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 Essex, Qivo Marketing (also referred to as qivo) works with small and growing businesses across Essex, London and the wider UK, with a parti…
View Profile
London, United Kingdom
A London-based agency, QualiConvert works exclusively with dental practices across the UK, positioning itself as a specialist rather than a generalis…
View Profile
London, United Kingdom
Operating from London, this agency works with small to medium-sized businesses, with stated specialisms in the legal, financial and service sectors.…
View Profile
London, United Kingdom
A small studio based in London, Quick Innovations designs and builds websites for startups and small to medium-sized businesses, with a stated focus…
View Profile
London, United Kingdom
Based in Greenland Street, Camden, this agency also maintains offices in Shanghai and Dubai, positioning itself as a global creative and communicatio…
View Profile
London, United Kingdom
Rank Me Higher works with businesses in the United States, United Kingdom and Australia, positioning itself around the shift in how people research a…
View Profile
London, United Kingdom
Rank Strikers is based in London, with additional focus on the Kent area, and works as a small consultancy (team of 1-10) supporting startups, SMEs a…
View Profile
London, United Kingdom
Based at Tallis House on Tallis Street in Greater London, with an additional UK office in Leonard Street, Ranking Road positions itself as a partner…
View Profile
London, United Kingdom
Based in London, Rankraze works with startups and growing businesses looking to combine web development, marketing and software into a single connect…
View Profile
London, United Kingdom
Operating from London, this small consultancy positions itself within health-tech, offering independent clinical insight to companies developing arti…
View Profile
London, United Kingdom
Founded in 2010 by Adam MacHardie and Lisa Greenhouse, this boutique agency operates from Covent Garden in central London and works with businesses a…
View Profile
London, United Kingdom
Based at Aviation House on Kingsway in London, Rapier works with CxOs, CRM, Martech and Data & Analytics teams looking to make better use of first-pa…
View Profile
London, United Kingdom
Based in London and founded in 2005, RBSEO is a small team focused primarily on link building and related SEO services, working with businesses acros…
View Profile
London, United Kingdom
A London-headquartered agency with an additional base in Manchester and a presence in West Hollywood, California, Re:signal works with ecommerce bran…
View ProfileLondon, United Kingdom
Real PR is a London-based digital marketing agency specialized in public relations and integrated marketing strategies. With a mission to elevate bra…
View Profile
London, United Kingdom
Founded in 2012 and based in London, Reboot Online is a search and digital marketing agency with a team of 11-50 people. Its client roster spans sect…
View Profile
London, United Kingdom
Based in Waterloo, London, with meeting space available at North Greenwich's Design District, Red Balloon Web is a small team led by Chris Dann, a we…
View Profile
London, United Kingdom
Based in Clerkenwell, East London, Red Stone is a small independent creative agency with a team of one to ten people. It works primarily with chariti…
View Profile
London, United Kingdom
From its base in London, Redegal works as a digital marketing and development consultancy serving a client base that ranges from SMEs to major corpor…
View Profile
London, United Kingdom
Based at Jockey's Fields in London, Regal Roye Limited describes itself as a film and television production company that grew out of a background in…
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
