SEO agencies in London.
SEO is the discipline of earning the right traffic from Google for free, plus - increasingly in 2026 - being chosen, cited, and summarised by AI answer engines like ChatGPT, Perplexity, and Google's AI Overviews. Done well it compounds. Done poorly it's expensive theatre. This page shows every agency on AgencyIndex offering seo in London.

As a top-ranking web design agency, Web Design Agency UK, based in London, delivers bespoke web design and development services to a broad client base across London and throughout the UK. Renowned for its reliability and profound experience, our agency excels in web design, branding, and digital marketing strategies. We provide all-inclusive design and development packages, specifically tailored f

Digital Media Ads, a premier Digital Marketing Agency, is strategically located in the heart of London. Our unique selling proposition is our dedication to levelling the digital playing field by offering top-tier digital marketing solutions, usually exclusive to large tech firms, to small and medium-sized enterprises. We have a proven history of boosting sales and return on investment (ROI) for ou

Digimax Derma, nestled in the heart of Marylebone, London, is a premier facial aesthetics marketing agency. Specialising in crafting brand identities for aesthetic clinics, their expertise lies in delivering award-winning website design and Google marketing strategies. What distinguishes Digimax Derma from the competition is their extensive experience working with numerous top-tier non-aesthetic b

Doogheno, an esteemed marketing firm operating from London, has earned a reputation for its award-winning services. Currently, Doogheno is broadening its horizons beyond conventional B2B marketing, aiming to provide all-encompassing business support for SMEs. This is achieved by harnessing our internal proficiency and extensive partner network. Our innovative model incorporates playing the role of

PRISM⁵⁵ is a forward-thinking digital firm with its roots in Guildford and Exeter, UK. Renowned for its commitment to achieving tangible outcomes, PRISM⁵⁵ champions a cooperative, strategy-led approach that prioritises critical questioning to formulate efficient strategies swiftly. Combining cutting-edge design with advanced development and imaginative marketing, PRISM⁵⁵ crafts secure, robust, and

Goldfish is a multifaceted digital marketing firm with a strong presence in London, Bucharest, and Vancouver. Their distinctive blend of business consultation, narrative marketing, innovative design, tech proficiency, and data-backed insights set them apart from the rest in the digital marketing landscape. As a full-service digital marketing agency, Goldfish is dedicated to delivering high-impact

Cynosure Designs, a London-based digital marketing agency, specialises in enhancing brand visibility and driving ROI with additional branches in Dubai and Lahore. Renowned for our dynamic collaborations and digital marketing proficiency, we curate bespoke strategies that amplify your brand's presence. Our blend of creative ingenuity and data-led precision provides a holistic array of services, inc

Tann Westlake specialises in transforming ambitious visions into tangible results for its clientele. Our expertise spans the rejuvenation of brands, enhancing website traffic and lead generation, surpassing advertising objectives, and invigorating video content. Nestled in the heart of West Sussex, Tann Westlake partners with both national and local businesses, driving forward inventive designs an

Tactic Marketing, your premier destination for superior branding and marketing solutions, houses a team of creative experts devoted to crafting unique strategies. As your go-to marketing resource, we at Tactic Marketing use focused and strategic methodologies to connect with the audience you seek to transform into loyal customers. Harnessing the power of first-rate marketing techniques, we guarant

Lemonat is a London-based innovative creative agency. We excel in morphing business concepts into victorious mobile applications and websites, employing a potent mix of strategic insight, creative flair, and leading-edge technology. Our unique selling point is our comprehensive methodology that seamlessly integrates robust strategic groundwork with pioneering design and high-tech execution. This g

Forward Digital, a distinguished software development agency in the UK, excels in crafting personalised websites and mobile applications. They equip inventive businesses with customised software solutions, specifically designed to overcome individual obstacles and promote expansion. Their unique selling point is their cooperative methodology, which includes clients in every step of the development

Fat Fish Marketing, a Northern Ireland-based digital marketing agency, thrives on its data-driven approach. Renowned for its dedication to not only enhancing organic traffic but also boosting client sales, this brand shines in its speciality services such as search engine optimisation and the creation of SEO-friendly websites. Named among the Top 10 SEO Companies in the UK, Fat Fish Marketing stan

Kinsman & Co, a London-based all-inclusive marketing agency, is renowned for its extensive range of digital marketing solutions. With specialisation in pioneering video production, strategic social media planning, and effective PPC campaigns, they are the go-to agency for an integrated approach to bolstering your marketing visibility and delivering measurable outcomes. Their proficiency in devisin

