Explore Top SEO Companies in London
Use the advanced filter to find companies near you or refine the results Last updated in: December, 2025

London, United Kingdom Head office in: United Kingdom
We are an agency who combine creativity and technology to build smarter brands to grow our clients business. Our difference? We don't stand still. Bus...
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The genuine passion of our people endears clients to Reload, but it’s their investment in achieving commercial growth which keeps them. We are a moder...
At Ayima, our main drivers are collaboration, innovation and passion. That's what helps us stand out from the crowd and makes us a digital marketing a...
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Sweans is Digital Marketing Social Media agency, having a global presence. We are one of the Google’s trusted agency which has grown with its fast-evo...
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Driving the organic digital performance of the world's most exciting brands. We’re a specialist agency driving forward the boundaries of Organic Digit...
We design and build websites & apps in London. We pride ourselves on ensuring that great design is integrated seamlessly with our technical work....
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A results focused PPC agency & Analytics consultancy. Our team develop effective digital strategies for forward thinking companies and we have a p...
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Complex Creative is a full-service creative agency providing everything associated with a high-performing, bespoke WordPress website. As a new company...
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OMdeSIGN is a digital design agency specialising in websites and branding. We make websites that make a difference to your business. Whether you nee...
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77Agency is an award-winning independent full-service digital agency with offices in London, Milan, Riga, Rome and Los Angeles. 77 delivers its client...
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London, United Kingdom Head office in: United Kingdom
We're an award-winning digital growth agency with 10 years' experience in helping established B2B businesses to gain an unfair advantage over their co...
The Dubs is the content marketing agency for the financial sector. We conceptualise, create and distribute content to meet the needs of finance brands...

London, United Kingdom Head office in: Sweden
Thanks to many awards and satisfied clients, we can safely say that Precis is now one of the leading digital marketing agencies in Europe. Our task is...

London, United Kingdom Head office in: United Kingdom
Graham Shapiro Design Ltd (GSD®) is one of the UK’s leading providers of creative visual communication solutions and services. With an aim to provide...
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Vertical Leap offers the most effective and thorough search marketing service in the UK (and probably anywhere), helping companies to maximise their v...
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London, United Kingdom Head office in: Brazil
We are a global company that blends digital marketing services, consulting and technology. 11x Great Place to Work. Specialized in Paid Search, SEO, P...
ODD is a creative agency that builds aspirational lifestyles around brands, informed by real-time cultural insight and data. Using our insight platfor...
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London, United Kingdom Head office in: United Kingdom
We help organisations improve their approach to internal and external customer experience; to retain existing customers and attract new. We help organ...
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Whitehat is an inbound marketing agency based in London. We work with B2B companies within the pharmaceutical and life science, technology (hardware a...
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Precedent is a digital experience company based in London, Hong Kong and Melbourne. Working with some of the most recognizable names in charity, HE, m...
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Crimtan is a fully programmatic, data-driven, digital marketing company based in 11 countries around the world. Crimtan turns consumer data into valua...
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Website design and digital marketing agency specialising in the recruitment industry.
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At AVC Immedia we create and we connect. We create high-tech, creative content and connect you to your audience. We use video, animation, and digital...
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London, United Kingdom Head office in: India
Brevity Software Solutions Pvt. Ltd. is the center where imagination merges with high-end technologies to optimize the business importance in the inte...
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What is SEO and what are its benefits for your projects?
SEO (search engine optimization) is the process of optimizing your website in order to get a higher ranking in organic search results and consequently more organic traffic.
SEO is a long term strategy and requires advanced knowledge of ranking algorithms and some technical background, to be able to optimize websites for popular search engines like Google, Bing, Yahoo, DuckDuckGo, etc.
According to the latest survey on digital marketing conducted by TechBehemoths, about 70% of IT companies revealed that SEO is their main channel for leads, meaning that it’s a vital marketing activity that generates traffic, prospects and sales.
Some of the benefits of SEO are:
- Free organic traffic
- Brand awareness
- Better control over brand traffic
- A vital marketing channel for leads & sales
- Supports other channels: social media, paid ads, direct traffic, etc.
- Optimizes your advertising budget
- Usually, has a higher conversion rate
- Gives you a competitive advantage
- Is a good long term investment, generating decent results
It’s not easy to find a reputable SEO company, as some SEO agencies used to provide questionable/suspicious services in the past, and lots of businesses became reluctant to pay for search engine optimization services.
When looking for and choosing an SEO service provider, you should consider a lot of aspects. Ideally, you should do some basic research, set up clear goals and ask yourself a few questions before hiring a company.
Here are some things to look for when searching for SEO agencies to partner with:
- Expertise
- Portfolio
- Years in business
- Case studies
- Price (expect to pay at least $30 / hour if you’re hiring an agency)
- Approach and particularities (technical SEO, link building, content optimization, etc.)
- Communication and reporting
TechBehemoths lists more than 26,900 SEO companies from all over the world. Check out their profiles and feel free to get in touch with them.
To ease the selection process, we’ve created a powerful filter which you can use to narrow down the results based on your requirements and shortlist the companies.
















