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The UK SEO market is thriving, with estimates suggesting it could reach an impressive £25 billion by 2028.
In such a competitive industry, finding the right SEO agency can make all the difference in boosting your online presence and driving business growth.
Having a trusted partner by your side helps your business stay ahead with strategies designed specifically for your goals.
In this article, we created a list of the 15 best SEO agencies in the UK to help you find the ideal fit.
Let’s get started!
15 Best SEO Agencies in the UK to Watch Closely in 2025
1. Omnius
Omnius is a B2B SaaS SEO and content marketing agency specializing in SaaS and Fintech companies.
With smart market research, personalized keyword strategies, and advanced tools, we help you enhance visibility, attract qualified leads, and achieve measurable results across global and local markets.
Key Services:
- Content Marketing – Our team crafts compelling content that connects with your audience, driving targeted traffic and fostering meaningful engagement.
- SEO Strategy – We use a data-driven approach to build your topical authority within six months, positioning your product as the top choice for your ideal customers.
- Data Analytics – By analyzing data from multiple sources, we uncover trends and transform raw information into actionable insights that highlight growth opportunities.
- Programmatic SEO – We generate large-scale, highly relevant web pages to fuel your growth by leveraging research, company data, and smart automation.
- Development & CRO – Omnius designs and optimizes pages with a focus on Conversion Rate Optimization (CRO), leveraging data-driven insights to maximize customer conversions.
Case Studies:
- See how we helped AuthoredUp achieve a 64% increase in conversions with strategic content and expert website development.
- Learn how we grew a SaaS tool's traffic from 0 to 2.73 million organic clicks in just 13 months.
- Discover how our targeted strategies helped Myos increase signups by an astounding 227.9% within six months.
- Explore how we boosted Hospitality ERP's organic traffic by 4x in only six months!
Pricing
Omnius pricing varies based on the type of services you need.
2. Cosmik Carrot
Cosmik Carrot is a professional web design agency based in Lichfield, specializing in creating tailored WordPress websites that help businesses showcase their expertise, attract ideal clients, and boost sales.
With over 16 years of experience and a client-focused approach, they provide comprehensive services, including web design, SEO, e-commerce solutions, and ongoing maintenance, empowering businesses to thrive online.
Key SEO Services:
- Unveiling traffic sources – Discovers and analyzes traffic origins to optimize your website for organic, social, and referral growth.
- Strategic SEO insights – Provides actionable technical SEO, optimized meta descriptions, and keyword strategies to help you elevate your content marketing.
- Site structure – Focuses on creating a seamless user experience by aligning your website’s structure with your audience’s needs.
- Navigating the web of backlinks – Strengthens your backlink profile to enhance referral traffic and website authority.
Pricing
Cosmik Carrot pricing varies based on the type of services you need.
3. Fast Digital
Fast Digital is a digital marketing agency specializing in various services, including social media management, SEO, branding, and app development.
The agency focuses on creating innovative, hands-on strategies to ensure mutual success and long-term client satisfaction.
Key SEO Services:
- Customized SEO solutions – Creates personalized strategies to address unique business objectives and market challenges.
- Transparent reporting – Provides clear insights into how SEO efforts translate into measurable online revenue growth.
- Comprehensive SEO audit – Conducts a thorough analysis to identify growth areas and set a strong foundation for optimization.
- Dynamic SEO tactics – Adapts strategies to stay ahead of Google’s updates, ensuring consistent brand visibility.
Pricing
Fast Digital pricing varies based on the type of services you need.
4. ClickPower™
ClickPower™ is an SEO agency specializing in transparent and straightforward strategies to boost website visibility and drive conversions.
The agency helps businesses achieve their digital marketing goals by offering tailored services such as Organic SEO, Google PPC campaigns, and advanced reporting.
Key SEO Services:
- Organic SEO – Provides a clear plan to optimize your website, improve visibility, and drive traffic and conversions.
- Google Ads – Creates targeted campaigns to quickly generate traffic and sales through an efficient bidding system.
- Local SEO optimization –Enhances local visibility using off-site strategies and tools like Google My Business for location-based searches.
- Advanced reporting – Uses cutting-edge software to track rankings, monitor trends, and compare your performance against competitors.
Pricing
ClickPower™ pricing varies based on the type of services you need.
5. POLARIS
POLARIS is a leading SEO agency based in Holborn, London, specializing in helping Ecommerce and B2B organizations boost website traffic and achieve higher organic market share through tailored SEO strategies.
With a data-driven approach and expertise in technical SEO, content marketing, and digital PR, the agency is recognized for its proven track of records and strategic excellence.
