Which? | Expert testing, reviews and advice - Which?
AI Agentic Readiness
12 / 30
agentic checks passed 53% readiness - how well this site can be read, trusted and transacted with by AI agents
Last checked
which.co.uk is live and passes 12 of 30 agentic-readiness checks (53%). It runs on Apache over HTTPS.
For AI agents, which.co.uk's strongest signals are tidy, crawlable markup, fully indexable pages, a visually stable layout, and a clear canonical URL. Average 71% atomic sentences across 1 pages (target 40%+).
Its main gaps are text that is hard for agents to extract, a heavy page, few clear definitions, and no self-contained answer passages. An agent can read which.co.uk's content but has little machine-readable way to discover it - closing the AI discovery gap would be the fastest lift.
Agent interaction
~Semantic HTML5 & AccessibilityOnly 46% of images have alt text
✓Clean, Crawlable HTMLPage has title and meta description
✗Extraction Friction ScoreFew pages have voice-friendly lead paragraphs
✓Indexability & Snippet EligibilityPages are indexable and snippet-eligible - the precondition for Google AI features is met
✓Layout Stability & Responsiveness40/52 images lack explicit width/height - the most common cause of layout shift (CLS)
✓Canonical URL StrategySingle canonical tag present (no duplicates)
✗Page Speed: Page Size117KB of inline CSS/JS across the document
✗Speakable SchemaNo SpeakableSpecification schema found across homepage
AI discovery
✗llms.txt FileNo llms.txt file found at https://which.co.uk/llms.txt (connection failed)
~robots.txt for AI CrawlersNo explicit AI crawler rules in robots.txt
~Sitemap CompletenessNo lastmod dates in sitemap
✗RSS/Atom FeedHomepage does not link to an RSS/Atom feed in <head>
✗Internationalization SignalsNo hreflang alternate links found
✗Content Licensing & AI PermissionsNo ai.txt file found
Trust & transparency
✓Entity Authority & E-E-A-TSocial media / sameAs references found on homepage
✗Creator TransparencyCreator visibility is weak on content-like pages
✗Methodology TransparencyLittle content-production or review transparency is visible
~AI Assistance DisclosureNo AI-assistance disclosure found on sampled pages (neutral - the engine cannot tell whether AI was used)
~Visible Date Signal3 visible <time> element(s) with datetime attribute found across homepage
✓Title & Meta QualityTitles are present, unique, and well-sized, and pages carry meta descriptions
~Content Freshness SignalsNo JSON-LD date properties (datePublished/dateModified) found across homepage
✓Author & Expert SchemaVisible author byline or attribution found
Every check is a verifiable fact about which.co.uk's live pages. Scoring follows Google Lighthouse agentic-browsing: a fraction of concrete checks, not an invented 0-100.
How to improve for AI agents
The highest-impact changes to make which.co.uk more agent-ready, in priority order.
1 Add structured tables and lists high impactlow effort
Present which.co.uk's comparison and spec data as real HTML tables and lists agents can extract.
