______ BEST SEO AGENCIES

The Best SEO Agencies in 2025

SEO isn’t just about higher rankings on Google’s search results. It’s about attracting the right audience, driving quality traffic, and boosting conversions.

That’s why finding the best SEO agency to deliver strong SEO strategies is non-negotiable in today’s competitive landscape, where algorithms are constantly evolving.

Whether you’re after technical know-how, out-of-the-box strategies, or a combination of both SEO services, this guide highlights the top SEO agencies in the UK and beyond. Read on to find the best SEO agency to match your goals, budget, and industry.

Table of Contents

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SEO Agency Comparison

We’ve summarised all the information in this article into a quick-to-read table format so you can easily compare SEO agencies at a glance.

Agency Icon Agency Location Icon Location Clients Icon Notable Clients Why Stand Out Icon Why They Stand Out Ideal For Icon Ideal For
Reboot Online Remote (UK)
  • Uswitch
  • Mattress Online
  • Clear It Waste
  • Data-driven strategies backed by real-world experiments
  • Specialist teams for Europe
  • SEO, Digital PR, Paid Media, and Data Marketing
Brands seeking a data-driven partner for long-term growth.
SALT.agency Leeds, UK (Global offices)
  • Travel Supermarket
  • Cloudflare
  • Twill
  • Decades of technical SEO expertise
  • Tailored strategies aligned with business objectives
Companies of all sizes seeking technical SEO expertise.
Impression Nottingham, UK (Global offices)
  • Cancer Research UK
  • Topps Tiles
  • Specsavers
  • Combines technical expertise with creative flair
  • Recognised for performance and paid media campaigns
Brands seeking to transform from market players to leaders.
Screaming Frog Henley-on-Thames, UK
  • Disney
  • Virgin
  • Alzheimer's Society
  • Creators of the industry-leading SEO Spider tool
  • Strong expertise in technical SEO and digital PR
Brands of all sizes needing technical SEO expertise and comprehensive search marketing strategies.
Rise at Seven Sheffield, UK (Global offices)
  • PrettyLittleThing
  • GoCompare
  • Gymshark
  • Combines creativity and SEO for viral campaigns
  • Expertise in digital PR and content marketing
Brands wanting bold, creative campaigns to stand out in eCommerce and retail sectors.
The SEO Works Sheffield, UK (UK offices)
  • Loopcloud
  • House of Oak
  • Imburse
  • ROI-driven campaigns
  • Certified Google Premier Partner
  • Strong local SEO expertise
SMEs and leading brands looking to increase revenue and measurable results.
Delante Kraków, Poland
  • NOTINO
  • LuxTrade
  • Fellowes
  • Expertise across 20+ international markets
  • Strong experience with niche industries like CBD and fintech
Businesses seeking international SEO and niche market expertise.
NP Digital San Diego, CA (Global offices)
  • United Airlines
  • Stripe
  • Sony Music
  • Black & Decker
  • Renowned tools like Ubersuggest
  • High ROI from data-backed strategies
  • Expertise across diverse industries
Businesses in eCommerce, B2B, or tech sectors looking for scalable growth.
WebFX Harrisburg, PA (Global offices)
  • HydroWorx
  • Furbo
  • PaulB Parts
  • Proprietary tools like MarketingCloudFX
  • Comprehensive digital services including web design and PPC
SMEs to large corporations seeking data-driven digital marketing.
Click Consult Cheshire, UK (UK offices)
  • Regatta Outdoors
  • Kwik Fit
  • CV Library
  • Broad international experience
  • Focus on learning and development
  • Scalable SEO and PPC strategies
  • Startups and global enterprises requiring robust SEO and PPC campaigns
Startups and global enterprises requiring robust SEO and PPC campaigns.

Best SEO Service Offerings

We’ve also analysed each agency’s SEO services to summarise what each offers. We have used criteria that we think make for the best SEO services and have scanned each agency’s website and social media presence to compare their offerings.

