Best Sanity CMS Agency in UK for AI SEO
There's no shortage of agencies in the UK that can build a Sanity website. The harder part is finding one that actually understands what happens after the site goes live, and how to turn a well-structured CMS into real search visibility.
Sanity gives teams a lot of control over content structure, and that's a genuine advantage for SEO when schema, metadata, and content models get planned properly from the start. But the CMS alone won't drive rankings on its own. With AI search platforms like ChatGPT, Perplexity, and Google's AI Overviews now shaping how people find businesses, the technical setup and content strategy need to actually work together, not sit in different departments.
Three agencies serving UK businesses were compared here, based on Sanity expertise, SEO capabilities, AI search experience, and whatever evidence exists of real client results. The point was to separate agencies that build great Sanity sites from the ones that can also turn those sites into an actual organic growth channel.
The three agencies are:
- Ehroo
- WeframeTech
- FocusReactive
How These Agencies Were Evaluated
The comparison focused on what each agency can actually deliver, not how prominently Sanity or SEO shows up on their homepage.
Sanity-specific experience, technical SEO capabilities, AI search and GEO services, published case studies, client reviews, and measurable results where they existed. The type of companies each agency typically works with mattered too, particularly SaaS and B2B businesses, since that changes what a good outcome even looks like.
A big part of this came down to separating development skill from search skill. Building a fast, technically sound Sanity website matters, but it's really just the starting point if organic growth is the actual goal.
So the real question became how well each agency connects the two. A strong Sanity foundation, a clear search strategy, and some proof that the work translates into visibility and results that matter to the business, not just a site that looks good and loads fast.
Top Sanity CMS Agencies in the UK for AI SEO
1. Ehroo
Ehroo is a global full-stack organic growth marketing agency that works exclusively with companies looking to grow through organic search, and Sanity is one of its core supported stacks alongside Strapi, Contentful, Directus, and Storyblok. That focus matters here because most agencies on this list treat SEO as an add-on to development. Ehroo works the other way around: it builds growth systems first, and the CMS work supports that.
The agency's approach covers AI SEO and AI Search Optimization (GEO and AEO) alongside traditional technical SEO, which means it's built for how buyers actually research software today, across Google, ChatGPT, Gemini, Perplexity, Reddit, and YouTube, not just search engines.
Why Ehroo Ranks #1
Ehroo takes a broader view of what SEO can do for a Sanity website.
The focus extends from technical foundations to building scalable organic acquisition systems across search engines and AI platforms.
That includes creating growth levers such as:
- Integration pages
- Comparison pages
- Programmatic SEO
- Templates
- Interactive tools
- Workflow libraries
- Product-led content
- High-intent landing pages
- AI search optimization
Ehroo uses Sanity CMS for its own website, giving the team first-hand exposure to the architecture it recommends to clients. This provides practical experience with how SEO decisions play out across the CMS, frontend, rendering layer, and content structure.
For global companies, that combination is particularly relevant since it demonstrates their ability to work from a modern headless architecture while building an organic growth strategy designed to compete in international search results and AI-generated answers.
Case Studies and Experiences
Published case studies back this up: a Forex CRM platform (AltimaCRM) ranked across Google, Reddit, ChatGPT, and Perplexity for high-intent keywords, a technology company built a strong sales pipeline without paid ads, and a manufacturing client saw the same system translate into steady annual pipeline growth.
Ehroo also brings direct experience with top-tier growth companies, including N8N, Supademo, and ClickUp, where it identified acquisition opportunities across migration pages, comparison pages, integration directories, and programmatic SEO systems. These formats work particularly well on Sanity, where a content model built once can power dozens of page types without rebuilding templates each time.
Engagements come with a stated accountability model, including a refund guarantee if targets are missed, and build timelines under two months, compared to the five to eight months most companies spend hiring and onboarding an internal team for the same scope of work.
Leadership
Ehroo is led by Drishti Kanoi, Founder & CMO, who is a Top Rated Fractional CMO on Upwork with 100% Job Success, reflecting a proven track record of delivering successful SEO, AI marketing, and organic growth outcomes for B2B SaaS companies.
Strengths:
- Deep experience across modern headless stacks, including Sanity, Contentful, Strapi, and Directus, so content modeling decisions are made with search in mind from the start
- Documented results across both traditional search and AI tools like ChatGPT and Perplexity, not just Google rankings
- A build and growth timeline built for speed, with engagements typically running under two months instead of the five to eight months most internal hires take to get moving
Best For:
- Enterprise and mid-market companies
- Companies with high-value sales cycles
- SaaS companies already using Sanity or another headless CMS
- Teams investing in AI search visibility
- Companies looking for organic pipeline rather than traffic alone
- Businesses that want SEO, engineering, content, and CRO connected
2. Weframe Tech
Weframe Tech has built a name for itself as a value-focused Sanity development shop, known for cost-effective, high-quality implementations for startups and growth-stage companies. It works with clients across the US, Canada, the UK, India, and the UAE, and its service pages emphasize scalable, SEO-friendly CMS builds. While its core strength is development, its Sanity work also covers the technical SEO, AEO, and GEO considerations that sit within a modern headless implementation.
