Find the best SEO agencies in London. Compare top-rated SEO companies and choose the right partner for your business.
London, United Kingdom
WeLoveDigital is a London-based digital marketing agency specialized in delivering innovative and results-driven solutions for businesses looking to…
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London, United Kingdom
Based in Soho at 57 Poland Street, Westside London Limited was founded in 1995 and works as a small team of designers, creatives, producers and devel…
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What Next 4 is a forward-thinking digital marketing agency based in the vibrant city of London, specializing in delivering innovative solutions tailo…
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London, United Kingdom
Operating from London since 2011, Whitehat Digital Marketing works with B2B companies seeking visibility in both traditional search and AI-driven sea…
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London, United Kingdom
Based in London, Whole Hearted Brands is a small brand consultancy with a team of between one and ten people. It works with organisations across sect…
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London, United Kingdom
WHR Marketing LTD is based in London and works with small businesses seeking digital marketing support on a limited team of up to ten people. The age…
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London, United Kingdom
Why Matters is a small e-commerce agency listed as based in London, though its office address is given in Hove, Brighton. The team, made up of fewer…
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London, United Kingdom
Wiserank is a London-based SEO agency working with UK businesses across sectors including eCommerce, local service businesses, and B2B/SaaS enterpris…
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London, United Kingdom
Based in London, this agency works primarily with WordPress and WooCommerce site owners looking to combine web development with AI-driven automation.…
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London, United Kingdom
From an East London office, Wizards of Web has served businesses across Greater London, the Home Counties and the wider UK since 2015. The small team…
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London, United Kingdom
Based in London, Works Digital operates as a small team providing white label digital and creative services to both direct clients and other agencies…
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London, United Kingdom
A small team based in London, WVQ Media works as a full-service web development and digital marketing agency for businesses looking to establish or g…
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London, United Kingdom
Based in London, Xcite Digital works with clients across finance, retail lending and B2B sectors who are looking to increase traffic, sales or leads.…
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London, United Kingdom
From a studio at Osborn Street in East London, Y Wilson works as a small design team serving brands in fashion, luxury goods, art, beauty and culture…
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London, United Kingdom
Founded by Yas, an SEO consultant based in London, Yaser UK is a small digital agency working directly with clients on a 1-2-1 basis rather than thro…
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London, United Kingdom
Based in London, this small digital marketing agency works with organisations across sectors including education, market research and professional se…
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London, United Kingdom
Based at Borough Yards in London, Yellowball is a small agency, with a team of 1-10 people, working with businesses seeking web development, design a…
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London, United Kingdom
London-based YellowInk Digital works with small and medium-sized businesses across a wide range of sectors, including automotive, crypto, education,…
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London, United Kingdom
YesMore Agency is based in London and works exclusively within hospitality, food and drink, covering sectors such as wine, spirits, beer, cider, pubs…
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London, United Kingdom
International brands seeking to enter or expand within the Chinese market are the focus of this London-based agency, founded in 2008 and operating wi…
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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
726 agencies are listed in London, 19% of the 3,907 recorded in United Kingdom — the country's largest city by agency count. 659 publish a direct contact.
In London: SEO (97%), SEA/PPC (54%), Social Media (51%), Web Design (50%), Content Marketing (48%). An agency that ticks every box is rarely good at all of them: look at what it puts first.
Proximity genuinely matters in two cases: local SEO — Google Business profile, reviews, "near me" queries — and needing to meet in person. For an e-commerce or SaaS site targeting the whole country, an agency in London holds no structural advantage over one elsewhere in United Kingdom. The useful criterion stays experience with your type of site.
| Team size | London | Typically |
|---|---|---|
| 1-10 | 526 (72%) | Solo consultant or small studio. Direct access, limited capacity. |
| 11-50 | 108 (15%) | Separate roles: technical, content, link building. |
| 51-200 | 3 (0%) | Structured accounts, process, formal reporting. |
| 200+ | 8 (1%) | International group, enterprise accounts. |
The 726 agencies on this page are ordered by how complete their listing is, never by payment: no position is for sale here. The information is collected from each agency's own website, checked as live. An agency can claim its listing to correct it, complete it, or connect its Search Console data.
What does SEO cost in London? Stated engagement floors here start at $1,000+. That figure says what size of engagement the agency takes on, not what yours will cost: the quote depends on the state of the site, the competition and the volume of content to produce.
Small local agency or large firm? 72% of agencies in London have fewer than ten people. At that size you talk directly to whoever does the work — the main advantage, and the main limit the day the engagement grows.
How do you check an agency before signing? Ask for a measured case on a site comparable to yours, with before and after figures. Check who will actually do the work. And get it in writing what stays yours when the contract ends: content, access, accounts.
All agencies in United Kingdom · Agencies by country · SEO guides