Please note that the above table is based on our findings and understanding taken from each individual agency website. This is subject to change. Please get in touch to make any corrections by emailing [email protected].

20 Best SEO Agencies in 2025

1. Reboot Online

Reboot Online is a UK-based search marketing agency specialising in data-driven, experiment-backed SEO strategies. Search engine optimisation forms the bedrock of its services, which also include digital PR, content, paid media, and data marketing. The UK SEO agency works with clients in eCommerce, finance, travel, B2B, iGaming, and many other sectors to improve their visibility and performance.

Location:

Reboot is based in the UK, but the team is fully remote.

Notable Clients:

LiveFootballTickets, Uswitch, Mattress Online, Clear It Waste

Why They Stand Out:

Headline awards in 2024:

Ideal For:

Brands looking for a data-driven SEO partner to improve visibility and drive long-term growth.


2. SALT.agency

SALT is an international technical SEO agency that offers SEO services to help businesses improve their online visibility. It specialises in international SEO and digital marketing and works with companies in various sectors, from transport and logistics to finance and fintech. SALT claims to be “the most unique SEO agency in the world, at the forefront of technical marketing.”

Location:

SALT is based in Leeds, Yorkshire, in England. They also have offices in London and Boston, United States.

Notable Clients:

Travel Supermarket, Cloudflare, Twill, The University of Leeds

Why They Stand Out:

Headline awards in 2024:

Ideal For:

Businesses of all sizes, from SMEs to large corporations, seeking technical SEO expertise.


3. Impression

Impression is a UK-based digital agency known for combining technical expertise with creativity. It uses best-practice digital marketing techniques and data-driven insights to help transform its clients from market players to market leaders.

Location:

Impression is based in Nottingham, England. They also have offices in Manchester, London, and New York.

Notable Clients:

Topps Tiles, Cancer Research UK, Clarins, Specsavers

Why They Stand Out:

Headline Awards in 2024:

Ideal For:

Brands wanting to grow their online presence, build trust with their audience, and establish themselves as a reliable resource with creative flair.


4. Screaming Frog

Screaming Frog is a UK-based technical SEO and digital marketing agency renowned for their SEO tools and search strategies that drive results. They work with businesses of all sizes, including large brands, start-ups, and small and medium-sized enterprises.

Location:

Screaming Frog is based in Henley-on-Thames, Oxfordshire, England.

Notable Clients:

Alzheimer's Society, Which?, Disney, Virgin

Why They Stand Out:

Headline Awards in 2024:

Ideal For:

Brands of all sizes looking for technical SEO expertise and comprehensive search marketing strategies.


5. Rise at Seven

Rise at Seven is a global creative SEO agency specialising in SEO, digital PR, and content marketing. Its focus is on delivering standout campaigns that blend creativity with data to drive organic growth for clients across the eCommerce, retail, and lifestyle sectors.

Location:

Rise at Seven is a global creative SEO agency specialising in SEO, digital PR, and content marketing. Its focus is on delivering standout campaigns that blend creativity with data to drive organic growth for clients across the eCommerce, retail, and lifestyle sectors.

Notable Clients:

PrettyLittleThing, GoCompare, Missguided, Gymshark

Why They Stand Out:

Headline Awards in 2024:

Ideal For:

Brands wanting bold, creative campaigns to stand out (and go viral) in competitive markets—particularly those in the eCommerce and retail sectors.


6. The SEO Works

The SEO Works is an award-winning search marketing agency helping SMEs and leading brands enhance online performance through their own tried-and-tested techniques, technical knowledge, and creativity. They work with clients in various sectors, including automotive, education, health, and manufacturing.

Location:

The SEO Works is based in Sheffield, England. They also have offices in Leeds and London.

Notable Clients:

Absolute Reg, Loopcloud, House of Oak, Imburse

Why They Stand Out:

Headline Awards in 2024:

Ideal For:

Integrated Digital Agency of the Year at the Digital Excellence Awards


7. Delante

Delante is an international SEO and SEM agency specialising in customised SEO strategies. They focus on helping businesses improve their online presence through comprehensive on-site and off-site optimisation, content creation, and link-building services.

