London is a thriving digital hub, home to some of the most innovative and results-driven SEO agencies in the world. The top 10 SEO companies in London offer a wide range of services including technical SEO, on-page optimization, link building, content strategy, and performance tracking. These agencies specialize in helping businesses of all sizes—startups, SMEs, and global brands—achieve greater visibility, higher search rankings, and increased ROI.
What sets the leading SEO companies in London apart is their combination of data-driven insights, creative content, and technical expertise. Agencies like PN Digital, Found, Pearl Lemon, and The SEO Works have proven track records in delivering long-term organic growth. They focus on ethical SEO practices, transparent reporting, and strategies tailored to the UK and international markets.
With digital competition rising rapidly, choosing the right SEO partner in London can be a game-changer. Whether you need local SEO, enterprise-level solutions, or eCommerce optimization, the top SEO companies in London are equipped with the tools, talent, and technology to drive measurable success. Investing in SEO is no longer optional—it’s essential for sustained online visibility and long-term digital success.
List of SEO companies in London
1. PN Digital
PN Digital is a high-performing member of SEO companies in London, delivering data-driven solutions since 2015. With a team of 80+, they specialize in technical SEO, content marketing, link-building, PPC, mobile app optimization, and web development. Their clients—which include B2B SaaS, e-commerce, and insurance—have achieved up to 8× more leads, 537% increased inquiries, and boosted monthly traffic to over 6,000 organic visits. PN Digital prides itself on transparent reporting, award-level service, and tailored strategies that scale with business goals.
Email: info@pndigital.co.uk
Phone: +44 20 7846 0130
Website: pndigital.co.uk
Address: Kemp House, 152 – 160 City Road, London EC1V 2NX
2. Found
About Business: Found is a multi-award-winning agency among top SEO companies in London, offering holistic SEO, PPC, content, CRO, influencer and data science services since 2005. With 120 staff, they implement their patented Everysearch™ model across platforms including Google, YouTube, TikTok, and Amazon. Found delivers cross-channel optimization and deep analytics, leading clients like Marley, Unilever, Boohoo to dramatic visibility gains—31% more visibility, 134% increased traffic, and millions of impressions per campaign.
Email: info@found.co.uk
Phone: 0207 653 6709
Website: found.co.uk
Address: Johnson Building,Johnson Gardens,77 Hatton Garden,London, EC1N 8JS
3. Pearl Lemon
Pearl Lemon is an innovative player among SEO companies in London, delivering award-winning, bespoke SEO, content, link-building, local, and technical optimization. They specialize in transparency and measurable results, helping clients from startups to enterprises secure long-term organic growth. Pearl Lemon’s tailored strategies have elevated countless client brands, positioning them as a trusted partner in London’s competitive SEO landscape.
Email: info@pearllemongroup.com
Phone: +44 7454 539583
Website: pearllemongroup.com
Address: Pearl Lemon Group Kemp House, 152 – 160 City Road London, EC1V 2NX United Kingdom
4. Impression
About Business: Impression is one of the leading SEO companies in London combining technical excellence, data-driven experimentation, and creative content. They support enterprise-level SEO, CRO, analytics and digital PR, with proprietary tech stacks and rigorous AB testing. Clients such as Clarins and Specsavers benefit from performance campaigns built for measurable growth—not just rankings. Their award credentials and deep analytics-driven approach set them apart.
Email: hello@impression.co.uk
Phone: +44 1158 242 212
Website: impressiondigital.com
Address: Runway East Borough Market, 20 St Thomas St, London, SE1 9RS
5. The SEO Works
The SEO Works is one of the most trusted SEO companies in London, serving clients like Decathlon, NHS, and House of Oak. With a decade of experience, they specialize in technical SEO, content marketing, digital PR, and platform-agnostic optimization—including WordPress and Magento sites. Their transparent reporting and focus on commercial ROI have earned them a 4.9-star rating.
Email: info@seoworks.co.uk
Phone: 0800 292 2410
Website: seoworks.co.uk
Address: Bellerive House, 3 Muirfield Cres, Isle of Dogs, London, E14 9SZ
6. Ninja Promo
Ninja Promo is among the standout SEO companies in London, specializing in technical SEO, competitor analysis, on-page, off-page, audits, and high-quality backlink building. With over 100 specialists, they shape full-scale strategies, including PPC integration and local SEO dominance. Serving clients like Atom Bank and Rebus Chain, they emphasize continuous innovation and advanced tools to generate results.
Email: media@ninjapromo.io
Phone: +44 20 3868 4672
Website: ninjapromo.io
Address: 71–75 Shelton Street, Covent Garden, London WC2H 9JQ, UK
6. Propeller
About Business: Propeller is a specialist SEO companies in London that caters to the hospitality, retail, and lifestyle sectors. With a focus on technical excellence—site structure, menu schema, and Google Maps—they deliver targeted SEO strategies based on in-depth analytics and audience insights. Clients such as Twinings and Sushi Samba benefit from campaigns built around local and content-rich visibility.
