Discover the top SEO agencies in United Kingdom. Compare services, reviews, and find the perfect agency for your business.
London, United Kingdom
Based in London, this agency focuses on B2B digital marketing, working with organisations across sectors including B2B SaaS, clean energy, education,…
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London, United Kingdom
Based at Old Street in London, Hallway Studios works with direct-to-consumer brands building and running online stores on Shopify and Shopify Plus. C…
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London, United Kingdom
Hamedson Design Studio is a London-based digital marketing agency specialized in delivering innovative design solutions and comprehensive digital mar…
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Hamlindaniels is a UK-based digital marketing agency specialized in delivering tailored marketing solutions that resonate with the unique needs of ea…
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Hathersage, United Kingdom
Based in Hathersage, in the Peak District area of England, with a further presence at Brown Street in Sheffield, Hammer Design is a small graphic des…
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Lincoln, United Kingdom
Based in Lincoln, England, Hanabi is a small agency (1-10 people) working with D2C and subscription-first ecommerce brands, particularly those in the…
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Dalston, United Kingdom
Based in Dalston, this one-person operation designs websites for small businesses across the UK and Europe, with a particular focus on the holiday re…
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Stoke Gifford, United Kingdom
HandL Agency operates from Stoke Gifford, near Bristol, and works with local businesses across the area. The team is small, with named members includ…
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UK, United Kingdom
Handpicked Media is a UK-based digital marketing agency specializing in providing comprehensive solutions for businesses looking to enhance their onl…
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United Kingdom
Based in Harlow, Essex, Hands Digital has operated since 2013, serving more than 350 businesses across sectors including care and social services, so…
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United Kingdom
Operating as a freelance frontend developer based in the United Kingdom, Hannah King works with brands and agencies across sectors including film and…
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London, United Kingdom
Hanson Brown is a London-based digital marketing agency specialized in delivering comprehensive and innovative marketing solutions tailored to the un…
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Happen Digital is a UK-based digital marketing agency that specialized in delivering innovative solutions tailored to the unique needs of its clients…
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Stourbridge, United Kingdom
Registered in Stourbridge, England, with a further office in Birmingham, Happy Giraffe works with schools, public sector bodies, and other organisati…
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London, United Kingdom
Based in Hackney, London, Harmonypark is a small digital studio (team of 1-10) that works with creative companies, agencies and brands to build the t…
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Bradford, United Kingdom
Run by Richard Barker, Harrison Mann is a small web design and digital marketing studio based in Bradford, with Barker himself based in Greater Manch…
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Leeds, United Kingdom
Based in Leeds, Harton Works is a small AI search and SEO agency founded in 2025 by Martin Jeffrey, a search strategist with a background working wit…
London, United Kingdom
Based at 75 Newman Street in central London, Harvest Digital is an independent media agency founded in 2001, structured as an employee-owned business…
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London, United Kingdom
A small team based in Ilford, London, Hastech Solutions works with businesses seeking web development, digital marketing and mobile app support, rang…
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Leeds, United Kingdom
Hatch is a Leeds and London-based digital marketing agency specializing in public relations, social media, content production, and event activation.…
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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.
