{"schemaVersion":"1.0","id":"how-old-is-that-rating","dataset":"hygiene-age","title":"How old is that rating","description":"The sticker in the window may be years out of date.","methodology":"How long ago each London premises was last inspected, as a share of all rated premises. A rating is a snapshot of one day and stays on display until the next inspection, so the age of the rating is part of what it means — a five in the window from four years ago is a weaker claim than a five from last month.","category":"environment","categoryLabel":"Environment","cadence":"monthly","placeholder":false,"landingPage":"https://londongraph.com/g/how-old-is-that-rating","markdown":"https://londongraph.com/g/how-old-is-that-rating/index.html.md","source":{"name":"Food Standards Agency","url":"https://ratings.food.gov.uk/","licence":"Open Government Licence v3.0","licenceUrl":"https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/"},"updatedAt":"2026-10-16T03:10:53.136Z","release":{"label":"Food hygiene register retrieved 2026-10-16","publishedAt":null,"resourceUrl":"https://api.ratings.food.gov.uk/Establishments","methodologyUrl":"https://ratings.food.gov.uk/open-data/en-GB","sha256":"54e9c3c17311a2cfb5354ffe47370c574036e21ce195a033b9b1bcaa06f9b5f9"},"observations":[{"series":"","buckets":["Within a year","1–2 years ago","2–3 years ago","3–5 years ago","Over 5 years ago"],"values":[45.15514547213335,33.1497879306496,12.194359699382394,6.129920380980728,3.3707865168539324],"unit":"% of dated numeric ratings","metadata":[{"metrics":{"premises":30342},"sampleSize":67195,"denominator":67195},{"metrics":{"premises":22275},"sampleSize":67195,"denominator":67195},{"metrics":{"premises":8194},"sampleSize":67195,"denominator":67195},{"metrics":{"premises":4119},"sampleSize":67195,"denominator":67195},{"metrics":{"premises":2265},"sampleSize":67195,"denominator":67195}]}],"areaStatistics":null,"visualizations":[{"id":"age-bands","label":"Rating age","description":"Compare dated numeric ratings by elapsed-time band.","url":"https://londongraph.com/g/how-old-is-that-rating","renderer":"primary","default":true,"timeControl":"inherit","datasets":[],"transform":null,"controls":null,"metrics":[],"caveat":null},{"id":"composition","label":"Age composition","description":"Show the same rating-age bands as an ordered 100% composition.","url":"https://londongraph.com/g/how-old-is-that-rating?view=composition","renderer":"composition-bars","default":false,"timeControl":"inherit","datasets":[],"transform":null,"controls":null,"metrics":[],"caveat":null},{"id":"borough-matrix","label":"Borough age profile","description":"Compare rating-age shares across boroughs using each borough's exact dated-rating denominator.","url":"https://londongraph.com/g/how-old-is-that-rating?view=borough-matrix","renderer":"matrix","default":false,"timeControl":"inherit","datasets":["hygiene-age-by-borough"],"transform":null,"controls":null,"metrics":[],"caveat":null}],"availability":"observations","note":"The release is complete for the measures represented on the graph page."}