Best SEO Companies in the United Kingdom
Looking for SEO agencies in the UK? This page compares firms from London to the regions so you can shortlist one that fits your budget and market before you commit to a retainer.
Expertise
Industries
Dedicated, screened shortlists for every market, service, and industry.
How to choose an SEO agency in the UK
Agency size is a weak signal on its own. A national firm with hundreds of clients can still assign your account to a junior team, while a smaller regional agency might put a senior strategist on your work from day one. Before signing, ask who will actually run your account week to week, not just who pitches you. It's also worth asking directly whether AI-search visibility work, how your brand shows up in ChatGPT, Gemini or AI Overviews, is part of the retainer or billed as an add-on, since UK agencies increasingly treat this as a separate line item.
What SEO costs in the UK
UK SEO retainers span roughly £500 to £20,000 or more a month depending on scope and agency size. Most small-to-mid businesses land at £1,000-£2,500 a month, while growing or mid-size companies commonly pay £2,500-£5,000. Below about £800 a month, agencies typically can't do much more than templated, low-effort work. Expect London-based agencies to sit toward the higher end, roughly 20-50% above equivalent work from a Manchester, Edinburgh, Cardiff or Belfast agency, though remote delivery has narrowed that gap in recent years.
Agency directory you can trust
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Browse by market or service
Use the galleries to find agencies proven in your market, service, or industry.
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Compare on real proof
Every profile shows verified services, expertise, languages, pricing signals, and screening status.
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Book a call directly
No middleman, no lead forms. Book straight into the agency's calendar.
How agencies earn a listing
Listings aren't paid placements. Every agency passes four checks before appearing, and stays only if it keeps passing them.
Proven search results
We verify real ranking performance in the agency's own market before listing.
Verified services
Services, industries, and languages are checked against the agency's actual work.
AI search expertise
Agencies must demonstrate working GEO/AEO capability, not just claim it.
Ongoing review
Listings are re-reviewed continuously and removed if quality standards slip.
Got questions about the directory? Start here
How much does SEO cost in the UK?
UK SEO retainers typically range from £500 to £20,000 or more a month, depending on scope and agency size. Most small-to-mid businesses pay £1,000-£2,500 a month, while growing or mid-size companies commonly pay £2,500-£5,000. Below around £800 a month, agencies usually can't do much beyond templated, low-effort work.
How long does SEO take to show results in the UK?
Expect initial measurable movement in 3-4 months, with meaningful, stable ranking and traffic gains typically taking 6-12 months. Local or map-pack SEO can show visible movement faster, often within 60-90 days. A brand-new site should expect 12-18 months before SEO reliably contributes to leads or enquiries.
Should I hire a local agency or a national one?
Both work well in the UK market. National or remote agencies can serve any UK region and often price more competitively than London specialists, while a local agency may bring stronger knowledge of your specific city or region's customer base and competitors. London agencies typically charge 20-50% more than equivalents in Manchester, Edinburgh, Cardiff or Belfast for comparable work, though remote delivery has narrowed that gap in recent years, so location alone shouldn't decide your shortlist.
Is SEO being phased out by AI search?
No. Organic listings still generate the large majority of search clicks, and the technical and authority work behind good rankings is exactly what makes a brand citable in AI answers from tools like ChatGPT or Gemini. What's changing is measurement: buyers now also track whether AI engines name their brand when someone asks a buying question. Ask any shortlisted agency how they measure AI-search visibility, not just traditional rankings.
How are the agencies on this page ordered?
Agencies are ordered by partner tier: Certified Partner first, then Partner, then Unverified. Tier reflects an agency's verification status with AIclicks, not a performance score or a ranking of quality. Unverified profiles were compiled from public search results and have not been claimed by the agency yet, so their details are deliberately minimal. Any agency can claim its profile to correct and expand it.
