Find the best SEO agencies in London. Compare top-rated SEO companies and choose the right partner for your business.
London, Canada
Based in London, Ontario, Acesoft Inc works with businesses in Canada, the United States, the United Kingdom, the UAE, and Australia, offering round-…
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London, Canada
ATMOS Marketing operates out of London, Ontario, with a second office in Toronto, and functions as a division of Northern Commerce, positioning itsel…
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London, Canada
Ayr Digital is a London, Ontario-based digital marketing agency specialized in delivering AI-powered marketing solutions that drive measurable result…
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London, Canada
Blake Strategies Group is a London, Ontario-based digital marketing agency specialized in providing comprehensive website management, SEO, PPC, and w…
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London, Canada
Bradlex SEO works with businesses in London, Ontario and the surrounding Southwestern Ontario region, including St. Thomas, Strathroy, Woodstock, Ing…
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London, Canada
CanadaWebPro.ca is a London, Ontario-based digital marketing agency specializing in comprehensive website design and development services tailored fo…
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London, Canada
Canadian Development Technology (CDT) is a London, Ontario-based digital marketing agency specialized in web design and comprehensive digital marketi…
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London, Canada
Digital Clicks Marketing operates out of London, Canada, working with businesses that run paid advertising and SEO programs and want their marketing…
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London, Canada
Based in London, Ontario, Foundery Digital Marketing Group works with B2B and B2C businesses across Canada, the United States and internationally. Th…
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London, Canada
Based in London, Canada, Good Ideas Marketing works with small businesses looking for structured, predictable marketing rather than ad hoc campaigns.…
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Based in London, Ontario, this agency works with small to medium-sized businesses looking to strengthen their digital presence without building an in…
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London, Canada
Based in London, Ontario, Hart Direction works with local businesses in the city and the surrounding area. The team is small, sized at ten people or…
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London, Canada
Founded in 2011 and based in London, Ontario, Hello Media Inc. describes itself as a distributed Canadian web design and development group. The agenc…
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IAMSEO Digital is a small digital growth agency based in London, Ontario, working with businesses seeking stronger visibility in organic search and i…
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London, Canada
Based in Ilderton, near London, Ontario, LOWD Media is a home-based agency that works primarily with small businesses seeking a stronger web presence…
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London, Canada
Based in London, Ontario, Markedox Digital is a small team, founded in 2022, that focuses its work on SaaS companies looking to grow through inbound…
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Netline Solutions is a hybrid agency specializing in Managed IT Services and advanced Data Science. They provide custom software development and algo…
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Based in London, Ontario, ONmetrics is a digital marketing consultancy operated by Dave De Vries, serving businesses across London and Southwestern O…
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Operating out of London, Ontario since 2005 under the name Ontario SEO, Foundery works with B2B and B2C businesses across Canada, the United States,…
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London, Canada
Based in London, Canada, SmartWebPros has been building websites and running SEO campaigns since 2002, working with small and mid-sized businesses ac…
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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
27 agencies are listed in London, 2% of the 1,793 recorded in Canada — the country's 12th city by agency count. 26 publish a direct contact.
In London: SEO (96%), Web Design (67%), SEA/PPC (67%), Web Development (52%), Social Media (44%). 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 Canada. The useful criterion stays experience with your type of site.
| Team size | London | Typically |
|---|---|---|
| 1-10 | 22 (81%) | Solo consultant or small studio. Direct access, limited capacity. |
| 11-50 | 5 (19%) | Separate roles: technical, content, link building. |
The 27 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? 81% 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.
