Top 10 UK B2B SaaS SEO Agencies in 2026: Pricing, Specialisations, Results

If you’re a B2B SaaS growth leader evaluating SEO agencies, you’ve probably noticed the gap between what gets promised and what actually moves the business forward. Traffic reports that don’t translate to demos, CAC efficiency, or budget justification in board reviews.

We’ve spent the last few years working with B2B SaaS teams at every stage, from Series A to enterprise. That experience, both running programs and evaluating agencies alongside leadership teams, gives us a clear view of which firms can actually deliver commercial outcomes.

This guide breaks down the top 10 UK agencies based on their ability to drive pipeline, pricing transparency, and track record for commercial results.

Case Study Snapshot:
For a UK-based AI PM platform, GrowUp shifted the company's focus from broad keyword coverage to buyer enablement.

Instead of producing incremental blog content, the team consolidated fragmented articles into authoritative clusters, introduced comparison and ROI-focused assets directly informed by common sales objections, and reframed homepage messaging to reflect concrete implementation outcomes.

Results achieved within six months:

• 178% increase in monthly demo sign-ups (23 → 64)
• 62% improvement in trial-to-paid conversion (12% → 19%)
• 38% reduction in customer acquisition cost
• Sales cycle reduced from 87 days to 64 days

🡪 Link to full case study.

Pros:

• Direct access to the founder (Muiz Thomas) and senior strategists, no "junior account manager" hand-offs.
• Shared P&L accountability; we care about your pipeline, not just rankings.
• Strong alignment between search, sales enablement, and GTM execution
• Deep expertise in AI search visibility (LLM optimisation).

Cons:

• Highly selective intake process, roughly 60% of inquiries turned down to ensure fit and defensible ROI outcomes.
• Not suitable for teams seeking high-volume, low-context content production
• Requires sales and marketing alignment to realise full value

When to Choose GrowUp:
You’re Series A to enterprise and you need SEO embedded in your entire go-to-market motion, with content that addresses sales objections, accelerates deal progression, and supports revenue targets.

Notable Results:
For Perkbox, Skale delivered 102% increase in non-brand SQLs, 40% growth in opportunities, and reduced cost per opp to just £110 through high-intent content strategy and targeted link building.

Pros:

• Proven results with major VC-backed SaaS brands
• Expertise in programmatic SEO and scaling content systems
• Strong AI search and GEO capabilities

Cons:

• Premium pricing (not ideal for bootstrapped or pre-Series A startups)
• May be over-resourced if you only need basic SEO guidance
• High client demand can lead to waitlists

When to Choose Skale:
You’ve raised Series A+ funding and need to prove SEO can be a primary acquisition channel. You’re expanding into new markets, launching new product lines, or need to scale content production at velocity.

Notable Results (Accelerate Legacy):
For Dialpad, Evolv delivered a +4130% increase in monthly non-brand traffic through targeted SEO strategies, and content production.

Pros:

• Inherits Accelerate’s decade-long track record with enterprise brands (Sage, Databricks, RingCentral)
• Leading-edge generative engine optimisation (GEO) capabilities
• Exceptional for complex site migrations and international SEO execution

Cons:

• Premium pricing (not suitable for early-stage startups)
• New brand identity (though team has decade of experience)
• Longer onboarding timelines due to enterprise complexity

When to Choose Evolv:
You’re enterprise-scale with hundreds or thousands of pages. You need technical precision, international SEO execution, and want to dominate not just Google but generative AI platforms where your buyers are increasingly searching.

Notable Results:
For TouchBistro, Powered By Search increased demo conversions by 324% in six months through coordinated paid and SEO campaigns.

Pros:

• Excellent for complex, committee-based enterprise buying cycles
• Strong forecasting and business case support for leadership approval

Cons:

• Higher entry point ($5K minimum) vs. consultative-only agencies
• Multi-channel model requires alignment across marketing functions
• US-based (though they serve UK clients remotely)

When to Choose Powered By Search:
You’re selling into enterprise with 6+ month sales cycles and committee-based buying. You need content that educates multiple stakeholders and you’re ready to coordinate SEO with paid and ABM for compounded impact.

Notable Results:
For AuthoredUp, Omnius delivered a 64% conversion boost on their new website plus 110% organic growth in just 6 months.

Pros:

• First‑mover expertise in GEO and LLM‑optimised SaaS growth
• Proprietary AtomicAGI platform tracking brand visibility in AI environments
• Exceptional results across SaaS, FinTech, and GenAI startups

Cons:

• Limited capacity due to boutique operating model
• Custom pricing and scope may deter smaller budgets
• Over‑sophisticated for brands seeking only traditional Google SEO

When to Choose Omnius:
You’re scaling an AI‑first or tech‑driven SaaS and need to dominate discovery across both search engines and generative platforms.

Notable Results:
For OneUp, SaaStorm’s SEO and content strategy supported £250K+ in inbound revenue plus 711% YoY growth in blog clicks.

Pros:

• Accessible entry pricing for SaaS startups (€4K+ vs £10K+ competitors)
• 10-day discovery phase ensures strategic foundation before execution begins
• Integrated SEO + content + ABM approach that supports both inbound and outbound teams

Cons:

• Smaller team means less capacity for enterprise-scale execution
• Requires internal sales alignment to maximise ABM integration benefits

When to Choose SaaStorm:
You’re a growth-stage SaaS company expanding in European markets. You need content that feeds both inbound SEO and outbound ABM motions. You value accessible pricing with a clear discovery process, and you’re ready to align marketing and sales around shared content assets.

