If you’re trying to pick an agency in 2026, you’re not choosing “an SEO partner” in the abstract. You’re choosing a team that can survive algorithm volatility, handle technical messes without drama, and still ship content and links that move revenue, not just rankings.
This list is built to help you make that decision faster.
You’ll get a quick “who’s best for what” view, then deeper profiles that focus on what you actually care about: what each agency is known for, what you’d realistically hire them to do, typical minimum spend signals, and what public reviews consistently praise or criticise.
Quick picks (Top 3)
- Best overall: Impression
- Best for SEO plus Digital PR: Blue Array SEO
- Best for “search everywhere” performance (SEO plus paid and AI-era discoverability): Found
Comparison table (Top 10)
| Rank | Agency | Best for | Client rating (public reviews) |
| 1 | Impression | High-growth brands that want SEO + performance marketing under one roof | 4.9/5 |
| 2 | Blue Array SEO | SEO strategy and Digital PR when you want senior expertise, not fluff | 5.0/5 |
| 3 | Found | Multi-platform search performance, including AI-era visibility | 4.8/5 |
| 4 | Soap Media | SEO with strong delivery ops (web, dev, and performance support) | 4.9/5 |
| 5 | Greenlight | Enterprise-grade SEO and paid media with big-budget requirements | 4.6/5 |
| 6 | Koozai | Mid-market SEO and content marketing with a smaller, specialist team | 4.8/5 |
| 7 | Digitaloft | Organic growth and Digital PR-led SEO programs | 4.5/5 |
| 8 | Add People | SMB-friendly SEO support with high-volume customer feedback | 4.5/5 |
| 9 | Absolute Digital Media | SEO plus paid media when you want an agency with strong Clutch feedback | 5.0/5 |
| 10 | FAT Media | Website builds plus SEO for smaller budgets, with limited review depth | 3.2/5 |
1. Impression
If you want a grown-up performance partner that treats SEO as part of a measurable growth system, you hire Impression. You’ll typically bring them in for technical SEO, content, and Digital PR, especially when you also need paid media or broader digital strategy.
Realistic caveat :
Their publicly stated minimums signal they’re a better fit for teams with meaningful budgets and internal buy-in.
Snapshot :
- Best for: Mid-market to enterprise brands that want integrated SEO plus performance marketing
- Known for: Experimentation-led SEO and broader performance work, positioned as measurable growth
- Popular services: Technical SEO, content strategy, Digital PR, PPC support, digital strategy, analytics
- Minimum spend/retainer bands: Public minimum project size $5,000+; retained monthly management fee starts at $5,000 (approx., per Clutch listing)
- Notable clients: AG1 (Athletic Greens UK), Caring.com, Harley Street Skin Clinic, and Spin Genie.
- Years in the industry: Founded 2012
- Client rating: 4.9/5
Summary of online reviews :
Clutch feedback leans heavily toward “high-quality work” and strong communication, with reviewers frequently describing the team as proactive and easy to collaborate with.Review snippets also point to flexibility around budgets and a focus on value rather than just deliverables. The main friction you should plan for is organisational: if you’re not ready to implement changes quickly, you may feel like you’re paying for momentum you can’t fully use.
2. Blue Array SEO
If you want senior-level SEO thinking with the delivery capability of an agency, Blue Array’s “consultancy plus agency” approach is built for you. You hire them for technical SEO, strategy, and Digital PR that’s designed to earn authority, not just links.
Realistic caveat :
Their strongest public review signals are positive but based on a smaller Clutch sample.
Snapshot :
- Best for: Teams that want a strategic SEO partner plus Digital PR execution
- Known for: “Consulgency” positioning, combining consultant attention with agency scale
- Popular services: Technical SEO, SEO audits, content strategy, Digital PR, link building, migration support
- Minimum spend/retainer bands: Min project size $1,000+; typical project sizes often land in $10,000 to $49,999 on Clutch (approx.)
- Notable clients: The Telegraph, RAC, Simply Business, and MoneySuperMarket.
- Years in the industry: Founded 2015
- Client rating: 5.0/5
Summary of online reviews :
Clutch reviewers describe Blue Array as thorough and professional, repeatedly framing them as genuine specialists rather than generalists. The consistent praise is about clear recommendations and methodical execution. Because the sample is smaller on Clutch, you’ll want to validate fit through your own discovery process, especially around speed, comms cadence, and who actually does the work day-to-day.
3. Found
If your SEO strategy needs to connect with paid performance and “search everywhere” realities, Found is built for that. You hire them for SEO, PPC, and broader discoverability programs that are designed to work across multiple searchable platforms.
Realistic caveat :
Their most visible rating signal is a smaller Google review count displayed on their site, so treat it as directional.
Snapshot :
- Best for: Brands that want SEO plus paid media and platform-spanning discoverability
- Known for: “Everysearch” positioning and an AI-first framing for modern search performance
- Popular services: SEO, AI SEO, technical SEO, ecommerce SEO, PPC, paid social, digital PR, analytics
- Minimum spend/retainer bands: Minimal budget $1,000 to $10,000 ; Clutch lists min project size $1,000+ (approx.)
