activity, and the occasional long-form essay on the industry. Browse the journal or sign up at the bottom of any article.
Tom Wilson.
AgencyIndex is run by Tom Wilson, a UK-based marketing consultant with two decades inside agencies and on the brand side. The directory started as a private spreadsheet of agencies Tom kept getting asked to recommend, then grew into an independent reference for the wider marketing community.
Get listed, get advice, or get in touch.
Three places to start. No paywalls, no obligation.