Discover the top SEO agencies in United Kingdom. Compare services, reviews, and find the perfect agency for your business.
London, United Kingdom
From its base in London, Redegal works as a digital marketing and development consultancy serving a client base that ranges from SMEs to major corpor…
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Redfish Group specializes in digital marketing solutions for the automotive sector, focusing on loyalty apps and eCommerce transformations. Their exp…
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Wiltshire, United Kingdom
Based in Wiltshire and led by founder Sara Tye, redheadPR is a small public relations and marketing consultancy working with individuals, businesses…
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United Kingdom
Redline Public Relations specializes in PR, content marketing, and social media services tailored for the science, technology, and engineering sector…
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Shoreditch, United Kingdom
Founded in 2009 and based in Shoreditch, London, this small agency (team of 1-10) works with international consumer brands on marketing campaigns bui…
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Wath upon Dearne, United Kingdom
Based in Wath upon Dearne near Rotherham, South Yorkshire, REDSKY is a small team offering graphic design and website design services to businesses a…
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West Wellow, United Kingdom
Based in West Wellow, England, Redwood Advertising Ltd operates as a small media planning and buying consultancy, run by a team of one to ten people…
View ProfileManchester, United Kingdom
Based in Manchester, this independent integrated marketing agency works across sectors including retail, drinks, beauty, home and lighting products,…
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Maidstone, United Kingdom
Based in Maidstone with a presence covering London and Kent, Reflect Digital works with businesses across sectors including travel and tourism, prope…
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Belfast, United Kingdom
Based at Ormeau Business Park on Cromac Avenue in Belfast, Reflex Studios is a small digital creative agency working with businesses across Northern…
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Reform Creative is a digital agency specializing in innovative design and marketing solutions. They focus on creating impactful brand experiences for…
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Refresh PR is a UK-based digital marketing agency specializing in innovative public relations strategies and brand management. With a vision to redef…
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London, United Kingdom
Based at Jockey's Fields in London, Regal Roye Limited describes itself as a film and television production company that grew out of a background in…
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United Kingdom
Based in Peterborough and operating across the UK, Regent Branding positions itself as a digital consultancy rather than a conventional agency, worki…
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London, United Kingdom
Based in London, Regroup Media is a digital marketing agency with additional specialist teams in Germany and China, working with businesses seeking t…
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Belfast, United Kingdom
Based in Belfast, Northern Ireland, Reid & Partners Legal Marketing works exclusively with solicitors and law firms across the UK and Ireland. The ag…
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United Kingdom
Reid Creative specializes in graphic design and branding solutions, delivering effective campaigns across traditional and digital media. They focus o…
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London, United Kingdom
Relevance operates as a full-service digital marketing agency based in London, with additional presence in Monaco, France, Miami and Canada, allowing…
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Renew Design is a UK-based digital marketing agency specialized in delivering innovative web design and development solutions. With a mission to empo…
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Long Eaton, United Kingdom
Based in Long Eaton, near Nottingham, Repeat Digital is a small agency working across paid search, paid social and SEO. Its client base spans several…
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The complete migration playbook: what to freeze before launch, how to build a redirect map that actually holds, what to test on the staging site, and how to read the first eight weeks after go-live.
2026-08-02 · 12 min read
How B2B search really works: bottom-of-funnel pages before blog volume, comparison and alternatives content, product-led assets, and attribution that survives a six-month cycle.
2026-08-02 · 11 min read
When template-generated pages work, when they get ignored, and how to build a programmatic set that survives quality updates: real data, real demand, real internal linking.
2026-08-02 · 11 min read
This directory lists 3,907 agencies in United Kingdom, spread across 918 cities. 3,443 of them publish a direct contact (email or phone). The best-represented cities are London (722), UK (191), Manchester (123).
| Team size | United Kingdom | What it means |
|---|---|---|
| 1-10 | 2,948 (75%) | One contact, often the founder. Responsive, limited capacity. |
| 11-50 | 429 (11%) | Specialists per discipline. The most common trade-off. |
| 51-200 | 10 (0%) | Several teams, formal process, higher budgets. |
| 200+ | 22 (1%) | International structure, enterprise accounts. |
Across the 3,907 agencies in this country: SEO (94%), Web Design (65%), SEA/PPC (50%), Social Media (47%), Content Marketing (44%), Web Development (38%). SEO leads with 3,655 agencies.
Stated engagement floors in United Kingdom range from $1,000+ to $100,000+. The most common is $1,000+ (953 agencies). That figure is an entry floor, not a price: it says what size of engagement the agency will take on, which stays the fastest filter for ruling out the ones that do not match your scale.
The 3,907 agencies on this page are ordered by how complete their listing is, not by payment: nobody buys a position here. The information comes from each agency's own website, checked as live. An agency can claim its listing to correct or complete it.
Should you pick an agency based in United Kingdom? Proximity matters most for local SEO and the language your content is written in. Here, English and Spanish are the most declared working languages. For an international site, where the agency sits matters less than its experience in your market.
Small or large agency? 75% of agencies here have fewer than ten people, against 32 above fifty. A small team means direct access to the people doing the work; a large one absorbs heavier programmes without depending on one person.
What to check before signing? Ask for measured results on a site comparable to yours, who actually does the work, and what happens when the contract ends: deliverables and access must stay yours. An agency that will not show its method is selling a black box.