Key SEO Services:
- Targeted content creation – Crafts engaging content to align with your communication goals and drive user engagement.
- On-Page optimization – Optimizes critical landing pages, site structure, images, and anchor text to ensure seamless crawling and browsing experiences.
- Keyword research – Uses a 4-step process to identify search query variations and align keywords with user intent and buyer stages.
- Technical SEO health check – Conducts an 86-point audit to uncover and address technical issues, positioning your website ahead of competitors.
Pricing
POLARIS offers 3 Paid Plans starting at £3000 per month.
6. Believe.digital
Believe.digital is a digital marketing agency dedicated to helping ambitious small to medium-sized businesses.
With over 14 years of experience, a multilingual team, and a proven record of generating extra revenue, they provide tailored, high-quality solutions to drive fast, sustainable growth.
Key SEO Services:
- Strategic planning – Develops a tailored SEO plan by understanding your company, goals, and target market to support your objectives.
- Comprehensive analysis – Conducts in-depth competitor research, keyword analysis, and website audits to identify growth opportunities.
- Customized execution – Implements technical, on-page, and off-page SEO strategies tailored to your business and target audience.
- Continuous monitoring and optimization – Adjusts tactics based on data insights to ensure ongoing performance and competitiveness.
Pricing
Believe.digital pricing varies based on the type of services you need.
7. Semetrical
Semterical is a digital marketing agency based in central London specializing in helping businesses enhance their online visibility, drive organic traffic, and achieve measurable growth.
With tailored strategies and data-backed solutions, they focus on delivering long-term growth in search engine rankings and digital marketing performance.
Key SEO Services:
- Industry keyword research – Identifies niche keywords through a thorough analysis to understand user search behavior and intent.
- Technical SEO audits – Delivers a detailed roadmap with recommended fixes using bespoke tools and cutting-edge industry technology.
- Content strategy – Develops content plans based on in-depth audits to drive engagement and enhance SEO authority.
- Consolidated reporting – Provides comprehensive tracking and reporting aligned with your goals to measure ROI and performance effectively.
Pricing
Semetrical pricing varies based on the type of services you need.
8. Bulldog Digital Media
Bulldog Digital Media is a digital marketing agency specializing in SEO, content marketing, and digital PR, helping businesses increase their online visibility and drive sustainable growth.
With over a decade of experience, they offer tailored, transparent strategies and flexible solutions, serving clients from local startups to global brands.
Key SEO Services:
- Ecommerce SEO – Delivers strategies to drive organic traffic and achieve long-term growth for your online store.
- Content marketing – Creates tailored content plans to expand your brand's reach and target new audiences effectively.
- Technical SEO – Identifies and resolves technical website issues to ensure seamless optimization and performance.
- Amazon SEO – Optimizes product listings to enhance visibility and establish your brand as a top choice on Amazon.
Pricing
Bulldog Digital Media pricing varies based on the type of services you need.
9. Breakline
Breakline is an SEO agency specializing in delivering tailored, results-driven strategies that help businesses achieve sustainable online growth.
With over a decade of experience, the agency combines transparency, innovation, and ethical practices to create long-term client success.
Key SEO Services:
- Local SEO – Helps you dominate the local market by optimizing your online presence to attract community traffic and drive conversions.
- eCommerce SEO – Elevates online stores by optimizing product listings, enhancing navigation, and driving targeted traffic to boost sales.
- Content marketing – Focuses on creating and promoting high-quality content to establish your brand's voice and connect with your audience.
- Digital PR – Amplifies your brand’s message by securing media coverage and building relationships to enhance your online reputation.
Pricing
Breakline offers 2 Paid Plans, each featuring three programs to choose from.
The Essential SEO Plan starts at £99 per month.
The Advanced Plan starts at £999 per month.
10. Bird
Bird is a full-service digital marketing agency specializing in cutting-edge solutions across SEO, web design, creative, PPC, social media, and more.
With global reach and a customer-centric approach, they help businesses by delivering tailored strategies and measurable results.
Key SEO Services:
- SEO audits – Delivers comprehensive analysis, actionable recommendations, and progress tracking to refine your SEO efforts.
- Link building – Focuses on quality backlinks, relevance to your industry, and organic growth to ensure sustainable SEO results.
- SEO consultants – Provides expert guidance, develops personalized strategies, and ensures continuous support to achieve SEO goals.
- Mobile optimization – Optimises mobile user experience, improves search rankings, and ensures faster loading times on mobile devices.
Pricing
Bird pricing varies based on the type of services you need.
