Explore Top SEO Companies in London
Use the advanced filter to find companies near you or refine the results Last updated in: September, 2026
Based in London, our office is only a 2-minute walk from Southgate Tube station on the Piccadilly line. We have amazing sweets available whilst we dis...
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We craft interactive experiences that speak to people's hearts. Just set the objectives and we will deliver results! We combine strategy & theory,...
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LEWIS Purestone - The Business to Person Agency. Our approach centres around the most important component in any form of marketing - human beings. We...
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London, United Kingdom Head office in: United Kingdom
Further is an award-winning digital marketing agency that helps brands define, deliver and measure commercial success online. We like to stand out fro...
Reboot is not an ordinary SEO Company. Our success emanates from the perfect balance we have achieved. A balance that encompasses skilled analytical S...
Plus Two is a creative technology agency that helps clients build positive brand experiences. We’re a London-based, independent agency with strong cli...
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We aim to deliver original, inspired web solutions that are suitable for all fields of business - these range from first time e-commerce websites to F...
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UWP are a leading digital marketing agency based in Farringdon, London. We like to think the quality of our staff sets us apart. But we would say that...
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We first opened our doors in 2002 and we knew we wanted to offer a bespoke agency service that treated clients like partners. We knew we wanted to cre...
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We work with clients to activate brands and bring content to life. We are driven by the belief that creatively-led processes shouldn’t just be reserve...
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Assertive is a London based digital marketing & conversion agency that specialises in combining SEO with user experience optimisation & conver...
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Re:signal is a fast-growing specialist SEO and content marketing agency, founded in 2012 with a team of 15 people based in London. Our vision is to be...
A Different Approach to Marketing & Amazon Consultancy FordeBaker offers a bespoke service that will be tailored for your business goals and your...
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Welcome to Four! We are one of the leading independent integrated agencies in the UK and the Gulf. We’ve grown from just seven to more than 300 peopl...
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We’ve grown steadily and evolved with the right combination of senior staff and homegrown talent. This experience allows us to put big thinking into b...
Aqueduct is strategic thinkers, designers, and engineers delivering best-in-class strategy, creative and technical expertise. Our structure guarantees...
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We grow businesses online. We like to work with business owners and SME's who want to grow their business online. We like to work with companies who u...
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We create 'Influence in the Round' for some of the UK's leading fmcg brands. Our teams influence a brand's entire product journey - building influenc...
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Digital Dialog core service offerings include digital strategy, creative concept development, digital marketing, online PR and media planning & bu...
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Our belief in design and its ability to transform is why we do what we do. Our craft, attention to detail and remaining relevant to contemporary cultu...
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London based web design and mobile agency. Internet Dreams Studio design and builds beautiful web sites and mobile apps for our clients. We combine a...