Location:

Delante is based in Kraków, Poland.

Notable Clients:

LuxTrade, Youniq, Fellowes, NOTINO

Why They Stand Out:

Headline Awards in 2024:

Ideal For:

Businesses looking to expand internationally or improve SEO performance — especially in challenging industries.


8. NP Digital

NP Digital is a global digital marketing agency specialising in performance-driven SEO, paid media, and digital strategy. They focus on helping brands achieve measurable growth through data-backed marketing strategies across various sectors, including eCommerce, B2B, and technology.

Location:

Their headquarters are in San Diego, California, in the United States. They also have offices in Chicago, Utah, Brazil, India, Australia, London, and the Netherlands.

Notable Clients:

United Airlines, Stripe, Sony Music, Black & Decker

Why They Stand Out:

Headline Awards in 2024:

Ideal For:

Businesses in eCommerce, B2B, or tech sectors looking for a data-first approach to SEO and digital marketing and scalable growth.


9. WebFX

WebFX is a full-service digital marketing agency specialising in digital marketing, web design, and web development. Based on client's needs and goals, they create custom strategies to help them increase revenue, visibility, and conversions.

Location:

WebFX is a full-service digital marketing agency specialising in digital marketing, web design, and web development. Based on client's needs and goals, they create custom strategies to help them increase revenue, visibility, and conversions.

Notable Clients:

HydroWorx, All Pro Trailer Superstore, Furbo, PaulB Parts

Why They Stand Out:

Headline Awards in 2024:

Ideal For:

SMEs to large corporations seeking a comprehensive, data-driven digital marketing partner.


10. Click Consult

Click Consult is a UK-based search marketing agency specialising in organic SEO, PPC, and analytics. It combines industry knowledge and cross-channel experience to create tailored strategies that help brands grow online. Click Consult is part of Ceuta Group and has a portfolio of more than 60 clients worldwide.

Location:

Click Consult is based in Cheshire, England. They also have a London office located in Euston.

Notable Clients:

Regatta Outdoors, Kwik Fit, Oxfam, CV Library

Why They Stand Out:

Headline Awards in 2024:

Ideal For:

Start-ups and international enterprises needing scalable SEO and PPC strategies.


11. Blue Array

Blue Array is a UK-based specialist SEO consultancy that helps businesses of all sizes, from startups to major corporations, improve their online visibility and drive organic traffic with a focused, strategic approach. They work with a range of niches, from non-profits to eCommerce stores.

Location:

Blue Array is based in Reading, England.

Notable Clients:

Zoopla, Blood Cancer UK, Superdry, RAC

Why They Stand Out:

Headline Awards in 2024:

Ideal For:

Startups and scale-ups looking for expert SEO guidance and tailored strategies to boost growth.


12. Bring Digital

Bring Digital is a UK-based performance marketing agency specialising in SEO and paid media, with a focus on growing brands through bespoke campaigns. They are an agency built exclusively for eCommerce brands, with cross-channel experience and expertise.

Location:

Bring Digital is based in Manchester, England.

Notable Clients:

In The Style, Cook Serve Enjoy, The Rug Company, Land of Beds

Why They Stand Out:

Headline Awards in 2024:

Ideal For:

Brands in the eCommerce niche seeking expert guidance to improve organic traffic and achieve sales growth.


13. ClickSlice

ClickSlice is a London-based SEO agency that specialises in driving growth for eCommerce and service-based businesses through bespoke campaigns. It conducts thorough research and competitor analysis to develop tailored strategies that increase organic sales.

Location:

ClickSlice is based in London, England, but the team is fully remote

Notable Clients:

Forbes, Project Solar UK, Felina Eco Bike Company

Why They Stand Out:

Headline Awards in 2024:

Ideal For:

Service-based and eCommerce businesses wanting tailored SEO strategies to boost organic sales and revenue.


