Discover the top SEO agencies in United Kingdom. Compare services, reviews, and find the perfect agency for your business.
Lincoln, United Kingdom
Founded in 1995 and based in Lincoln, Optima Graphic Design is a multi-disciplinary studio combining brand strategy, graphic design, web development…
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Edinburgh, United Kingdom
Based at 5 South Charlotte Street in Edinburgh, Optimal8 is a small web development and internet marketing team that has worked with tradespeople and…
View ProfileLondon, United Kingdom
Optimia is a London-based digital marketing agency specialized in delivering comprehensive solutions that drive measurable results for businesses acr…
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Isleworth, United Kingdom
Based in Isleworth, England, Optimiserz is a small team (1-10 people) working primarily with startups and entrepreneurs looking to launch or validate…
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Exeter, United Kingdom
Based in Alphin Brook House in Exeter, Devon, Optix Solutions Ltd is a small team of 1-10 people that has operated since 1999. The agency works acros…
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Newquay, United Kingdom
Based in Newquay, Cornwall, with an additional office in Los Angeles, Oracle Design is a small studio of designers and developers founded in 2008 by…
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Colchester, United Kingdom
Based in Colchester, Essex, Orange PR and Marketing is a small team of up to ten people offering public relations and marketing services to businesse…
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Highgate, United Kingdom
Based in Highgate, Orbit Itech works with small and medium-sized businesses, with particular focus on the hospitality sector — restaurants, takeaways…
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Orbit Online is a UK-based digital marketing agency specialized in delivering innovative solutions that drive measurable results for businesses of al…
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Bournemouth, United Kingdom
Based in Bournemouth, Orbital is a small creative agency serving businesses across various sectors, with client work extending internationally rather…
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Dounby, United Kingdom
Based in Dounby, Orkney, Orcadia Design works with businesses and organisations across the UK and Europe, with client work concentrated in renewables…
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Orchestra is a UK-based digital marketing agency specializing in providing comprehensive online solutions tailored to meet the unique needs of busine…
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Orchestra Creative Limited is a UK-based agency specializing in creative solutions. They are currently updating their website to enhance their online…
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London, United Kingdom
Based in London at Old Gloucester Street, Orchid Box works with B2B companies ranging from startups to global enterprises, describing itself as havin…
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Based in London, at Paul Street in the EC2A postcode, this small agency (team of 1-10) works across media, digital and creative disciplines for brand…
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Poynton, United Kingdom
Orebix Digital operates out of Poynton, England, with a further contact line in Stockport, and also takes calls from the US and Canada. The team, siz…
View ProfileLondon, United Kingdom
Organic Digital is a London-based digital marketing agency specialized in delivering comprehensive SEO solutions tailored to the unique needs of busi…
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London, United Kingdom
Based in London, this agency works with organisations across retail, SaaS and other sectors, ranging from high-growth D2C brands to established compa…
View ProfileLondon, United Kingdom
Origin is a London-based digital marketing agency specialized in delivering innovative and data-driven marketing solutions. With a vision to empower…
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Watford, United Kingdom
Based in Watford, Hertfordshire, Origin 1 is a small digital marketing and design studio with more than 20 years of operating history and a design an…
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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.
