Find the best SEO agencies in London. Compare top-rated SEO companies and choose the right partner for your business.
London, United Kingdom
Based in London, this small studio positions itself as a metaverse IP and innovation lab rather than a conventional marketing agency, working at the…
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London, United Kingdom
Operating from London under the name Search Informer, DBD Media is a small search marketing agency working with businesses seeking growth through org…
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London, United Kingdom
A small team based in London works with businesses across sectors including health platforms, e-commerce, veterinary services, and SaaS products, des…
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London, United Kingdom
Based in London, this creative design agency works with brands across luxury, heritage, hospitality, B2B, placemaking and startup sectors. Its client…
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London, United Kingdom
Based in London, this specialist agency focuses exclusively on dental clinics across the UK, helping them appear in AI-driven search tools such as Ch…
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London, United Kingdom
Design By Ego is a London-based digital marketing agency specialized in creating impactful online experiences that resonate with brands and their aud…
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London, United Kingdom
Operating from offices in London and Leeds, Design Portfolio works with corporates and listed companies on communications aimed at investors, employe…
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Desire Group International is a dynamic provider of professional services focused on driving revenue growth through innovative sales solutions. We sp…
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London, United Kingdom
Based in London, DevifyHub operates as a white-label web development partner for agencies, designers and studios rather than working directly with th…
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London, United Kingdom
Diffusion PR is based at Brownlow House in High Holborn, London, with additional offices in New York and Los Angeles, and access to an international…
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Digiditta is a small digital marketing outfit based in London, England, working with small businesses and startups that need help establishing an onl…
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London, United Kingdom
Digileads is a small digital marketing team based in London, operating with a staff of between one and ten people. The agency works with businesses l…
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London, United Kingdom
Digital Boutique is a leading agency specializing in ecommerce strategy, design, and development. With a focus on creating innovative digital experie…
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London, United Kingdom
Based in London and working with clients internationally, Digital Glory is a small team offering search engine optimisation, online reputation manage…
View ProfileLondon, United Kingdom
Digital Marketing Agency UK is a London-based digital marketing agency specialized in delivering comprehensive online marketing solutions tailored to…
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London, United Kingdom
Based in London and operating under the registered name Netzen Solutions Ltd, Digital PR is a small team of digital marketers, sized between one and…
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London, United Kingdom
Based in London, this small agency operates with a team of ten or fewer, working across local and national SEO alongside conversion optimisation, eco…
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London, United Kingdom
Registered in England since 2010 and based at Wenlock Road in London, Digital Search Group Ltd is a small SEO-focused agency working with a broad ran…
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London, United Kingdom
Based in London, Digital Trails works as a PR, content and SEO partner for e-commerce and service providers looking to expand internationally and bui…
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London, United Kingdom
Based in London, this agency operates as part of a wider international network with additional offices across France, Germany, Italy and Spain, and w…
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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