The technical delivery side looks solid based on available reviews and client feedback on platforms like Clutch and Upwork. It's a strong option for companies where the primary requirement is technical implementation, migration, or optimization of a Sanity website while keeping SEO, performance, and content flexibility in the architecture.
Strengths:
- Sanity and headless CMS implementation
- Next.js, Astro, Nuxt, and other modern frontend frameworks
- Technical SEO, SSR, metadata, sitemaps, and structured data
- Performance and Core Web Vitals optimization
- Scalable website architecture
- CMS migration
- AEO & GEO Support
Best for:
- Companies that need a development-led Sanity partner to handle site architecture and implementation
- Teams prioritizing technical SEO and performance as part of the build, not a separate workstream
- Businesses wanting AEO and GEO fundamentals accounted for in the CMS setup from the start
3. FocusReactive
FocusReactive is a UK-based digital agency that specializes in headless technologies, modern web development, and composable digital experiences. It's built a strong reputation for helping businesses move away from traditional CMS platforms and adopt more flexible, scalable architectures suited for long-term growth.
Client reviews consistently highlight technical expertise, proactive communication, and a track record of solving complex implementation problems. Their focus spans multiple content management systems, frontend frameworks, and ecommerce integrations, which means Sanity is one part of a broader headless practice rather than the sole specialty.
They provide basic support for AI SEO or GEO practice. FocusReactive's strengths lie in architecture and technical delivery, not in published search ranking outcomes or AI citation results. For a technically sound Sanity build with strong project management behind it, this is a reliable option. For an active AI search strategy running alongside the build, that's worth clarifying upfront.
Strengths:
- Strong reputation for technical expertise and proactive communication across client reviews
- Broad experience across headless CMS platforms, frontend frameworks, and ecommerce integrations
Best for:
- UK businesses wanting a technically capable headless development partner
- Companies migrating from a traditional CMS to a composable architecture
- Teams needing strong project management on complex implementations, with AI search strategy handled separately
What Results Can You Actually Expect?
It depends on what the agency's being hired to do. A strong Sanity build gets better site performance, cleaner content structure, and a setup that scales without a rebuild every time something new gets added. But good development on its own doesn't guarantee anyone finds the site.
When SEO and AI search are part of the engagement from day one, the goal shifts past traditional Google rankings. Ehroo, for instance, also works toward getting cited in ChatGPT and Perplexity, which puts a brand in front of buyers who are searching in a completely different way than they were even a year ago.
A well-built Sanity site is the foundation. An ongoing SEO and AI search strategy is what actually turns that foundation into visibility, and eventually, into pipeline.
Sanity Agencies Compared
How to Make the Final Call
The right pick depends on what the project needs beyond the CMS itself.
If AI search visibility matters from day one, go with a team that builds it in from the start. Schema, entity structure, content modeling. All of that is far easier to get right during the build than to fix once the site's live.
For larger enterprise projects, look at how well the agency handles existing infrastructure, compliance, and internal sign-offs. Speed isn't the priority here. Knowing how to move through a slower, more layered process without dropping anything is.
A few questions worth asking before signing anything:
Who owns the search strategy after launch? Some agencies keep it in-house. Others hand it off to a separate vendor. Find out which one you're getting.
What actually gets reported back? Traffic and rankings are easy to track. Ask if they're also watching for citations in ChatGPT, Perplexity, and Google AI Overviews, since that's usually where the real gap shows up.
Does the contract allow room to adjust? AI search optimization is still evolving. A twelve-month retainer locked into one scope won't hold up well.
Summary
Weframe Tech and FocusReactive both bring real strengths to Sanity development, whether that's cost efficiency or technical delivery on complex migrations. Here's how to think about the choice:
Choose Weframe Tech if the priority is a well-built, cost-effective Sanity implementation with SEO fundamentals baked into the architecture.
Choose FocusReactive if strong project management and technical depth on a composable architecture migration matter most.
Choose Ehroo if the goal is turning Sanity into an actual growth channel, one built for AI search visibility from the start, with a documented track record across Google, Reddit, ChatGPT, and Perplexity that translates into pipeline, not just traffic.
If that last option sounds closer to what's needed, the Ehroo team is worth a conversation. Take a look at the case studies to see how it's played out for other companies, or reach out directly to talk through what a Sanity-driven growth strategy could look like.
