Find the best SEO agencies in London. Compare top-rated SEO companies and choose the right partner for your business.
London, United Kingdom
Operating from London with an additional base in Cape Town, Firedog is a branding and creative design agency working with a small team on brand ident…
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London, United Kingdom
A close-knit digital consultancy based in London, Firefly Digital works with a small team spanning strategy, design and engineering. The company desc…
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London, United Kingdom
Operating from London, First Place SEO works with SME clients across the UK, taking on a single business per niche within each geographic area rather…
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London, United Kingdom
Based in London, FirstRank works with individuals, executives, professional firms and brands dealing with damaging online content and search exposure…
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London, United Kingdom
Based in London, England, Firsttouch NG presents itself through its website as a digital studio serving Lagos, Nigeria, describing work with Nigerian…
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London, United Kingdom
Fit Design is a small London-based studio serving UK founders and B2B teams, ranging from Series A startups to SMEs and established firms, with rough…
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London, United Kingdom
Based in London, FK3 describes itself as an integrated growth agency working with local and global brands across multiple markets, including clients…
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Based in London, Flycast Media works specifically with businesses in the financial sector, including asset managers, hedge funds, fintech companies,…
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London, United Kingdom
FMUK Group is a London-based digital marketing agency specialized in delivering comprehensive solutions that drive measurable results for businesses…
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London, United Kingdom
Based in London, this digital marketing agency works with a team of 11 to 50 people and positions its offering around what it terms "Everysearch," an…
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London, United Kingdom
Four Agency is a London-based digital marketing agency specialized in delivering impactful media, creative, and communications campaigns across vario…
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London, United Kingdom
Based in London, Fox Agency works as an integrated marketing and PR agency focused exclusively on global B2B technology brands. Its client base spans…
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London, United Kingdom
Based in London, this small consultancy works with B2B technology organisations seeking to accelerate business growth through digital marketing and p…
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London, United Kingdom
Based in Branch Place, London, Friend Studio works with corporate clients such as private equity firms, listed companies and large multinationals on…
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London, United Kingdom
Since 1993, Full Comms has operated from studios in London, with a hybrid working team based across the country. The agency works with brands in resi…
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London, United Kingdom
Operating from London with additional offices in Amsterdam, Berlin and Lisbon, Fusion Media Services Ltd works as a marketing, PR and public affairs…
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London, United Kingdom
Futur Edge Marketing is a small agency based in London working with small to mid-size businesses that need help building a brand presence online. Giv…
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London, United Kingdom
A small business growth agency based in London, FUTURA | Business Growth Partners works with clients across sectors including restaurants, food and d…
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London, United Kingdom
Based in London, FZHP Global Vision presents itself as a digital agency working with businesses across the USA, despite its UK registration, and oper…
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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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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
