Discover the top SEO agencies in United Kingdom. Compare services, reviews, and find the perfect agency for your business.
Cambridge, United Kingdom
Based in Cambridge, England, G5 Media works with organizations seeking to apply artificial intelligence to search performance and digital marketing.…
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London, United Kingdom
Based in London, GA Agency positions itself as an independent, global digital marketing agency working across an international footprint described as…
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London, United Kingdom
Based on Paul Street in London's EC2A postcode, this small agency focuses specifically on Google Analytics and GA4 consultancy alongside broader SEO…
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Newcastle upon Tyne, United Kingdom
Operating as a solo practitioner rather than a full agency, Gareth James works remotely from the UK and Thailand under the name SEO Doctor, offering…
View ProfileReading, United Kingdom
Gasp! is a strategy-first marketing and communications agency based in Reading, Berkshire. Known for its creative and effective marketing solutions,…
View ProfileLondon, United Kingdom
Gatelloo Marketing is a top-rated digital marketing agency with over two decades of international experience. Based in London, UK, and Peshawar, Paki…
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Hull, United Kingdom
Operating under the name Search Authority, this small SEO agency is based in Hull, England, with an additional office in London, and has been active…
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Cardiff, United Kingdom
Based in Cardiff, Wales, Gaze Technologies has operated since 2009 as a small IT and digital services provider, with a team of 1-10 people serving bu…
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United Kingdom
Based in Billing Garden Village, Northampton, GBP Manager works with local and multi-location businesses across the UK, including tradespeople, clini…
View ProfileUK, United Kingdom
GC Media is a UK-based digital marketing agency specialized in delivering comprehensive online solutions that empower businesses to thrive in the dig…
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Coleshill, United Kingdom
GDA is a communications consultancy specializing in brand and proposition development. They focus on optimizing the customer journey through strategi…
View ProfileUK, United Kingdom
GDA Ltd is a UK-based digital marketing agency specialized in delivering comprehensive online solutions that drive measurable results for businesses…
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Edinburgh, United Kingdom
Based in Edinburgh's New Town, on Hill Street, Gecko Agency has spent close to 20 years building websites and custom digital projects for its clients…
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Southampton, United Kingdom
A small e-commerce consultancy based in Southampton, Geek Unique works with businesses ranging from start-ups to international multi-site brands, ope…
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Guildford, United Kingdom
Based in Guildford, Geeky Tech is a small digital marketing agency working with B2B technology companies looking to improve visibility in both tradit…
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Belfast, United Kingdom
Working with small and medium-sized businesses in and around Belfast, Gekkoshot has offered search engine optimisation services since 2008, alongside…
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South Marston Park, United Kingdom
Based in South Marston Park, Swindon, Wiltshire, GEL Studios is a small creative agency operating as a B Corp, working with clients from its base in…
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Letchworth Garden City, United Kingdom
Based in Letchworth Garden City, Gene Digital works with small and medium businesses across the UK and beyond, focusing on paid advertising and app s…
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UK, United Kingdom
Generator is a UK-based digital marketing agency specialized in delivering innovative and results-driven solutions for businesses seeking to enhance…
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Guildford, United Kingdom
Based in Guildford, England, Generator Creative Consultants is a small team of ten or fewer working across branding, digital and print for organisati…
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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.