London, United Kingdom Head office in: India
We’re BRAD ADVERTISING, a global digital marketing company crafting bespoke e-commerce & mobile websites, landing Pages & portals websites, pr...
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FUNKY HOWLER is passionate about providing bespoke business solutions that grow and expand a business to the next level and beyond. Based in London he...
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London, United Kingdom Head office in: United Kingdom
Modo25 is turning the world of digital marketing inside out. We help brands to inhouse their digital marketing. We empower inhouse teams, enabling th...
Filter SEO Companies in Cities near London
Find the right tech company near you or from a specific city. Some of the best companies might be located in smaller cities.
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TechBehemoths is the world's most advanced and user-friendly platform to match IT Companies with real clients without hustle.
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 30,400 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.
SEO and search in the AI era
SEO has dramatically changed since the launch of chatbots like ChatGPT, Perplexity, Claude, etc. (post end of 2022), and disrupted the whole search industry for both business owners/publishers and users who search on the web.
User interaction has completely changed, with more users opting for natural language questions instead of search keywords.
While the traditional 10 blue links in Google or Bing are not gone, their importance has shifted , as traditional search engines now integrate summarized answers via AI (Eg. Google AI Overviews, Bing Copilot Search).
Traditional search engines are shifting to chatbot-like interfaces, where users discuss with AI and get relevant and customized answers, just like in ChatGPT or Claude.
This is good and bad news for both business owners and users.
On the positive side, AI chatbots offer endless possibilities for content creation, automation, customization, app/software development, etc. and the entry point is really low. But there are downsides too:
There have been many concerns that AI systems are using copyrighted content to train themselves and generate answers without giving credit or sending referral traffic to the original content creators.
Users can experience AI hallucinations (made up, false information), no real-time data, bias and might diminish critical thinking and evaluation of multiple sources to create an opinion or an action.
SEO is still the foundation
Being present and visible in both search engines and chatbots is critical these days. SEO is the foundation for that, as chatbots operate in a similar way: they use their large language models (LLMs) to answer questions and 3rd party sources (Bing index, web APIs, etc.) to provide real time or recent info and citations/sources within the answers.
If your website is present in Google or Bing index and ranks well in their organic search results, it’s most likely that it will be often cited in chatbots (although it’s not directly correlated).
This is why a new type of SEO has emerged: AEO (Answer Engine Optimization) or GEO (Generative Engine Optimization) which is basically SEO for AI.
To make sure that your website ranks well and is present in traditional search index and AI based search engines, you still need to have a good technical SEO foundation. Here are some fundamental aspects that you need to consider:
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Robots.txt - should be properly configured so that search engines can access your website
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Crawlability - make sure you have a sitemap and meta robots tags on pages that you want or don’t want to appear in search results
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Duplicate content - implement canonical tags, so that search engines know what are the primary/preferred pages to be indexed and ranked/cited.
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Site speed - is essential for users and search engines. Your web pages should load fast on all kinds of devices.
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Mobile first - smartphones are the primary devices for most users, so having a mobile-first website is highly recommended. For more advanced sites with high traffic volumes: PWA and mobile apps could work too.
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Schema markup - chatbots and search engines rely on structured data to better understand your pages and the type of content you are serving to users. Common schema types can be: local business, event, product, review, rating, etc.
There are other parts of SEO that should be also considered like content creation and backlink/citation building.
Content creation is a significant part of SEO and many companies choose to either outsource or automate the process by using AI tools. It’s important to note that search engines don’t penalize content created by AI, however the quality of content is vital and often content created at scale with AI, doesn’t present much value.
This is why SEO agencies can have a smart/modern approach where they use humans/professionals and AI to help them create valuable content, not just generate content that has no value.
Before you hire an SEO agency it’s important to ask and know exactly how they use AI and what’s their workflow.
Some agencies offer link building/citation building services. Our advice is to avoid bulk/automated link submission services and opt for customized and high quality link building services. Focus on quality rather than quantity.
Managing technical SEO can be overwhelming, hence you can opt for reliable SEO agencies that can make sure your website is up and ranking in search engines, while you can focus on achieving the desired business results.
How to shortlist SEO agencies for your projects?
Finding the right SEO agency for your projects might be a difficult task. That’s why, TechBehemoths offers a few tools to facilitate this process:
Search
Simply search for SEO related services and include the desired location (city or country) and browse the listings. Look at companies with awards, positive reviews, great/excellent profile strength and strong portfolios.
Feel free to get in touch with the right companies directly from listings.

Advanced filter
Use the advanced filter to narrow down your search results by lots of handy criteria like: location, technologies and tools, team size, hourly rate, review count and rating, and many more.
You can also sort the filtered results to get a more organized view of your shortlisted companies.
There is an option to save your filter results and choose to receive notifications if new companies meet your filter criteria.

Submit project
Head over to Submit project techbehemoths.com/project-submission and include your project description and specifications, and our system will match it with the best possible tech service providers. You will get a list of curated companies ready to execute your projects.





















