If you’re looking for the best search engine optimisation company or trying to figure out which top SEO agencies in the UK are actually worth your time, this guide is for you. Updated for 2025 it gives a curated list of the best search engine optimisation agencies in the UK for you to explore further.
We’ve pulled together this shortlist of agencies known for getting real results, whether that’s boosting your rankings, increasing traffic, getting you seen in AI searches, or helping you convert more of the right visitors. No fluff, just useful insight into who’s doing SEO well in the UK.
What Makes a Good SEO Agency?
Before you dive into the list, it helps to know what to look for. The best SEO agencies typically offer:
- A clear strategy tailored to your goals
- Transparent reporting and communication
- Technical SEO expertise
- Support with content, links, and PR
- Insight into the latest industry trends (AI search for example)
- Results (not just rankings)
You should also consider things like whether you want a local SEO agency or one with national reach, and if they’ve worked with businesses like yours before.
Best SEO Agencies in the UK
| Position | Agency Name | Location | Specialisms |
|---|---|---|---|
| 1 | Koozai | UK-wide | Technical SEO, Content, Paid Media, Digital PR, Ecommerce, Blog Content, B2C, Construction, Hospitality, Healthcare and B2B |
| 2 | Front Door Communications | Cardiff | Traditional PR, Digital SEO, B2B, Tech |
| 3 | JDR Group | Derby | SEO, Content Marketing, Marketing Automation, CRM, Sales Funnels |
| 4 | Crowd | New York | SEO, Paid Media, International Campaigns |
| 5 | Alba SEO Services | Edinburgh | Local SEO, Content, Link-Building, Small Business |
| 6 | iCrossing UK | Brighton | SEO, Content, UX, Strategic Support |
| 7 | Boyd Digital | Glasgow | Technical SEO, Content, Outreach, Retail, Property, B2B |
| 8 | The SEO Works | Sheffield | SEO, PPC, Digital Marketing, Healthcare, Education, Ecommerce |
| 9 | Impression Digital | London | Technical SEO, Digital PR, Content Strategy, Data-Driven |
| 10 | Propeller | London | SEO, Design, Development, Hospitality, Luxury, Lifestyle |
| 11 | Found | London | Performance Marketing, SEO, Analytics, Creative, Development |
| 12 | Odyssey New Media | Birmingham | SEO, PPC, Web Development, Backlinks, Content Optimisation |
| 13 | Bird Marketing | Essex | Technical SEO, Digital Design, Creative Campaigns |
| 14 | Click Intelligence | Cheltenham | SEO, Content Marketing, Link Building, Outreach, Off-Page SEO |
| 15 | Re:signal | London | Ecommerce, Publishing, Strategy, Performance Tracking |
| 16 | Brave Bison | London | SEO, Performance Marketing, Media Capabilities |
1. Koozai
At Koozai, we’ve been helping businesses with search engine optimisation for almost 20 years. Whether you’re looking to appear on the first page of Google, be cited in AI searches, clean up your technical SEO, or just need help being found by the right people, we’re here for it.
We work with clients across a mix of industries, from hospitality, construction and finance to B2B and healthcare and always tailor what we do to match your goals. Need ecommerce SEO? We’ve got that. Looking for support with your blog content or local SEO? We can help there too.
And we’re proud to have won many industry awards and accolades. We focus on getting the right people to your site, improving your visibility, and making sure everything runs smoothly behind the scenes. We’ve also got specialists across content, paid media and digital PR, so your SEO strategy is never working in a silo.
If you want a best-rated SEO agency that takes the time to understand your business, we’d love to chat.
2. Front Door Communications
Cardiff-based Front Door Communications blends traditional PR and digital SEO to help brands improve visibility across both media and search. They’re especially well-suited for B2B and tech companies looking for integrated campaigns with consistent brand messaging across channels. A great option if you’re looking for a search engine optimisation agency that doesn’t treat SEO in isolation.
3. JDR Group
JDR Group, based in Derby, offers SEO, content marketing, and marketing automation services to SMEs. They’re HubSpot partners and focus on long-term growth strategies that tie SEO into wider business development goals. If you’re after a top-rated SEO agency that also understands sales funnels and CRM, they’re worth speaking to.
4. Crowd
Crowd is a global digital agency with UK roots. They deliver SEO, paid media and digital campaigns that span borders. If you’re targeting international markets and want a strategic SEO partner with creative capabilities, Crowd ticks those boxes.
5. Alba SEO Services
Based in Edinburgh, Alba SEO Services is a hands-on agency supporting small businesses with local SEO, content and link-building. They’re a go-to for businesses in Scotland looking to boost online visibility with a team that understands local markets and small business needs.
6. iCrossing UK
With offices in Brighton and London, iCrossing UK delivers performance-focused SEO for big brands. They offer full strategic support across SEO, content and UX. If you’re looking for a well-established agency with a track record of working with global names, they’re a strong choice.
7. Boyd Digital
Boyd Digital is a Glasgow-based SEO agency that combines technical expertise with content and outreach. They’ve worked with clients across retail, property and B2B sectors and are known for practical strategies that lead to long-term gains in search visibility. Great if you’re looking for a reliable SEO company in Scotland.
8. The SEO Works
Based in Sheffield, with offices in London and Manchester, The SEO Works delivers SEO, PPC and digital marketing for clients across healthcare, education and ecommerce. Their approach is research-led and tailored around clear KPIs.
9. Impression Digital
With offices in London and Nottingham, Impression is a data-driven agency offering a full suite of SEO services. From technical audits to digital PR and content strategy, they’re a great choice if you’re after a hands-on, analytical approach to growth.
10. Propeller
Propeller is a London-based agency that combines design and development with strong SEO services. They specialise in sectors like hospitality, luxury and lifestyle, making them a go-to if you want a well-rounded digital strategy that includes organic search.
11. Found
Found focuses on performance-led marketing with a strong SEO offering. Their team includes analysts, creatives and developers, and they’re known for clear reporting and proactive communication. If you’re looking for the best SEO company in London, they’re a solid pick.
12. Odyssey New Media
Based in Birmingham, Odyssey New Media helps SMEs and growing brands with SEO, PPC and web development. Their services cover everything from technical audits and backlink strategies to content optimisation, making them a good all-rounder in the UK SEO space.
13. Bird Marketing
Bird Marketing is known for its creative edge and results-focused campaigns. With offices in London and Essex, they’ve worked with both startups and established brands, offering a strong mix of technical SEO and digital design.
14. Click Intelligence
Cheltenham-based Click Intelligence offers SEO, content marketing and link building. If you’re looking for a search engine optimisation agency that puts a lot of focus on outreach and off-page SEO, they’re one to watch.
15. Re:signal
Re:signal works mainly with large brands, particularly in ecommerce and publishing. They’re known for clear strategy, regular performance tracking and strong industry insight. A great option if you’re looking for a top SEO agency that works at scale.
16. Brave Bison
Brave Bison is a digital media company that also offers SEO through its performance marketing services. They work with big names and focus on measurable growth. If you want a partner with broader media capabilities alongside SEO, they’re a good shout.
Whether you need the best SEO services in London, a top seo agency that specialises in hospitality, leisure, travel and tourism, support with technical fixes, or a long-term organic strategy, the agencies listed here are a strong place to start.
And if you’d like to speak with a team that really listens to what you’re trying to achieve?
Get in touch with us at Koozai, we’re here to help.
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