Email: info@propeller.co.uk
Phone: +44 20 7836 2736
Website: propeller.co.uk
Address: 42 Colebrooke Row London N1 8AF
7. Rapid SEO London
About Business: Rapid SEO London ranks among trusted SEO companies in London, offering tailored on-page, technical, link building, and content oversight. Their ethical practices and transparent strategies help businesses of all sizes gain traction and visibility. As part of London’s recognized SEO community, they maintain strong success metrics.
Email: info@rapidseo.london
Phone: 02078367676
Website: rapidseo.london
Address: 71-75 Shelton Street Covent Garden London
8. CEEK
CEEK is one of the dynamic SEO companies in London, founded in 2016 and based in Victoria. Their nimble 10–49 person team offers search optimization, PPC, social media, and strategic marketing. Known for serving clients like Lavazza and Small Beer Brew Co, CEEK emphasizes bespoke SEO and paid strategies with creative flair that resonate across London’s competitive digital space.
Email: info@ceek.co.uk
Phone: +44 20 8610 7070
Website: ceekmarketing.co.uk
Address: 4th Floor, CEEK Marketing, 120 Charing Cross Rd, London WC2H 0JR, United Kingdom
9. Digivate
Digivate is a forward-thinking SEO companies in London that marries AI and SEO with digital marketing and development services. Since 1998, their 10–49 person team has driven innovation for clients such as Whistl, integrating technical SEO, content strategy, web development, and social media for a comprehensive digital approach. Their blend of automation and creative strategy positions them for modern SEO success.
Email: hello@digivate.com
Phone: +44 20 7183 9341
Website: digivate.com
Address: 91, 93 Great Eastern St, London EC2A 3HZ, United Kingdom
10. Greenlight Digital
Greenlight Digital is a full-stack SEO companies in London since 2001. With 150+ employees, they specialize in SEO, PPC, content, conversion optimization, and web builds. Serving brands like ghd and international markets, their team combines technical precision, data-led strategies, and integrated digital services to maximize organic and paid growth across multi-channel campaigns.
Email: info@greenlightdigital.com
Phone: +44 20 7253 7000
Website: greenlightdigital.com
Address: The Varnish Works, 3 Bravingtons Walk, London N1 9AJ, United Kingdom
Frequently Asked Questions (FAQs):
1. What services do SEO companies in London typically offer?
SEO companies in London usually offer on-page SEO, technical audits, link-building, keyword research, local SEO, content marketing, and analytics reporting. Many also include services like conversion optimization, paid search (PPC), and digital PR to improve overall visibility.
2. How do I choose the best SEO company in London for my business?
When selecting from the many SEO companies in London, consider their industry experience, case studies, client reviews, pricing transparency, and SEO strategy approach. The best firms offer personalized strategies aligned with your business goals and target audience.
3. Are SEO companies in London suitable for international campaigns?
Yes, many SEO companies in London are experienced in managing multilingual and international SEO campaigns. They often support global businesses with localization strategies, hreflang implementation, and region-specific search optimization.
4. How much do SEO companies in London charge for their services?
Pricing for SEO companies in London varies based on project size, goals, and service scope. Monthly retainers typically range from £500 to £5,000+, depending on whether you need local SEO, enterprise SEO, or full-service digital marketing support.
5. How long does it take to see results from SEO companies in London?
Most SEO companies in London indicate that noticeable results—like increased rankings or organic traffic—start appearing within 3 to 6 months. However, the timeline depends on your industry, competition, and the technical state of your website.
6. Can SEO companies in London help with local business visibility?
Absolutely. SEO companies in London offer strong local SEO services such as Google Business Profile optimization, citation building, local keyword targeting, and location-based landing pages to boost visibility in London and nearby areas.
7. Do SEO companies in London also provide content creation?
Yes, many SEO companies in London offer content creation as part of their services. This includes SEO blog writing, landing page copy, product descriptions, and visual content strategies to support organic ranking and user engagement.
8. Are there any industry-specific SEO companies in London?
Yes, several SEO companies in London specialize in industries like e-commerce, healthcare, law, finance, hospitality, and SaaS. Choosing a niche-focused agency can help you benefit from tailored SEO strategies that align with your sector’s dynamics.
9. What are the benefits of working with SEO companies in London over freelancers?
Working with SEO companies in London provides access to dedicated teams with expertise in technical SEO, analytics, and content. Agencies typically offer scalable solutions, long-term strategy, and cross-functional support that freelancers may not always provide.
10. How do SEO companies in London measure campaign success?
Most SEO companies in London use metrics like keyword rankings, organic traffic growth, bounce rates, backlink quality, and conversion rates. Reputable agencies provide detailed monthly reports and ongoing analysis to demonstrate ROI and campaign effectiveness.
