SEO Agencies in United Kingdom

843 SEO agencies are listed in United Kingdom. 651 have been assessed on the Agency List Score as of October 2026; the highest-ranked is Vantage Agency at 97.9.

Ranked · 561 of 651 assessed

Ordered by Agency List Score
#1 of 651 assessed
Vantage Agency
98

Expert Digital Marketing with Aggressive SEO and Precision PPC

Ads ManagementAnalytics & ReportingContent Marketing
#2 of 651 assessed
Elevate Digital
98

Boosts sales with SEO, PPC, and conversion optimization

Ads ManagementConversion Rate OptimizationLanding Pages
#3 of 651 assessed
STM Agency
98

Combines storytelling and AI for brand growth

Ads ManagementContent MarketingLead Generation
#4 of 651 assessed
Digital Innovation Group
98

Performance marketing and technology with global reach

Ads ManagementAnalytics & ReportingContent Marketing
#5 of 651 assessed
Visionary Marketing
98
Verified

Expert SEO and Google Ads management

Ads ManagementAnalytics & ReportingConversion Rate Optimization
#6 of 651 assessed
Embryo
98

Transforming performance marketing with SEO and digital PR expertise.

Content MarketingSearch Engine OptimizationWebsite Optimization
#7 of 651 assessed
Frost Creative
97

Brand strategy, identity and digital delivery built for B2B industrial and infrastructure companies

Ads ManagementAnalytics & ReportingContent Marketing
#7 of 651 assessed
Profitable Sites
97

Guaranteed ROI with Google Ads and SEO expertise

Lead GenerationSearch Engine OptimizationWebsite Optimization
#9 of 651 assessed
SkyWalk
97

Digital marketing with SEO, social media, and web development

Ads ManagementAnalytics & ReportingContent Marketing
#10 of 651 assessed
Better
97

Strategic branding for ambitious consumer goods and technology brands

Ads ManagementAnalytics & ReportingContent Marketing
#10 of 651 assessed
Digital Media Team
97

Performance marketing with PPC, email, and web development expertise

Email MarketingSearch Engine OptimizationSocial Media Management (SMM)
#12 of 651 assessed
Lime Creative
97

Crafting luxury brand narratives through design and storytelling

Ads ManagementAnalytics & ReportingContent Marketing
#12 of 651 assessed
43 Clicks North
97

Google Ads, Meta, SEO, CRO and analytics from Hull and London

Content MarketingConversion Rate OptimizationLanding Pages
#14 of 651 assessed
Purple Riot
97

Site taken offline, currently unavailable for visitors

Ads ManagementAnalytics & ReportingContent Marketing
#15 of 651 assessed
Hallam
97

B2B marketing with digital strategy and creative campaigns

Content MarketingMarketing AutomationReputation Management
#16 of 651 assessed
MOI Global
97

Integrated creative marketing for B2B technology brands

Ads ManagementAnalytics & ReportingContent Marketing
#16 of 651 assessed
Platypus Digital
97

Charity digital experts in Google Ads and SEO

Search Engine Optimization
#18 of 651 assessed
Emotio Design Group
97

AI-driven branding, web development, and marketing solutions

Ads ManagementAnalytics & ReportingContent Marketing
#19 of 651 assessed
Red C Marketing
97

Connecting brands with customers through email and direct mail marketing

Email MarketingLead GenerationMarketing Automation
#20 of 651 assessed
Staunton Rook
97

Tailored marketing strategies with online and offline integration

Analytics & ReportingEmail MarketingLead Generation
#20 of 651 assessed
Consider
97

SEO and PPC services for inbound lead capture and search visibility

Ads ManagementAnalytics & ReportingContent Marketing
#22 of 651 assessed
Site Reach
97

Driving ROI with SEO, PPC, and Content Marketing

Content MarketingConversion Rate OptimizationLead Generation
#23 of 651 assessed
KD Web
97

Driving measurable growth with SEO, PPC, and web design

Marketing AutomationSearch Engine OptimizationSocial Media Management (SMM)
#23 of 651 assessed
10 Associates
97

Insights and updates delivered through engaging newsletter content

Ads ManagementAnalytics & ReportingContent Marketing

Showing the top 96 of 561 ranked agencies.

Also in United Kingdom · 282 not ranked here

192 have not yet been assessed on the Agency List Score. Alphabetical.
245 more listed here are not shown on this page.

About this ranking

What this page ranks

This page ranks 561 of the 651 assessed SEO agencies in United Kingdom — the ones carrying a published score — out of 843 listed.

The score measures how well an agency documents its own work in public — named clients, quantified outcomes, and whether those outcomes are attributed to the agency rather than described as the client's own results. It does not measure client satisfaction, price, or availability.

Cohorts and awards

Agencies are compared within a cohort — here, SEO in United Kingdom. A cohort must be large enough to express the band being awarded: at least 8 assessed agencies for a top 25% award, 20 for top 10%, 40 for top 5%, and 300 for top 1%. This one holds 651, so the strongest award available here is top 1%.

The 192 SEO agencies not yet assessed are listed on this page but not ranked.

A further 90 were assessed and no published evidence of their work was found, so no score is shown for them.

Read the full methodology

Paid placement

Partner agencies can buy a labelled placement block above the ranking on this page. It is always marked as paid and is never mixed into the ranked list.

Placement is paid; it does not affect the ranking, cohort membership, or any agency's score. Ranking position, cohort membership and the score itself are not for sale.

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Questions

How many SEO agencies are in United Kingdom?
843 are listed on Agency List in United Kingdom. 651 of them have been assessed on the Agency List Score as of October 2026, and 561 of those carry a published score.
Which SEO agency in United Kingdom is ranked highest?
Vantage Agency, with an Agency List Score of 97.9, ranks #1 of 651 assessed agencies in SEO in United Kingdom.
Why are 282 SEO agencies listed here but not ranked?
192 of the 843 listed have not yet been assessed on the Agency List Score. A further 90 were assessed and no published evidence of their work was found, so no score is shown for them. They each have a profile and are listed below the ranking, alphabetically, rather than being hidden or mixed into it.
How is the ranking determined?
By Agency List Score, within the SEO in United Kingdom cohort of 651 assessed agencies. The score is computed from evidence published on each agency's own website: named clients, quantified outcomes, and whether the outcome is attributed to the agency. Paid placement does not affect it.