- Notable clients: the Hoxton, Puma, Clermont Hotel Group, Toolstation, Secret Sales, Bonmarché
- Years in the industry: Founded 2005
- Client rating: 4.8/5
Summary of online reviews :
The sources used here don’t include a full third-party review transcript set for Found. What you can see is that they publicly surface an overall Google score and review count on their own site, which is useful as a quick credibility check, not a full evaluation. If you’re comparison-shopping, push hard on case studies, measurement approach, and how they split strategy vs execution across channels.
4. Soap Media
If you want SEO that’s supported by strong delivery across web, dev, and performance channels, Soap Media is a reliable pick. You hire them when you need an agency that can handle the build and the growth work without handoffs falling apart.
Realistic caveat :
Some reviews mention early timeline slippage on complex builds, so you’ll want clear milestones.
Snapshot :
- Best for: Businesses that need SEO plus web delivery and performance marketing support
- Known for: Strong project management and “full digital partner” delivery positioning
- Popular services: Technical SEO, content marketing, PPC, web design, web development, email marketing, social media
- Minimum spend/retainer bands: Min project size $1,000+; avg hourly rate $100 to $149
- Notable clients: Connexus Group of Companies, Gadre Infotech Pvt. Ltd., Matthew Marsden Furniture (Clutch network logos shown)
- Years in the industry: Founded 2005
- Client rating: 4.9/5
Summary of online reviews :
Clutch reviews consistently praise Soap Media’s communication, timeliness, and overall project management, which matters a lot when SEO depends on dev collaboration. The most common positives are “high-quality work” and a proactive, transparent approach. Where friction shows up, it’s usually about the realities of complex projects: some clients mention initial delays before processes stabilised.
5. Greenlight
If you’re shopping at enterprise budget levels and want a team that can combine SEO with serious paid performance and CRO, Greenlight fits. You hire them for multi-country programs where you need structured experimentation and channel coordination.
Realistic caveat :
Their published minimum budget and hourly rate put them out of reach for many SMEs.
Snapshot :
- Best for: Enterprise and international brands with large budgets and complex channel mixes
- Known for: Paid Search and Shopping, programmatic, and CRO-led performance work alongside broader digital marketing
- Popular services: SEO, paid search, shopping feeds, programmatic display, CRO, analytics, performance strategy
- Minimum spend/retainer bands: Minimal budget $50,000 & up; average hourly rate $300
- Notable clients: ghd, Dixons Carphone, Superdry, Furniture Village, eBay
- Years in the industry: Year founded 2001
- Client rating: 4.6/5
Summary of online reviews :
DesignRush surfaces Google review availability and an overall score, which gives you a quick sentiment read. The public positioning emphasises innovation and multi-market work, so reviewers who are happy tend to be the ones buying strategic performance support, not just a basic SEO retainer. If you’re budget-sensitive, the “minimum budget” signal is the real story here.
6. Koozai
If you want a specialist team that sits in the mid-market sweet spot, Koozai is a practical option. You hire them for SEO and content marketing programs where you want clear fundamentals, not trendy shortcuts.
Realistic caveat :
Their public profile indicates a smaller team size, so you should confirm senior involvement and bandwidth early.
Snapshot :
- Best for: Mid-market brands that want SEO plus content marketing support
- Known for: Long-running UK presence and steady delivery across SEO and content
- Popular services: Technical SEO, on-page SEO, content strategy, content production, SEO audits, digital strategy
- Minimum spend/retainer bands: Minimal budget $1,000 to $10,000; hourly rate “Inquire”
- Notable clients: Papa John’s, TUI, Cambridge University Press, and the V&A Museum.
- Years in the industry: Year founded 2006
- Client rating: 4.8/5
Summary of online reviews :
DesignRush indicates Koozai’s Google review score and count, which signals generally strong sentiment. The visible review excerpt highlights in-depth SEO knowledge and a tailored approach, which is usually what you want from a smaller specialist team. Because the review detail set isn’t fully expanded in the sources used here, recurring criticisms are not confirmed publicly.
7. Digitaloft
If you’re hiring for organic growth and you believe links and content still win when done properly, Digitaloft is built for that. You hire them for SEO plus Digital PR programs, especially when authority-building is a core constraint.
Realistic caveat :
Their Clutch profile shows no verified public rating, so you’ll lean more on case studies and references.
Snapshot :
- Best for: Brands prioritising organic growth through SEO, content, and Digital PR
- Known for: Organic growth focus and authority-led Digital PR positioning
- Popular services: Technical SEO, content strategy, Digital PR campaigns, product PR, on-page optimisation, organic growth strategy
- Minimum spend/retainer bands: Min project size $5,000+ ; ongoing retainers are not confirmed publicly
- Notable clients: OLBG, Utility Bidder, Harley Street Skin Clinic, Bill Plant Driving School, JD Outdoor
- Years in the industry: Founded 2014
- Client rating: 4.5/5
Summary of online reviews :
The sources used here include client testimonials on Digitaloft’s site, not third-party review platforms, so broader “online review” patterns are not confirmed publicly. The visible testimonials emphasise professionalism, output quality, and communication, which aligns with what you want in a Digital PR-led SEO partner. If you need external validation, you’ll want to request references or look for additional third-party review profiles beyond the sources provided.
