901 agencies indexed·Latest entry: 15 October 2026
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SEO in London · 173 agencies

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.

At a glance
  • 173 UK agencies offering seo in London
  • Part of the SEO service set
  • Indexed in London
  • Reviewed 17 May 2026
Showing 97-120 of 173 seo agencies in LondonAll SEO agencies
Netpeak Digital Agency logo
Netpeak Digital Agency
Independent·London·51-200 Employees

Established in 2006, Netpeak is a leading digital marketing agency in London, UK. Our broad spectrum of services, encompassing SEO, social media marketing, conversion rate optimisation, and mobile app marketing, sets us apart. We employ a data-driven methodology to substantially boost our clients' revenue. At Netpeak, we prioritise process automation and transparency, underpinned by our unique m

Social Media logo
Social Media
Independent·London·2-10 Employees

As a leading digital agency rooted in London, Social Media distinguishes itself through an unwavering commitment to trailblazing in the digital landscape. This firm constantly explores the latest technologies and strategies, empowering clients with inventive solutions for a competitive edge. Upholding an ethos grounded in quality and superiority, this agency transcends the role of a standard servi

KINESSO logo
KINESSO
Network·London·501-1000 Employees

As a leading agency based in London, KINESSO provides innovative, technology-driven performance marketing solutions designed to achieve tangible business results. Our core services encompass Consulting, Data & Tech, Media, Experience, and Content. We leverage advanced automation, AI capabilities, and first-party data to enhance and optimise the connection between brands and their target audiences.

Sweans logo
Sweans
Independent·London·51-200 Employees

Situated in the heart of London, Sweans proudly positions itself as a premier web design and eCommerce agency, celebrating over 16 years of industry expertise. Specialising in WordPress, Shopify, and bespoke eCommerce solutions, Sweans is committed to elevating Direct-to-Consumer (D2C) brands. With a global portfolio of more than 3,000 fulfilled clients, Sweans takes immense pride in delivering cu

Digithrive for Schools logo
Digithrive for Schools
Specialist·London·11-50 Employees

Digithrive for Schools, a premier digital and creative agency headquartered in London, delivers bespoke marketing solutions specifically for independent schools. This agency, as a subsidiary of Zest Media Group, harnesses a robust database of over 100,000 contacts and collaborates with prominent digital platforms such as Facebook and Google for crafting high-impact school marketing campaigns. The

Barracuda Digital logo
Barracuda Digital
Independent·London·11-50 Employees

Barracuda, a prominent digital marketing firm in London, UK, stands out due to its recognised skillset and inventive commercial creativity. It specialises in driving transformative results for its clients through a blend of expert knowledge, extensive experience, and pioneering methods. Barracuda provides an array of services encompassing SEO, paid media, user testing, CRO, analytics and tracking,

LoudLocal logo
LoudLocal
Independent·London·2-10 Employees

LoudLocal, a reputable digital marketing agency headquartered in Kenilworth, Warwickshire, boasts a secondary office in London. Specialising in delivering clear, straightforward digital marketing solutions, this agency is dedicated to addressing the unique requirements of small to medium-sized businesses at a local and global level. With an ethos centred around flexibility, LoudLocal shuns the con

Axonn Media logo
Axonn Media
Independent·London·2-10 Employees

Axonn is a premier digital marketing agency headquartered in London, renowned for its unique integration of cutting-edge technology and a keen focus on emotional connectivity. This distinctive approach places personal touch at the heart of all their campaigns and client relationships. Their all-encompassing services range from strategic planning, content production, campaign execution, to insightf

Dandy Marketing logo
Dandy Marketing
Independent·London·2-10 Employees

Dandy Marketing is a London-based digital marketing firm, renowned for its expertise in catering to SMEs. Setting Dandy Marketing apart is their unwavering dedication to innovation and transparency, providing unrestricted services devoid of binding contracts, whilst focusing on strategies that are not only cost-effective but yield substantial results. They are masters of augmenting their clients'

Zenith logo
Zenith
Network·London·1000+ Employees

Zenith is a London-based agency providing a robust array of advertising and marketing solutions. As an integral part of our services, we specialise in media planning and procurement, online marketing, and data analytics, all designed to enhance brand communication strategies. Our distinctive advantage at Zenith is our dedication to utilising data-led insights to craft innovative and high-impact ma

cremarc logo
cremarc
Independent·London·11-50 Employees

Based in the heart of London, Cremarc is a premier B2B digital marketing agency with a primary focus on the technology industry. Renowned for their distinctive blend of strategic planning, innovative thinking, and data-inspired insights, Cremarc delivers powerful marketing solutions to help tech businesses rise above their competitors and optimise their return on investment. By employing cutting-e

Cude Design logo
Cude Design
Independent·London·2-10 Employees

Cude Design, a Surrey-based strategic and creative web design agency in the UK, distinguishes itself through its UX-focused web design and development methodology. Their unique approach guarantees enhanced user conversion and engagement for clients across diverse sectors. Leveraging their expertise from launching and successfully exiting their own eCommerce business, Cude Design crafts efficient e

Good Signals logo
Good Signals
Independent·London·2-10 Employees

Good Signals, a London-based digital marketing agency, specialises in boosting global brand visibility on Google, optimising website conversions using A/B testing, and securing brand exposure on pertinent websites and top-tier publications. Our unique approach prioritises long-term, sustainable growth over fleeting successes. Our proprietary Find Your Way® methodology focuses on crafting bespoke s

