Best SEO Agencies in the UK

Impression is a performance marketing agency trading as Impression Digital Limited, with offices in Nottingham, London, Manchester and New York. Its search work spans technical, ecommerce and international SEO, and sits alongside paid media, digital PR and conversion rate optimisation rather than being sold in isolation.

Marketing the Change is a Liverpool based digital marketing and development agency working in data driven SEO since 2012. Alongside search engine optimisation the team handles technical SEO audits, site speed optimisation, ecommerce and custom website builds, hosting and ongoing maintenance, treating the website itself as the asset that search performance depends on.

Rise at Seven describes itself as a search first organic media agency, planning content across SEO, social, digital PR and AI search. It operates three offices serving Manchester, London and New York, and has moved a substantial part of its offer towards AI visibility and generative engine optimisation.

The SEO Works is an employee owned agency established in 2009, based in Sheffield with offices in London and Leeds. It states a team of more than 80 specialists covering organic, technical and AI search, generative engine optimisation, digital PR, paid media and web development.

Journey Further is a performance marketing agency built around three disciplines: marketing science, organic media and paid media. It works from offices in Leeds, Manchester and London, with a further office in New York.

NOVOS is an ecommerce specialist agency working on SEO, AI engine optimisation, digital PR and paid media for online retail brands. Its stated focus is Shopify work, site migrations, and understanding how customers search and compare before they buy.

Cedarwood Digital is a Manchester agency covering SEO, digital PR and link building alongside paid media. It has been recognised at the UK Search Awards and European Search Awards, including Best Small Integrated Agency for 2025/2026 and awards for search campaigns in competitive verticals.

Embryo is a full service digital marketing agency based in Manchester, combining SEO and digital PR with paid search, paid social, content, web development and conversion rate optimisation for clients across the UK and internationally.

Builtvisible is a London agency specialising in SEO, content and digital PR, offering organic strategy, campaign work and consultancy on digital transformation. It is now part of Brave Bison rather than operating independently.

Screaming Frog is a search marketing agency based in Henley-on-Thames, Oxfordshire. The company is best known outside its client work for building the Screaming Frog SEO Spider, a website crawler used across the industry, and the Log File Analyser. Its agency services cover technical SEO, link building, digital PR, paid search and AI search optimisation.

Croud is a digital marketing agency headquartered in London. The agency runs search as an integrated discipline rather than a standalone service, and its published client work includes improving visibility inside AI search results.

Dark Horse is a Manchester agency trading as Dark Horse Digital Ltd. Its search work covers technical SEO, international SEO, local SEO and site migrations, with dedicated ecommerce services for Shopify and Magento stores. The agency also offers generative engine optimisation.

CandidSky is a Manchester digital marketing agency founded in 2006, working with both B2B and B2C brands. Its search services include technical SEO, international SEO, ecommerce SEO, local SEO, AI SEO and website migrations, alongside digital PR and paid advertising.

Hallam is a digital marketing agency based in Nottingham. The agency groups its work under organic search, AI search, digital strategy and content marketing, with analytics and measurement running alongside.

Bring Digital is a Manchester agency working across SEO strategy, technical SEO, digital PR and content marketing. Its search and digital PR teams work together on the same accounts rather than being sold separately.