
SALT.agency
Technical SEO and AI-search consultancy working with enterprise brands and challenger brands.
Compare 56 SEO agencies with a published business address in England, plus 11 serving the area remotely.
Most documented here: Technical SEO (35) · AI Search Visibility (33) · Local SEO (21) · Shopify (7) · E-commerce (5). Counts cover the agencies listed on this site, not the whole market.
Listed A–Z. Order is not a ranking or quality score.

Technical SEO and AI-search consultancy working with enterprise brands and challenger brands.
Norwich-based digital agency with a London office, combining web design, eCommerce/Magento development and SEO.
+57% organic traffic for Hitachi AV · agency-reported

London digital marketing and data consultancy combining SEO and generative engine optimisation with analytics implementation, paid media and in-house technology tools such as a robots.txt…

Manchester SEO and web design company trading as Net Sixty Six.

Small London SEO agency offering audits, strategy, link building, content, local SEO and UX/CRO, plus PPC and paid social.
SEO and link-building company with a London office and a Los Angeles office, selling SEO, AI optimisation, digital PR and content through an online ordering dashboard.

Leicestershire web agency with its own CMS and a dedicated SEO section: technical, local and GEO services, free audits and fixed monthly SEO packages.

Bristol-area web design and digital marketing agency with a dedicated SEO service page covering audits, strategy and generative engine optimisation.

Dublin digital agency with Limerick and Cambridge (UK) offices.

Small Liverpool SEO and WordPress web design agency, also listing Birmingham.

Specialist SEO, GEO and data analytics agency with offices in Bradford on Avon and London.

North East performance agency offering SEO and Google Ads on month-to-month terms.
$1m+ organic search revenue in six months for BullX · agency-reported

Istanbul and London digital strategy consultancy advising enterprise brands on search and AI-answer visibility, performance marketing and analytics; publishes books and runs an academy.

London B2B marketing agency and HubSpot partner offering SEO, answer engine optimisation, PPC and AI consulting, with published monthly pricing on rolling contracts.

Warsaw data-driven SEO and performance agency serving international B2B and pharma/health clients in English, with a London office and a 100+ expert team.
Organic traffic increased from 125% to 726% YoY for Cetaphil · agency-reported
Sheffield agency covering SEO, PPC, paid social and digital PR, aimed at start-ups, local businesses and SMEs.
+2,500% organic traffic for Crest Surveyors · agency-reported
They state they serve United Kingdom but have no published address in England.