SEO Agencies in London

Ayima

Senior-led technical SEO consultancy for large brands, run more like a management consultancy than a marketing agency.

Brainlabs

Large London-headquartered performance marketing agency with a dedicated SEO practice of 110+ specialists, AI visibility work and enterprise ecommerce case studies.

+£400K in annual incremental revenue for Screwfix; +7.5x organic share of voice for B&Q for Kingfisher · agency-reported

Builtvisible

London SEO, content and digital PR agency, announced in March 2025 as acquired by Brave Bison.

+221% revenue uplift Award-winning +221% revenue uplift for Icelandic airline · agency-reported

ClickSlice

Boutique Hoxton agency focused on ecommerce SEO, with Shopify SEO and generative-engine pages and a podcast for ecommerce owners.

EpicEdits

SEO and AI-search visibility agency aimed at service businesses, with a specialism in private aviation and charter operators.

Evoluted

Sheffield ecommerce growth agency combining SEO, digital PR, paid media and Shopify development.

+113% search revenue Pucking great results with 113% search revenue growth for this leading ice hockey retailer · agency-reported

EXPRE

Bromley-headquartered digital agency building websites and running SEO, ads and automation, with a second office at London Bridge.

First Place SEO

Mayfair-addressed SEO agency that limits itself to one client per niche per area and publishes plan prices.

Go Up

London SEO and search marketing agency with a Los Angeles office.

225% increase in organic traffic to service pages within 18 months for AnyVan · agency-reported

Herdl

East Midlands marketing agency with offices in Ashby de la Zouch and Nottingham, running SEO campaigns in research, setup and ongoing phases with technical and link building work.

Ignite SEO

London-based SEO-only agency founded by Adam Collins.

+200% organic traffic for Fleet Evolution · agency-reported

Impression

Nottingham-born performance marketing agency with a dedicated SEO practice covering technical, ecommerce, international and local SEO plus generative engine optimisation.

47,000+ clicks in a year Generative engine optimisation strategy secures 47,000+ clicks in a year · agency-reported

Improve My Search Ranking

Bromley/London SEO agency serving local and national businesses, with ecommerce SEO, GEO/AI SEO, link cleanup and a reseller programme.

organic search traffic up by over 200% for Ski Line · agency-reported

Josh Willett

Independent technical SEO consultant with an engineering background, working directly with clients from London and France.

Global ranking for the term 'change management certification' for APMG International · agency-reported

Kaizen

Independent London agency covering SEO, digital PR, GEO/AI search and social, with a creative hub in Manchester.

942% growth in LLM traffic for Mogo Farm · agency-reported

M3.agency

Multi-office creative and digital agency (B Corp) whose digital marketing offer includes a dedicated SEO and GEO service built around technical foundations, content and trust-building.

Maratopia

London search marketing agency run by a former client-side digital executive.

MEEDEA

Young Bloomsbury agency selling web, content and marketing to service businesses, with SEO pages for technical and local SEO.

MeridianWeb

Covent Garden digital studio combining web design, SEO and automation.

Outrank

Digital marketing agency headquartered in Middlesbrough with offices in London, Edinburgh and Brighton.