11. Devenup Agency
Devenup Agency is a full-cycle SEO services provider specializing in data-driven strategies to enhance web traffic, leads, and revenue across multiple platforms.
The agency offers tailored on-page and off-page SEO solutions, combining transparency, cost-efficiency, and expertise to deliver measurable business results worldwide.
Key SEO Services:
- Competitor analysis – Provides insights into your market and competitors to help you act effectively.
- Digital strategy – Collects all your channels into one actionable plan to maximize marketing effectiveness.
- Technical & internal SEO – Ensures proper indexation by fixing duplicate pages and setting up essential technical files like robots.txt.
- Content marketing – Creates high-quality, optimized content that appeals to both visitors and search engines.
Pricing
Devenup Agency pricing varies based on the type of services you need.
12. WebFX
WebFX is a digital marketing agency specializing in data-driven strategies to help businesses achieve measurable revenue growth.
With their technology and expertise, they offer services such as SEO, PPC, web design, and marketing analytics to help clients achieve their goals.
Key SEO Services:
- Content creation and optimization – Simplifies the process of producing and publishing professional SEO content to boost rankings, traffic, and conversions.
- Keyword research – Identifies high-value keywords based on your niche and competitors to craft a strategy that maximizes search visibility.
- SEO audits – Analyzes your website, data, and competitors to create a comprehensive and competitive SEO strategy.
- Link building – Develops custom strategies to attract high-quality backlinks that enhance your site’s rankings and visibility.
Pricing
WebFX pricing varies based on the type of services you need.
The average cost of WebFX services for SEO is between $1500 and $5000 per month.
13. SEO Discovery
SEO Discovery is a full-stack digital marketing agency specializing in generating leads and sales for startups and SMBs through customized digital marketing solutions.
They help clients achieve their goals by aligning marketing strategies with business objectives, leveraging data-driven insights, and utilizing cutting-edge tools to maximize ROI and drive sustainable growth.
Key SEO Services:
- SEO with data science – Combines AI and data science to collect, analyze, and interpret trends, delivering superior SEO results.
- Keyword analysis – Utilizes AI tools to identify competitor strengths and weaknesses, enabling the development of more effective strategies.
- Advanced reporting – Provides detailed, visually enhanced reports on key SEO metrics, helping you understand and improve website performance.
- Enhance user experience – Leverages tools like Hotjar and MouseFlow to analyze user behavior and optimize site navigation, reducing bounce rates and increasing traffic.
Pricing
SEO Discovery offers 3 Paid Plans starting at $250 per month.
14. SEO Sherpa
SEO Sherpa is an organic SEO agency dedicated to helping businesses grow by focusing on meaningful results like leads, sales, and ROI.
With expertise in technical SEO, content marketing, digital PR, and CRO, they deliver customized strategies to turn search traffic into lasting business success.
Key SEO Services:
- Technical SEO – Turns your website into a fast, accessible, and scalable revenue-driving machine, whether a small site or a massive platform.
- Link building – Delivers high-quality links through organic outreach to boost rankings, traffic, and brand recognition.
- Content marketing – Creates data-driven content, including writing, design, and video, to win links, improve rankings, and enhance visibility.
- Conversion rate optimization – Optimizes your funnel with high-impact, ROI-focused techniques to generate more leads and sales from your existing traffic.
Pricing
SEO Sherpa pricing varies based on the type of services you need.
15. Atomic Digital Marketing
Atomic Digital Marketing is a full-service digital marketing agency with expertise in web design, UX/UI design, SEO, PPC, and social media marketing.
The agency combines affordability, transparency, and a tailored approach to deliver exceptional business results worldwide.
Key SEO Services:
- Audit and research – Conducts a thorough technical SEO audit, keyword research, and competitor analysis to uncover opportunities and set benchmarks.
- Roadmap creation – Develops a clear action plan for technical improvements and ongoing optimizations to enhance site performance.
- On-page optimization – Optimizes meta tags, headers, and internal linking while improving content quality to meet user intent and SEO best practices.
- Content development – Creates fresh, SEO-optimized content and updates existing assets to align with target keywords and trends.
Pricing
Atomic Digital Marketing pricing varies based on the type of services you need.
To Wrap Things Up
Now that you know the best SEO agencies in the UK, all that’s left is to choose the perfect partner for your business.
With the right agency, you can enhance your online visibility, attract your target audience, and secure sustainable growth in one of the world’s most dynamic digital markets.
Take the time to evaluate their expertise, review their services, and connect with the ones that align with your business goals.
If you are looking for a reliable partner, Omnius is here to help.Book a free 30-minute call to discover how we can help you elevate your online presence with concrete SEO strategies!
