[The Census](https://readinessindex.io/census)

[Q4 2026](https://readinessindex.io/census/2026-Q4)

[United Kingdom](https://readinessindex.io/census/2026-Q4/uk)

[Published figures](https://readinessindex.io/census/2026-Q4/uk/claims)

uk-rch1-fail

Crawler access

3.4%

# 3.4% of the 31,156 scored census entries across 12 cohorts in the United Kingdom fail the test of whether robots.txt lets AI search crawlers in (RCH-1). A further 4,652 refused the scanner and are not counted.

Sites1,056 of 31,156 scored sites

Group[United Kingdom](https://readinessindex.io/census/2026-Q4/uk), 12 cohorts pooled

Distinct addresses29,355 (a site on two rosters is two entries)

Test[RCH-1](https://openstandard.readinessindex.io/tests/#rch-1): Can the AI tools that search the web read your site?

EditionCensus Q4 2026, Index 12.1, computed 2026-11-06

CaveatPublic 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](https://readinessindex.io/census/2026-Q4/uk).
- How the census is run: [methodology](https://readinessindex.io/census/methodology).
- The figures: [summary.json](https://readinessindex.io/census/2026-Q4/data/summary.json) or [claims.json](https://readinessindex.io/census/2026-Q4/uk/claims.json).
- Every published figure: [all claims for the United Kingdom](https://readinessindex.io/census/2026-Q4/uk/claims).

Link to this claim: [https://readinessindex.io/census/2026-Q4/uk/claims/uk-rch1-fail](https://readinessindex.io/census/2026-Q4/uk/claims/uk-rch1-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-rch1-fail