10 Best SEO Companies in London (2023)

If you’re looking for an SEO company in London, it can feel overwhelming with the number of options, all of which appear to offer the same services. How are you meant to know which company to choose? Will they get the results that they promise?

To help you make the best choice, we’ve rounded up some leading SEO agencies on the market. To be eligible for the list, we’ve considered factors such as reviews, pricing, case studies, services and specialities.

Here are the 10 best SEO companies in London.

1. Writing Studio

Writing Studio is a content writing company that provides SEO writing services. We write search-friendly content that engages users, ranks high, increases organic traffic, and helps you increase revenue.

We are committed to helping you create content that gets results and can help you no matter what industry you are in or what quantity of content you require. We are best for the following content types: articles, pages, and product descriptions. But we can also help with other content types to support your SEO campaign, such as press releases.

To learn more about how Writing Studio can help you create better content for your SEO effort, please get in touch with our team. We’d love to learn more about your content needs and see how we can help.

2. Blue Array

Blue Array is the UK’s largest specialist SEO agency with offices in the centre of London. Blue Array’s mission is that they believe in SEO and its power to take clients to places they never thought possible.

Blue Array offers various SEO services, including a full SEO audit to review your backlink profile, technical health, organic visibility against competitors and more. Then they perform in-depth keyword research, followed by the implementation of your SEO roadmap.

This agency has worked with companies such as Zoopla hey car, and Warner Music Group, plus they have excellent reviews from past and present clients.

3. Go Up

Go Up is a London-based search marketing and SEO company that works with small and large businesses. They help internationally recognised brands, governments and even small local businesses in a wide range of sectors and industries.

As a company, they aim to drive targeted and relevant traffic to your website to help improve overall search engine visibility and then look to convert that increased traffic into more sales and enquiries.

Go Up follow several steps in each SEO campaign, including but not limited to competitor research, website audits, keyword research, onsite optimisation, internal link analysis, and link building. They also offer complementary services to SEO, such as content marketing and CRO.

4. Figment Agency

Figment Agency is an award-winning digital marketing in London primarily focusing on SEO services. They help support businesses on a mission to drive more leads, increase sales, and establish more brand awareness.

Figment Agency provides a fully-managed offering to help clients achieve results. They pride themselves on having a unique blend of technical and creative skills to help maximise SEO results.

Their services include content creation, optimising speed, URLs, metadata, code, and images to ensure your website is optimised for search engines. They can help with off-page optimisation, including guest posting, business citations and manual outreach to help you establish a higher website authority.

5. Pearl Lemon

Pearl Lemon is an award-winning SEO agency that has experience offering various SEO services. They are a global remote team with over 25 years of combined experience and a track record of getting client results.

Pearl Lemon has five core values: transparency, value contributions, the best talent, results-driven, tech-savvy, and nurturing relationships. The SEO services they offer include technical SEO, WordPress SEO, e-commerce SEO, YouTube SEO, international SEO, strategy, SEO audits, and on-page SEO.

Alongside Pearl Lemon’s numerous awards, they have also gathered 228 + total reviews from past clients and some great case studies showcasing their ability to get results.

6. The SEO Works

The SEO Works is an SEO company that helps companies get more customers online. This agency has worked with companies such as Bitcoin.com, the University of Sheffield, and Hunters.

While they primarily offer SEO services, such as keyword research, audits, SEO content creation, and technical SEO, this agency also provides other services that complement SEO and help you reach your audeince wherever they are on the web.

The SEO Works have won multiple awards for excellent in SEO and have great reviews on Google and Clutch, indicating that they are a trustworthy agency that gets results.

7. PNdigital

PNdigital is an SEO agency that helps agencies generate more inbound leads and sales from SEO. They have great reviews on Google, Clutch, Trustpilot, and other platforms and are a trusted agency locally and internationally. 

They have achieved impressive results for their client base, including over 1 million page 1 organic results, and they have helped generate over £250M in additional revenue over the last 12 months.

The SEO services PNdigital offers include web design (with SEO in mind), specialist keyword research, SEO audits, and link-building services. They can also help you create search-friendly content for your SEO campaign.

8. ClickSlice

ClickSlice is an award-winning SEO agency dedicated to being ROI-focused, transparent, and effective. They help companies boost their online visibility, generate more traffic and increase sales.

ClickSlice offers several features of SEO services, ranging from general SEO to SEO training, link building, local SEO, SEO consulting, and e-commerce SEO. More specifically, ClickSlice can help with keyword research, competitor analysis, on-page SEO, and off-page SEO.

With 127 projects completed, a 5 x average ROI, 891 page 1 rankings and many positive reviews from clients, ClickSlice is a good choice.

9. Passion Digital

Passion Digital is a performance digital marketing agency with a passionate team of digital marketers ready to plan and carry out campaigns that get results.

The services Passion Digital offers include insight and strategy, organic marketing, paid media, and web performance. More specifically, they can help with everything from SEO and content marketing to Amazon Ads and website design/development.

Passion Digital has many positive reviews from clients, has worked with well-known organisations, and has excellent case studies showcasing what they were able to achieve for their clients.

10. UWP Group

UWP Group is London’s premier digital marketing and web design company. They offer various world-class digital marketing services, including design, PPC, social media, SEO, content, and PR.

 The clients UPW Group works with vary. They help big and small organisations, including Keatons, Victim Support, Southbank-IT, and more. Based on the case studies on their website, it’s clear they understand all aspects of digital and can get results, regardless of whether you need help with SEO, PPC, content, or all of the above.

UPW Group has great reviews on Google from clients and upholds a strong reputation, having won multiple awards for the digital campaigns they have completed.

The bottom line

Choosing an SEO company to work with is an important decision. Hopefully, this list helps you connect with a company you develop a mutually beneficial partnership with.

While the agencies listed here are great, please ensure you vet each one carefully before committing to any contracts, especially if you expect to invest considerable funds into SEO. Best of luck!