Five Fifty Five is an innovative marketing firm nestled in the heart of London, UK. As a unique blend of human ingenuity and advanced AI, this agency offers bespoke marketing solutions and expert advisory services specifically designed for B2B organisations. Their distinctive methodology equips marketing departments with state-of-the-art tools and customised AI-led strategies that excel beyond the

Caliston, a leading digital marketing agency situated in the heart of London, champions a unique approach to business growth hacking and website user monetisation. With an impressive track record spanning over 17 years, Caliston has honed its expertise in marketing, design, and development across diverse business sectors in the UK. This top-tier agency stands out, not just for its creative flair a

Studiomade, a London-based strategic design and digital agency, excels in assisting businesses to thrive and launch innovative ventures through their expertise in branding, technology, and digital solutions. The agency's distinct mission sets it apart, demonstrating its ability to pivot and excel in a variety of industries. With a unique approach towards developing trailblazing projects such as us

Nerds Agency, a celebrated digital agency situated in London, UK, boasts a wide array of services such as website creation, social media handling, digital marketing strategies, brand crafting, and graphic design solutions. Their dedication to ongoing learning and development sets them apart, keeping them ahead of the curve in industry trends, and ensuring they deliver outstanding results for their

Effra, a London-based web design and build agency, specialises in crafting highly functional, CMS-integrated, and mobile-optimised websites customised for start-ups, charities, and SMEs. With over three decades of industry experience, Effra sets itself apart with its transparent, agile methodology and dedication to user-centric design. This ensures not only efficient but also future-ready digital

Sixtwo, a London-based website design agency, distinguishes itself through its dedication to crafting unique, compelling websites that instigate dialogue and nurture relationships. The emphasis they place on client-centric experiences promises an enjoyable and immersive design journey. Their comprehensive, customised solutions extend from digital consulting and UX strategy to tailor-made website a

Based in London, UK, Navigator International is a distinguished digital marketing and storytelling agency. Our unique approach fuses captivating narrative techniques with data-led insights, providing a total 360-degree solution that flawlessly syncs across all digital platforms. Our services are designed to fulfil immediate business requirements while also focusing on enduring brand objectives. We

77Agency is a leading digital marketing firm, situated in an undisclosed locale, renowned for its innovative 360° digital marketing strategy. Our comprehensive suite of services includes integrated digital campaigns, creative and media strategies, and website development. We pride ourselves on our localised approach and inventive campaigns. Over the years, 77Agency has partnered with esteemed bran

Brand42, a London-based independent design and digital agency, distinguishes itself through its award-winning methodology in providing strategic branding solutions. Specialising in engaging and globally adaptable digital design, Brand42 is renowned for its unique approach. The innovative one-team strategy employed by the agency successfully bypasses bureaucratic hurdles, thus guaranteeing an exped

Based in London, Odiono is a distinguished digital marketing agency renowned for its proficiency in website development, SEO, PPC, and social media marketing. In a strategic move, Odiono has teamed up with TMH Media, thus forming TMH Digital - a robust entity offering a potent mix of digital and offline media services. This alliance offers a unified approach to marketing, optimising the robust cap

As a leading web design agency headquartered in London, Zebedee is the trusted choice of prominent international brands for the production of visually arresting, high-performance, and sturdy websites. Our clients have the flexibility to choose from our bespoke services or entrust the full process to Zebedee - encompassing everything from web strategy and design, to hosting and continuous support.
AgencyIndex tracks 173 seo agencies in London. The list above is filtered to that intersection and ordered with verified and featured listings first.
For the wider editor's view on seo agencies in the UK, see the seo service brief. For context on London's marketing cluster, see the London location brief. The pricing, timeline and red-flag notes below apply to seo as a discipline; they do not change materially in London.
Boutique / freelance £500-3,000 · Mid-market £1,500-7,500 · Network £7,500-20,000+. One-off audits £1,500-10,000.
1-3mo technical foundations · 3-6mo ranking and traffic gains · 6-12mo+ revenue compounding.
- · Guaranteed rankings or 'top 3 in 30 days' promises
- · Pure performance-based pricing (misaligns incentives)
- · Aggressive link building or 'private networks' (PBNs)
- · Vague reporting that won't connect to revenue
- · No request for Search Console + analytics access
Other services in London.
What brands ask about seo agencies.
The 5 questions our editors get most often, answered honestly. These apply to seo as a discipline regardless of city.