Discover the top SEO agencies in United Kingdom. Compare services, reviews, and find the perfect agency for your business.
Chester, United Kingdom
Based in Chester, this agency works with growing businesses across Liverpool, Manchester and the wider North West, covering sectors that range from l…
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London, United Kingdom
Codematic Technology Services is based in London and works with businesses across Europe, Africa and the United States, with a small team handling cl…
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London, United Kingdom
Based in London, England, with an additional presence serving clients in the United States, Codener is a software development company operating with…
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Norwich, United Kingdom
Based in Norwich, CODER Agency is a small digital marketing team working with businesses that need visibility across search, social and paid channels…
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Brightons, United Kingdom
Based in Brightons, United Kingdom, Codero Ltd works specifically with independent hotels looking to reduce their dependence on online travel agents…
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Grantham, United Kingdom
Based in Grantham, Lincolnshire, Codesky is a small digital agency working with local and small business clients, including operators such as an owne…
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London, United Kingdom
Headquartered on Shelton Street in London, Codezela Technologies works with UK businesses seeking digital transformation and AI-driven systems alongs…
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London, United Kingdom
Based in Stratford, East London, Coding Wallet works with local businesses seeking a digital marketing partner able to combine web development, searc…
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Walsall, United Kingdom
Based in Walsall, Coffee Black is a small team offering SEO, web design and social media services to businesses across the West Midlands, including B…
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Banbury, United Kingdom
Cogent is based in Banbury, England, with references on its site to Leamington Spa, and works with brands across sectors including waste management,…
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Shepton Mallet, United Kingdom
Based in Shepton Mallet, Somerset, Cognique is a small web design and digital marketing agency working with business owners and marketing managers wh…
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London, United Kingdom
Based in London, Cogworks builds enterprise Umbraco platforms for organisations in charities, financial services and professional services. Founded i…
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Brighton, United Kingdom
Based in Brighton, England, Coherence Digital works as a technology consultancy focused on digital transformation, enterprise software and complex we…
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Romford, United Kingdom
Based in Romford, United Kingdom, CoinFunnel is a small agency, registered as CF Advertising Ltd, that focuses on press release distribution for the…
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Basildon, United Kingdom
Based in Basildon, Essex, Cold is a small digital agency working from a physical office in the town while serving clients across the UK, from Southen…
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London, United Kingdom
Based in London, ColdChain Agency works exclusively with crypto, blockchain, fintech and Web3 projects, serving clients ranging from crypto exchanges…
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Colewood is a digital marketing agency with over 26 years of experience, specializing in SEO, PPC, email marketing, and branding. They focus on deliv…
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Edinburgh, United Kingdom
Based in Colinton, on the edge of Edinburgh, this small web design outfit works with small businesses and individuals across the local area who need…
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Freeland, United Kingdom
Based in Freeland, near Witney and Oxford, Colour Rich is a small web design studio that has operated since 2011, serving businesses across the Oxfor…
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York, United Kingdom
Colourscope is a web design and branding agency based in York & Selby, North Yorkshire. With 22 years of experience, they specialize in creating besp…
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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.
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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.
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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.
