31.6%
31.6% of the 31,156 scored census entries across 12 cohorts in the United Kingdom fail the test of whether their security lets AI search crawlers in (RCH-2). A further 4,652 refused the scanner and are not counted.
- Sites
- 9,851 of 31,156 scored sites
- Group
- United Kingdom, 12 cohorts pooled
- Distinct addresses
- 29,355 (a site on two rosters is two entries)
- Test
- RCH-2: Does your website let those crawlers in, or does your security turn them away?
- Edition
- Census Q4 2026, Index 12.1, computed 2026-11-06
- Caveat
- Public rosters, not a random sample of the web; a site on more than one roster counts once in each, and says nothing about sites outside the United Kingdom.
How to check
- The group and its sites: United Kingdom.
- How the census is run: methodology.
- The figures: summary.json or claims.json.
- Every published figure: all claims for the United Kingdom.
Link to this claim: https://readinessindex.io/census/2026-Q4/uk/claims/uk-rch2-fail
Cite as TEN7 Readiness Index Census 2026-Q4
Source reply: Source: TEN7 Readiness Index Census 2026-Q4 (Index 12.1). 12 published cohorts pooled: United Kingdom, n = 31,156. Public rosters, not a random sample of the web. Figures are CC BY 4.0. Data: https://readinessindex.io/census/2026-Q4/uk/claims/uk-rch2-fail