53%

Last updated: March 2026

This page collects data on how UK businesses appear — or do not appear — in AI-powered search platforms like ChatGPT, Google Gemini, Perplexity and Claude. It combines proprietary research from Rank4AI's audit of hundreds of UK SME websites with curated third-party data from published sources. We update this page monthly as new data becomes available.

Our aim is to provide a factual, observational picture of where UK businesses stand on AI-readable signals. We report what we found. We do not claim that any individual signal guarantees improved AI visibility, and we note limitations throughout.

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TL;DR

• 53% of UK SME websites do not clearly state what the business does in their main heading
• 44% have no Organisation schema
• 52% have FAQ content on their homepage but no FAQ schema
• 87% have no llms.txt file
• Only 4% have Person schema
• Law firms were the only industry to score zero across every AI visibility signal

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How UK Business Websites Score on AI-Readable Signals

Homepage Clarity

Signal	Finding
No clear H1 stating what the business does	53%
No H1 tag at all	50%
No meta description	30%
Homepage carousel or slider present	77%
Mentions reviews without linking to a verifiable source	20%
2 or more confusion signals on homepage	87%
1 or zero confusion signals	13%

Structured Data and Schema Markup

Signal	Finding
No Organisation schema	44%
No Person schema (only 4% have it)	96%
FAQ content present but no FAQ schema	52%
No sameAs social profile links in schema	48%
All 3 basic trust pages present (About, Contact, Privacy)	36%

AI Crawler Access

Signal	Finding
Block at least one AI crawler in robots.txt	23%
Have an llms.txt file	13%
No llms.txt file	87%

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Industry Benchmarks

Industry	Sites	Clear H1	Org Schema	Reviews Linked	Privacy Policy	Any Schema
Accountancy	9	56%	78%	78%	89%	100%
Marketing Agency	4	100%	75%	50%	100%	100%
Plumber	3	67%	33%	33%	67%	100%
Personal Trainer	3	33%	67%	67%	67%	100%
Estate Agent	4	0%	25%	25%	75%	50%
Legal	3	0%	0%	0%	0%	0%
Dentist	2	100%	0%	50%	100%	100%
Restaurant	1	0%	0%	0%	0%	100%
Retail	1	0%	0%	0%	0%	0%

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AI Adoption and Usage Data

• ChatGPT has 300 million+ weekly active users globally (OpenAI, March 2025)
• 27% of US internet users now use AI chatbots for search-like queries (Pew Research Center, 2024)
• Google AI Overviews appear in an estimated 30-40% of searches (various industry analyses, 2025)
• AI referral traffic shows higher engagement — 4.4x higher engagement compared to average organic traffic (SparkToro/Datos)
• Perplexity reported 15 million+ monthly queries by early 2025

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AI Citation and Traffic Data

• Zero-click searches now account for approximately 65% of Google searches (SparkToro/Datos)
• Google organic traffic has declined for many content categories since AI Overviews launched
• AI platforms send relatively small but growing referral traffic
• Citation behaviour varies significantly between platforms
• Structured data may influence citation likelihood but not definitively proven

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What This Data Suggests

• Many UK SME websites may be sending unclear or incomplete signals to AI systems
• Whether clearer signals lead to better AI visibility is not yet proven, but reducing ambiguity is unlikely to hurt
• The gap between having content and making it machine-readable appears to be one of the most common issues
• Industry variation is wide — awareness rather than technical difficulty may be the primary barrier
• AI search is still early, and these signals may matter more over time

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Methodology

Sample: Hundreds of UK SME websites across nine industries.

Date: March 2026.

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Frequently Asked Questions

What percentage of UK websites have AI-readable structured data?

96% had some form of schema markup, but most was generic. Only 56% had Organisation schema, 12% had FAQ schema, and 4% had Person schema.

How many UK businesses appear in AI search results?

There is no published data on what percentage of UK businesses are cited by AI platforms.

Does schema markup help with AI visibility?

There is no definitive proof, but schema provides explicit machine-readable information that reduces ambiguity.

How many websites block AI crawlers?

23% of UK SME websites in our sample blocked at least one AI crawler.

What is llms.txt and how many sites have one?

llms.txt is a proposed standard file providing AI systems with a machine-readable summary. Only 13% adoption in our sample.

Does the H1 heading matter for AI?

The H1 is the primary heading and one of the first text signals AI systems process. 53% of sites had unclear or missing H1 tags.

What is the most common AI visibility issue for UK businesses?

The accumulation of multiple unclear signals. 87% of sites had two or more confusion patterns.

What is the difference between having schema and having useful schema?

96% had some schema but most was generic WebPage/WebSite. Only 56% had Organisation schema defining the business entity.

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This research was conducted by Rank4AI as part of our ongoing work understanding how UK businesses appear in AI-powered search platforms. Our findings are observational and should not be taken as guarantees of specific outcomes.

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