Find the best SEO agencies in London. Compare top-rated SEO companies and choose the right partner for your business.
London, United Kingdom
Founded by Mihai, MTS Media is a small digital marketing agency based in London, working with small, medium and large companies across the UK, includ…
View Profile
London, United Kingdom
Based in Sutherland Road, London, Mudimedia Ltd is a small agency, with a team of between one and ten people, working from its E17 office in the nort…
View ProfileLondon, United Kingdom
My Social Agency operates from offices in London and Leeds, working with businesses across a range of industries rather than one specific sector. The…
View Profile
London, United Kingdom
Napta Studio, founded in London in 2022 and registered in 2025, is a small design studio led by its founder, who works directly with clients througho…
View Profile
London, United Kingdom
Based in London, Nautilus Marketing is a small digital marketing agency working with businesses ranging from start-ups to larger international compan…
View Profile
London, United Kingdom
Based in London, this agency positions itself as a specialist YouTube marketing operation working with global consumer brands rather than offering br…
View ProfileLondon, United Kingdom
Operating from London with a technical team based in Tunisia, Navitrends serves organisations across the United Kingdom, Europe, North Africa and the…
View Profile
London, United Kingdom
Neadoo Digital Ltd is registered at Wenlock Road in London, with a trading address in Mitcham Road and a technical office in Poznań, Poland. The Lond…
View Profile
London, United Kingdom
Neptune Digital operates from London, with an additional office in Manchester, and works as a FileMaker consultancy and official Claris Partner. Foun…
View Profile
London, United Kingdom
Nerdster Design is a small UK studio based in Egham, Surrey, near Heathrow, serving clients across London and the wider UK. Its client list spans sec…
View Profile
London, United Kingdom
New Brand Media Ltd is a small agency based in London, England, working with founders, brand owners and product teams that need both visual identity…
View ProfileLondon, United Kingdom
Nexa Digital Studio, based in London, focuses exclusively on marketing for the finance sector, working with fintech companies, CFD brokers, prop trad…
View Profile
London, United Kingdom
Nexa Growth operates from the UK as a senior-led digital marketing consultancy, working with SaaS companies, B2B businesses, service brands, local se…
View Profile
London, United Kingdom
Nexus Healthcare is based in London and works with private clinics, cosmetic practices and other medical professionals across the UK. The agency posi…
View Profile
London, United Kingdom
Nimbus Hosting is a UK-based digital marketing agency specialized in providing comprehensive web hosting solutions tailored to meet the diverse needs…
View Profile
London, United Kingdom
Based in London (with additional UK offices in Watford and Leicester), No Name Digital is a small digital marketing agency working with brands across…
View Profile
London, United Kingdom
Based at The Shard on London Bridge Street, No Pork Pies has operated as a digital marketing agency since 2009. The company works from a small team o…
View Profile
London, United Kingdom
Operating out of London, non.agency works with e-commerce brands looking to expand into new markets and increase organic-driven sales rather than jus…
View Profile
London, United Kingdom
Noran Design is a small strategic design and digital growth studio based in Essex, operating from London within the UK and working with organisations…
View Profile
London, United Kingdom
Northberry is a small web design studio based in Wimbledon, London, founded in 2022. It works with small businesses, local shops, freelancers and sol…
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