8. Add People
If you want SEO support that’s built around serving a lot of small and growing businesses, Add People is one of the most visible options. You hire them for affordable SEO and PPC support when you need process and consistency more than bespoke strategy.
Realistic caveat :
High-volume review profiles usually include a wider spread of experiences, so expect some complaints alongside the praise.
Snapshot :
- Best for: SMEs that want structured SEO support with clear account management
- Known for: Scale and affordability positioning across SEO and paid channels
- Popular services: SEO, PPC, content marketing, conversion optimisation, product marketing, social media support
- Minimum spend/retainer bands: Min project size $1,000+; avg hourly rate $50 to $99
- Notable clients: Adobe, Microsoft, Amazon, and Google.
- Years in the industry: Founded 2002
- Client rating: 4.5/5
Summary of online reviews :
Trustpilot shows a large volume of feedback and an overall positive score, with many reviews praising individual account managers for responsiveness and clear communication. The review distribution also shows a meaningful minority of low ratings, which often happens when expectations, timelines, or commercial outcomes don’t match what a buyer imagined. If you’re considering Add People, you’ll do best by setting concrete KPIs and agreeing what “success” looks like before month one.
9. Absolute Digital Media
If you want an agency that blends SEO with paid media and broader marketing execution, Absolute Digital Media is a contender. You hire them for multi-channel growth work, especially when you need both SEO fundamentals and paid acquisition support.
Realistic caveat :
Trustpilot shows a much lower average score than Clutch, so it’s worth pressure-testing fit and process.
Snapshot :
- Best for: Businesses that want SEO plus PPC and broader marketing support
- Known for: Proactive execution and multi-channel digital marketing positioning
- Popular services: SEO, PPC, content marketing, social media, web design, web development
- Minimum spend/retainer bands: Min project size $1,000+; avg hourly rate $200 to $300
- Notable clients: Not confirmed publicly
- Years in the industry: Founded 2008
- Client rating: 5.0/5
Summary of online reviews :
On Clutch, the themes skew strongly positive: proactive behaviour, high-quality work, and solid communication show up repeatedly. Clutch also highlights at least one client concern around account manager consistency over time, which is exactly the kind of operational detail that can make or break long retainers. On Trustpilot, the overall average shown is notably lower, signalling that experiences may vary more widely depending on engagement type.
10. FAT Media
If you want a website build partner that also offers SEO and digital marketing, FAT Media is positioned as a full-service shop. You hire them when your SEO needs are closely tied to design, development, and launch work.
Realistic caveat :
Public review coverage is limited and mixed in the sources used, so you should rely on references and recent case studies.
Snapshot :
- Best for: Companies that need a new site plus SEO support, especially around launches
- Known for: High-end web design and development positioning alongside SEO and digital marketing
- Popular services: Web design, web development, technical SEO, on-page SEO, digital marketing strategy, campaign support
- Minimum spend/retainer bands: Min project size $1,000+; avg hourly rate $50 to $99
- Notable clients: Blackpool Pleasure Beach, Oxfam, Subaru UK, and Stagecoach.
- Years in the industry: Founded 2005
- Client rating: 3.2/5
Summary of online reviews :
Trustpilot shows a low review count and a mixed score, which makes it hard to treat the rating as fully representative. The Clutch profile in the sources used does not show verified reviews, so you don’t get a strong third-party theme set there either. If you’re considering FAT Media, treat discovery as your evidence-gathering phase: who leads strategy, what the SEO roadmap looks like post-launch, and how reporting is handled.
Methodology: how these agencies were ranked
This ranking is tuned to the UK market and how SEO is typically bought here, especially across London and other major hubs: you’re often balancing specialist depth (technical SEO, content, Digital PR) with delivery reliability and commercial accountability.
We used a weighted model:
- 35% Review credibility and sentiment (rating, recency signals where available, and whether feedback is detailed vs vague)
- 30% SEO capability signals (clear focus on SEO, technical depth, and evidence of authority-building like Digital PR)
- 20% Commercial fit indicators (public minimums, budget alignment, and whether the agency looks structured for your size of business)
- 15% Proven positioning and clarity (does the agency explain what it does and who it’s for in a way that matches real-world buying decisions)
The final order follows this model: agencies with strong third-party review signals and clear SEO delivery strengths rise to the top, while agencies with limited review visibility or inconsistent signals drop lower even if their positioning sounds strong.
One more reality check: public review data changes over time, sometimes quickly. That’s why you should treat ratings as a snapshot, then validate with current references, your own discovery calls, and a clear scope.