Notable Results:
For Wildsparq, Breaking B2B achieved page one rankings for competitor alternative searches within 30 days, driving qualified leads actively comparing solutions and ready to convert.

Pros:

• Trusted by other top agencies including the #1 US LinkedIn Ads agency
• Responsive founder-led engagement with deep B2B SaaS domain expertise
• Flexible execution, full strategy or content‑only support for in‑house gaps

Cons:

• Content‑heavy model downplays deeper technical SEO needs
• Smaller team creates natural capacity limits for enterprise volume
• Best when sales team can capitalise on pre‑qualified inbound traffic

When to Choose Breaking B2B:
You’ve got product-market fit and a sales team that’s converting, but you need content that helps prospects self-educate and enter the funnel pre-qualified.

Notable Results:
For Crownpeak, Gripped generated £1.3M in new pipeline in one quarter from integrated Paid Search and Social campaigns, plus 108% YoY increase in sales opportunities.

Pros:

• Holistic growth engine combining SEO, paid media, and ABM
• SaaS-exclusive focus since 2017 with deep understanding of recurring revenue models
• Strong sales alignment with shared definitions, SLAs, and closed-loop pipeline reporting

Cons:

• Broader service scope means less pure SEO depth than specialist agencies
• Requires alignment across multiple marketing and sales functions to maximise value
• May be over-resourced if you only need standalone SEO without paid or ABM

When to Choose Gripped:
You want an agency that treats SEO as one lever in a coordinated growth system, and you’re ready to invest in full-funnel marketing that tracks to revenue.

Notable Results:
For Good Annotations, MADX secured 300+ high-quality backlinks in just 90 days through targeted digital PR and link building, driving 365,000 page views and 5,000 email signups.

Pros:

• Pure SaaS specialisation with no cross-vertical distractions
• Strong execution across technical SEO, content, and digital PR
• Clear service tiers with transparent scope and reporting

Cons:

• Limited capacity for very high-volume content operations
• Less suitable if you need paid media or broader GTM support

When to Choose MADX:
You value focus over breadth, want flexibility across execution or consulting, and need SEO that performs in both traditional and AI-driven search environments.

Notable Results:
For StockIQ, RevenueZen delivered a 500% increase in SEO-sourced inbound leads in just 7 months.

Pros:

• True revenue attribution connecting SEO directly to closed-won deals
• SME interview-led content process ensures technical accuracy and thought leadership depth
• Integrated services beyond SEO including LinkedIn ghostwriting and sales enablement support

Cons:

• Broader service scope means less pure SEO specialisation depth than focused agencies
• Onfolio acquisition may have shifted team structure or operational culture

When to Choose RevenueZen:
You’re under pressure to prove SEO drives revenue, not just awareness. You want clean attribution into your CRM, plus a content engine that pulls real expertise out of your team and turns it into pipeline.

Choosing an agency is a bit like choosing a co-founder. You’re going to be with them for at least 6-12 months. Here’s the framework I’d use as a CMO, VP Marketing, or Head of Growth evaluating these firms.

If you’re measuring success by keyword rankings alone, your metrics are outdated.

What modern SaaS SEO success actually looks like:

• Demos booked from organic (CRM-attributed)
• Content pages shortening sales cycles (validated by sales feedback)
• Lower blended CAC as organic scales
• MRR traceable to specific campaigns or assets

Ask agencies: “How will you connect this work to revenue?” If they pivot to “influenced pipeline” or “brand awareness,” push harder. You need closed-loop attribution or this becomes another budget line item you can’t defend.

You’ll be on weekly calls with this team for months. If the sales process feels generic, the partnership will be too.

Good signs:

• They ask hard questions about your ICP and sales process
• They challenge assumptions when something doesn’t add up
• They offer to audit your current strategy before proposing solutions
• Pricing and deliverables are transparent upfront

Warning signs:

• Guaranteed rankings or traffic numbers
• No mention of your CRM, sales team, or conversion data
• Senior strategists sell, junior AMs deliver
• Vague pricing that requires multiple discovery calls after you’ve shared goals

Gartner projects traditional search volume will decline by 25%+ by 2026 as users shift to ChatGPT, Perplexity, and AI Overviews. Your agency should have a clear perspective on this transition.

Ask: “How are you approaching optimisation for AI-driven search?” If they haven’t thought about it, they’re clearly not prepared for where search is headed.

UK SaaS SEO retainers in 2026 typically range £2,500–£20,000/month, with costs varying based on business size, market competition, and scope of work.

• Strategic consulting with selective execution
• Best for early-stage SaaS companies with internal marketing resources
• Typically includes: audits, keyword strategy, prioritised roadmaps, and 2-4 content pieces monthly

• Full-service SEO with content, technical work, and link building
• Ideal for Series A–B companies with proven product-market fit
• Typically includes: 4–6 content pieces/month, ongoing technical optimisation, backlink acquisition, and conversion tracking

• Comprehensive programs across multiple markets or product lines
• Typically includes: high-volume content production, advanced technical SEO, digital PR, AI search optimisation, CRM integration, and dedicated AMs
• Full partnership model with shared revenue KPIs

Recommended Reading: Hiring a SaaS SEO Company Vs. Keeping It in House

The hardest part of running SEO is defending the budget when results take time to materialise. The agencies in this guide understand that tension, they bridge the gap between execution and commercial proof.

If you’re still finalising your shortlist, explore our B2B SaaS SEO Partner Decision Framework. It outlines the evaluation process, cost models, and KPI structures that help teams like yours make SEO a dependable growth lever.

At GrowUp, our approach mirrors that same thinking: align search with revenue, measure what matters, and make every report defensible in the boardroom.