14. Digitaloft

Digitaloft is a UK-based SEO and digital PR agency that combines technical expertise with creative content to help businesses improve their online visibility and brand awareness. They deliver results for their clients through digital PR, SEO, and content marketing services.

Location:

Digitaloft is based in Kendal, Cumbria, England. They also have an office located in Manchester.

Notable Clients:

Compare the Market, JD Group, Bill Plant Driving School, Cosmetify

Why They Stand Out:

Headline Awards in 2024:

Ideal For:

Brands looking to combine technical SEO and PR expertise for measurable growth in visibility and revenue.


15. Distinctly

Distinctly is an SEO-led digital marketing agency specialising in SEO, paid media, digital PR and content. They use a blend of creative and technical expertise to deliver campaigns designed to improve online performance and engagement.

Location:

Distinctly is based in London, England, and has an office in Rickmansworth, Hertfordshire, just outside London.

Notable Clients:

Arsenal FC, JVC, Wilkinson Sword, BoConcept

Why They Stand Out:

Headline Awards in 2024:

Ideal For:

Brands seeking a hands-on, tailored approach to SEO and digital marketing campaigns.


16. Builtvisible

Builtvisible is a London-based organic digital marketing agency specialising in SEO, content marketing, and data strategies. They help businesses increase online visibility and performance by aligning marketing strategies with user needs. The agency works with brands across various industries, from finance and retail to ecommerce and travel.

Location:

Builtvisible is based in London, England, and its office is in Shoreditch.

Notable Clients:

Vitality, Lastminute.com, Icelandair, Very

Why They Stand Out:

Headline Awards in 2024:

Ideal For:

Brands seeking a partner with in-depth technical expertise and a consultative approach to SEO and content.


17. Wolfgang Digital

Wolfgang Digital is an Ireland-based digital marketing agency that focuses on driving revenue growth for clients through SEO, paid media, and content marketing. Its website claims to help clients “grow online revenue by an average of 32% per annum.”

Location:

Wolfgang Digital is based in Dublin, Ireland.

Notable Clients:

Xero, Zurich, Dalata Hotel Group, Woodie’s

Why They Stand Out:

Headline Awards in 2024:

Ideal For:

Businesses seeking a strategic, multi-channel approach to digital growth, including SEO and paid media.


18. Thrive Agency

Thrive is a full-service digital marketing agency specialising in SEO, web design, and online advertising. They are known for their client-centric approach and helping businesses achieve measurable results through tailored marketing strategies.

Location:

Thrive is located in America and based in Arlington, Texas. They also have offices in Dallas, Texas, and Atlanta, Georgia.

Notable Clients:

Affiliated Bank, SP Air USA, Ready Seal, Austin College

Why They Stand Out:

Headline Awards in 2024:

Ideal For:

Businesses seeking a personalised, results-focused approach to SEO and digital marketing.


19. Mediaworks

Mediaworks is a UK-based full-service agency that specialises in delivering integrated SEO, branding, and performance strategies to help brands drive sustainable growth and achieve their commercial goals. It works with brands in a range of sectors, from automotive and finance to retail and construction.

Location:

Mediaworks is based in Gateshead, Newcastle, England, and has offices in Leeds, London, Manchester, and Edinburgh, Scotland.

Notable Clients:

Travis Perkins, Tombola, Worldpay, Southern Water

Why They Stand Out:

Headline Awards in 2024:

Ideal For:

Businesses looking for a comprehensive marketing partner with strong SEO capabilities and industry expertise.


20. Verve Search

Verve Search is a London-based creative SEO and digital PR agency specialising in delivering innovative campaigns designed to improve organic search rankings and drive brand awareness. They work with clients in various sectors, from health and fintech to software and eCommerce.

Location:

Verve Search is based in London, England, and its office is in Waterloo.