Catch Digital logo
Catch Digital
Independent·London·11-50 Employees

Catch, a London-based digital agency, is recognised for its proficiency in crafting superior digital experience platforms. This standout agency specialises in an all-encompassing range of services, including digital strategy, experience design, technology, and performance optimisation. Emphasising its dedication to accessibility and inclusion, Catch boasts team members such as Ann Pilbeam, who ard

CB Digital Marketing logo
CB Digital Marketing
Independent·London·11-50 Employees

CB Digital is an all-encompassing digital marketing agency headquartered in London, known for its results-oriented, strategic approach. Our agency has secured superior Google rankings for hotly contested keywords by delivering personalised marketing solutions that cater to unique business requirements. CB Digital's open and cooperative methodologies empower clients with a thorough understanding of

Sapience Communications logo
Sapience Communications
Independent·London·11-50 Employees

Situated in the heart of London, Sapience Communications stands as a leading communication agency. Offering an extensive array of services such as B2B lead generation, crisis communication, and digital marketing, it caters to a broad spectrum of industries, from fintech and healthcare to sustainability. Their distinctive methodology merges strategic acumen with data-driven insights to formulate cu

Madano logo
Madano
Independent·London·11-50 Employees

Madano, a UK-based communications consultancy, distinguishes itself within the science, technology, and engineering sectors by assisting clients in crafting strategic narratives that shape the future. Our focus on these niche sectors enables us to effectively influence vital stakeholders. We uphold a solid dedication to evidence-based strategies, utilising our creative, digital, and analytical com

Blue Train Marketing logo
Blue Train Marketing
Independent·London·11-50 Employees

Blue Train Marketing, a UK-based marketing agency, excels in the fintech and payments sector. Our distinguishing factor lies in our commitment to bolster both domestic and global clients' business growth through all-encompassing services. These include branding, content production, and lead acquisition. By integrating strategic storytelling with potent marketing strategies, Blue Train Marketing en

Link Digital logo
Link Digital
Independent·London·2-10 Employees

Based in Hertfordshire, UK, Link Digital is a premier digital marketing agency specialising in delivering cost-effective, bespoke digital marketing solutions. Catering primarily to small and medium-sized enterprises, our diverse range of services encompass web design, SEO, PPC, and social media marketing. Our unique approach sets us apart, with a dedication to creating tailored strategies that dri

NBT Digital logo
NBT Digital
Independent·London·11-50 Employees

NBT is a London-based growth-centric agency, with a global footprint stretching across Turkey, the UAE, Germany, Netherlands and Florida. With a unique ecosystem that bolsters business expansion through bespoke services such as growth strategy implementation and digital marketing, NBT sets itself apart. Our signature offerings like the Growth Academy and NBT Venture Studio equip businesses with th

Propeller logo
Propeller
Independent·London·11-50 Employees

For over twenty years, Propeller has specialised in aiding clients to overcome the critical obstacles that hinder their success and disrupt their peace of mind. Propeller takes pride in partnering with renowned brands such as Twinnings, Young's, Kellogg's, Aman, Boy Smells, and several others. Functioning as an integral part of your in-house team, Propeller delivers vital strategic advice, technic

Wilderness Agency logo
Wilderness Agency
Independent·London·11-50 Employees

Wilderness Agency, a vibrant ensemble of dedicated social strategists, adept content developers, and media experts, is a hub of innovation and creativity. Our youthful and inventive team thrives on inspiration and creative energy. Wilderness Agency specialises in several fundamental areas: - **Strategy**: Powered by profound insights, we cultivate and enhance digital communities, producing sign

Social Chameleon logo
Social Chameleon
Independent·London·11-50 Employees

Operating from the heart of London and Sydney, Social Chameleon is a leading digital marketing agency renowned for its innovative Search-First Social Media® approach. Specialising in the amalgamation of social media strategies and SEO, they excel in boosting brand visibility and fostering engagement. Their extensive range of services, featuring content generation, Google Ads, and influencer market

NU Creative logo
NU Creative
Independent·London·11-50 Employees

NU Creative, a London-based strategic branding and design agency, is renowned for its all-encompassing approach. They skilfully blend strategy, creativity, and technology to construct bespoke brand narratives that truly engage the intended audience. NU Creative specialises in providing enduring digital solutions and pioneering marketing campaigns, guaranteeing each brand they collaborate with is v

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Editor's note

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.

Typical cost
£500-20,000+
per month, retainer

Boutique / freelance £500-3,000 · Mid-market £1,500-7,500 · Network £7,500-20,000+. One-off audits £1,500-10,000.

Realistic timeline
3-12 months
to compounding results

1-3mo technical foundations · 3-6mo ranking and traffic gains · 6-12mo+ revenue compounding.

Red flags
5 to watch
in any pitch
  • · 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
Frequently asked

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.

Curated by humans

UK SEO retainers in 2026 split into three tiers: boutique consultants and small specialist shops run £500-3,000 a month, mid-market agencies £1,500-7,500, and network or holding-group shops £7,500-20,000+. One-off audits land between £1,500 and £10,000 depending on site complexity. Pure performance-based pricing exists but tends to misalign incentives - Google Search Central itself warns against providers leaning on guarantees rather than process.