Find the best SEO agencies in London. Compare top-rated SEO companies and choose the right partner for your business.
London, United Kingdom
Based on Oxford Street in Mayfair, London, this agency works with B2B, SaaS, healthcare, legal, fintech, AI and ecommerce businesses on organic searc…
View Profile
London, United Kingdom
Based in London and serving clients worldwide, SysComm International is a boutique digital automation agency founded by marketing strategists, health…
View ProfileLondon, United Kingdom
søster is an experience management company based in London, specializing in designing and delivering global events that embody brand values. They cre…
View ProfileLondon, United Kingdom
Operating from Paul Street in Shoreditch, London, TAILCO is a small digital agency with a team of between one and ten people. It positions itself as…
View Profile
London, United Kingdom
Based in London, TangerineSEO works with a broad range of business types and sizes, from start-ups to established brands, offering SEO support across…
View Profile
London, United Kingdom
A remote team based in London operates a lead generation and sales development service aimed at B2B and B2C companies looking to build a sales pipeli…
View Profile
London, United Kingdom
Based in London, Techtadd is a digital marketing agency with a team of 11-50 people, working with businesses looking to build their online presence,…
View Profile
London, United Kingdom
Based in Covent Garden, central London, Teksyte is a digital marketing agency trading since 2012 under Companies House registration. It works with UK…
View Profile
London, United Kingdom
A small team based in London, Teqnoor works as a digital marketing and IT solutions provider with a stated focus on B2B brands, positioning its offer…
View Profile
London, United Kingdom
Based in London, this agency operates as a HubSpot partner supporting organisations across a range of sectors, including real estate and educational…
View Profile
London, United Kingdom
The Cabinet operates from London, with a presence extending to New York, working specifically within the beverage industry. Its client roster spans s…
View ProfileLondon, United Kingdom
Based in London, this agency focuses exclusively on the iGaming sector, working with operators and brands across casino, bingo, crypto and sports bet…
View Profile
London, United Kingdom
The City SEO is a small agency based in London that positions itself as an affordable SEO provider for small businesses. It operates on a monthly-fee…
View Profile
London, United Kingdom
A small agency team based in London supports brands across the UK, Australia, USA and UAE, with a particular focus on Amazon sellers alongside broade…
View Profile
London, United Kingdom
The Dgit Solutions is based in London and works with small businesses and enterprises across sectors including business and eCommerce, education and…
View Profile
London, United Kingdom
The Digital Hacks is a small digital marketing team based in London, working with a team size of one to ten people. The agency lists coverage across…
View Profile
London, United Kingdom
The Finishing Post is a London-based digital marketing agency specialized in delivering comprehensive solutions that drive measurable results for bus…
View Profile
London, United Kingdom
A digital marketing agency based in London, The Good Marketer works with small and medium-sized enterprises across the UK, describing its client base…
View ProfileLondon, United Kingdom
The Keyboard Group is a leading brand experience supplier specializing in sustainable print and display solutions for the marketing and advertising i…
View Profile
London, United Kingdom
Based in London at Kemp House, City Road, this agency focuses on lead generation rather than broader marketing, serving businesses across London, Man…
View Profile
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
