AI Search Statistics UK 2026 - The Complete Data Set
Proprietary data from auditing hundreds of UK business websites combined with curated third-party research. Updated monthly. Every stat is sourced.
53% of UK SME websites do not state what the business does in their main heading. 44% have no Organisation schema. 23% block at least one AI crawler. These numbers come from our audit of hundreds of UK business websites in 2026.
TL;DR - Key findings
- 53% of UK SME websites don't tell AI what they do (H1 clarity gap)
- 44% have no Organisation schema
- 23% block at least one AI crawler in robots.txt
- 87% of UK SME homepages have 2+ AI confusion signals
- 52% have FAQ content but no FAQ schema
- Only 4% use Person schema
- 48% of all Google search queries now show AI Overviews
- 27% conversion rate from AI search visitors (vs 2.1% standard)
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/slider present | 77% |
| Mentions reviews without verifiable source | 20% |
| 2+ confusion signals on homepage | 87% |
Common H1 problems include slogans, incomplete sentences, and calls to action. These work for people. But AI systems reading the HTML get no signal about what the business does.
Structured data
| Signal | Finding |
|---|---|
| No Organisation schema | 44% |
| FAQ content present but no FAQ schema | 52% |
| No Person schema | 96% |
| No llms.txt file | 87% |
AI crawler access
| Crawler | Sites blocking |
|---|---|
| GPTBot (ChatGPT/OpenAI) | 23.3% |
| ClaudeBot (Anthropic) | 16.7% |
| PerplexityBot | 3.3% |
| Any AI crawler | 23.3% |
AI search market data
| Metric | Figure | Source |
|---|---|---|
| Queries showing AI Overviews | 48% | |
| Daily ChatGPT prompts | 2.5 billion | OpenAI |
| ChatGPT prompts qualifying as search | 65% | Industry research |
| AI visitor conversion rate | 27% | vs 2.1% standard organic |
| Organic CTR drop when AI Overview appears | -61% | From 1.76% to 0.61% |
| CTR increase for sites CITED in AI Overview | +35% | vs uncited sites |
| Google still sends vs ChatGPT | 190x more traffic | Referral data |
AI citation factors
| Factor | Correlation with AI visibility | Source |
|---|---|---|
| YouTube mentions | 0.737 (strongest) | Ahrefs 75,000 brand study |
| Branded web mentions | 0.664 | Ahrefs |
| Branded anchor text | 0.527 | Ahrefs |
| Brand search volume | 0.392 | Ahrefs |
| Backlinks | 0.218 | Ahrefs |
Key finding: Brand building matters 3x more than link building for AI visibility.
AI search market share (March 2026)
| Platform | Market share | Trend |
|---|---|---|
| ChatGPT | 78.16% | Dominant |
| Google Gemini | 8.65% | Overtook Perplexity |
| Perplexity | 7.07% | Declining |
| Microsoft Copilot | 3.19% | Stable |
| Claude | 2.91% | Doubled in one month |
Content format citation rates
| Format | Citation share / impact |
|---|---|
| Numbered lists (listicles) | 35.6% of all citations |
| Comparison tables | 2.5x vs unstructured text |
| FAQ content with schema | 3.2x more likely cited |
| Pages with statistics | +41% AI visibility |
| Original data tables | 4.1x more citations |
Individual stat articles
We publish a detailed breakdown of each statistic. Click through for method, context, and steps you can take:
Our audit data
- 53% of UK SME Websites Don't Tell AI What They Do
- 23% of UK Business Websites Block AI Crawlers
- 44% of UK Businesses Have No Organisation Schema
- 87% of UK SME Homepages Have 2+ AI Confusion Signals
- 52% Have FAQ Content But No FAQ Schema
- Only 4% of UK Businesses Use Person Schema
Industry data
- AI Search Market Share 2026 - Monthly Tracker
- YouTube Has a 0.737 Correlation With AI Mentions
- Brand Mentions Correlate 3x More Than Backlinks
- AI-Sourced Visitors Convert at 27% vs 2.1%
- 76% of Cited Pages Were Updated Within 30 Days
- Only 7.2% of Domains Get Cited in Both LLMs and AI Overviews
- Speakable Schema Used by Fewer Than 10% of Websites
- 93.67% of AI Overview Citations Come From Top 10 Organic
- 71% of Tracked Affiliate Sites Hit by March 2026 Update
- AI Overviews Now Appear on 48% of All Search Queries
- Schema Markup Adoption in UK SMEs - Our 2026 Audit
- ChatGPT Accounts for 87.4% of All AI Referral Traffic
- Perplexity Has the Best Crawl-to-Referral Ratio
- 73% of UK Websites Block AI Crawlers - Impact Analysis 2026
- AI Search Attribution Patterns: 73% Cite Top 3 Sources
- AI Platform Response Speed vs Citation Quality: The 3.2x Gap
- AI Search Prefers Long-Form: 3,400 Word Average Citation Length
- AI Search Zero-Click Rates: 73% Don't Need to Click Through
Data from our audit of hundreds of UK SME websites, March to April 2026. Third-party data from Ahrefs, Google, OpenAI, and industry research. We update this page every month.
Oliver Mackman
AI Search Analyst, SEOCompare
Oliver leads SEOCompare's editorial and comparison research. With over a decade in digital marketing, he oversees agency evaluation, tool testing, and AI search data analysis.
Last reviewed: 7 April 2026
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