Notable Clients:

LookFantastic, Admiral, Canva, Tide

Why They Stand Out:

Headline Awards in 2024:

Ideal For:

Businesses looking to elevate their organic presence globally, leveraging creative campaigns and technical expertise.


What Makes a Top SEO Agency?

Choosing the right SEO agency is crucial for achieving long-term success online. The best SEO agencies combine technical expertise with a deep understanding of your industry and business goals. Look for a team with demonstrable experience in your sector, backed by case studies and measurable success metrics that prove their ability to deliver results.

Proven results are just the beginning. A top SEO agency should also offer a range of tailored services, whether you’re seeking a full-service solution or niche expertise like technical SEO or digital PR. Client testimonials and independent reviews provide valuable insight into an agency’s trustworthiness and track record, helping you gauge their capabilities and how well they collaborate with clients.

Effective communication is another hallmark of a strong agency partnership. Clear, transparent reporting and a collaborative approach ensure you stay informed and aligned throughout the campaign.

Complete list of criteria to consider:

  • Industry experience: Expertise in your specific sector
  • Proven results: Case studies, success metrics, and portfolio
  • Service offerings: Full-service vs niche services
  • Client testimonials and reviews: Social proof of trustworthiness
  • Communication and collaboration: Ease of working together
  • Pricing and flexibility: Matching budgets and expectations

How Much Should an SEO Agency Cost?

SEO agency costs can vary significantly depending on the expertise of the SEO services company, the scope of the project, and the specific services offered. In the UK, small-scale projects might start at around £500–£2,000 per month, while more comprehensive campaigns for larger businesses can range from £3,000 to £10,000 or more per month. Some agencies also offer one-off packages, such as SEO audits, typically costing between £1,000 and £5,000.

It’s important to focus on value rather than price. A good SEO agency should offer transparency around their pricing and deliver measurable results that justify the investment. Although enticing, remember that cheap SEO services can lead to subpar results or even Google penalties.

Is It Worth Hiring an SEO Company?

Hiring an SEO company can be a game-changer for your business if you lack in-house expertise or resources to implement an effective SEO strategy. A skilled agency brings technical knowledge, industry insights, and proven methodologies that can help drive results for your business.

SEO is a long-term investment, and partnering with the right agency can provide a strong return. Agencies can also stay on top of algorithm updates and trends, ensuring your website remains competitive in search results. While the initial cost might seem unnecessary—especially if your business is new to SEO—the time and expertise saved often make hiring an SEO company worthwhile.

Questions to Ask an SEO Agency

How do you know you’re hiring the best SEO agency for your company? One way to ensure you make the right decision is by treating the consultation process like a job interview. From our years of experience in SEO, we’ve compiled a list of questions you should ask to find the best SEO agency for your needs before committing.

What SEO areas do you specialise in?

How do you measure SEO success for clients?

Can you explain your approach to on-page SEO?

What is your process for technical SEO audits?

How do you integrate SEO with broader marketing strategies?

Will you collaborate with my other agencies (e.g., web design or social media)?

What SEO tools do you use, and why?

Can you provide examples of previous work or case studies?

How often will you report on progress, and what metrics will you include?

What is your estimated timeline for seeing SEO results?

Do you require full access to my website for SEO work?

How do you handle communication with clients?

What’s your pricing model, and what does it include?

How do you stay updated with SEO trends and algorithm changes?

Do you work with any of my competitors?

Final Thoughts

Selecting the right SEO agency can make or break your online success. With so many digital marketing agencies to choose from—precisely 8,420 in the UK—it’s important to consider factors like industry experience, results, and communication style. This guide highlights the best SEO agencies for 2025, giving you a head start in finding the right partner for your business goals.

Whether you’re seeking an SEO agency near you or a global team, the agencies featured in our top 20 list are renowned for delivering tailored SEO solutions that drive measurable results.

Ready for some answers to these questions? Get in touch with the best SEO agency Reboot Online to see how we can make an impact on your business.

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