{"version":1,"updated":"2026-10-28 08:31 UTC","meaning":"Coverage of current sponsor names by each evidence source; not a product accuracy score","register":{"source":"Home Office Register of Licensed Sponsors (Workers)","records":127826,"distinctEmployerNames":127549,"updated":"2026-10-28 08:31 UTC"},"companyIdentity":{"status":"measured","source":"Companies House Free Company Data Product","snapshot":"2026-10-01","updated":"2026-10-08 14:05 UTC","basis":"Distinct current sponsor names with a safely attached Companies House record","currentSponsorNames":127549,"safelyLinkedNames":104631,"safelyLinkedPercent":82.0,"ambiguousNamesWithheld":346,"namesWithoutSafeLink":22572,"note":"Coverage is not accuracy. No link and no warning are not an all-clear."},"historicalCos":{"status":"verified","reference":"FOI 2025 12841","source":"https://www.whatdotheyknow.com/request/request_for_certificate_of_spons_2","annexSource":"https://www.whatdotheyknow.com/request/request_for_certificate_of_spons_2/response/3258743/attach/4/FOI%202025%2012841%20J%20Reddy%20Annex.xlsx","responseSource":"https://www.whatdotheyknow.com/request/request_for_certificate_of_spons_2/response/3258743/attach/5/FOI%202025%2012841%20J%20Reddy%20Response.pdf","extracted":"2025-10-08","years":[2021,2022,2023,2024],"basis":"Exact case-sensitive employer name occurring once in the current sponsor register","currentSponsorNames":127549,"safelyLinkedNames":81694,"safelyLinkedPercent":64.0,"ambiguousNamesWithheld":199,"ambiguousCurrentRecords":426,"currentNamesWithoutHistory":45612,"historicalNamesNotCurrent":12890,"checksums":{"annexSha256":"701C04CA5ADDBF8683B397BBD5C31005BB6F5AB694CBB6468461E7C5725C41E4","responseSha256":"EF4F9AB4F804A18AC0160A0B5AC08A58C6DF7EE6109C6606F4FC45BEFF755A22"},"note":"Assignments under an exact published employer name; not workers, visa grants, occupations or current vacancies."},"cosUsage2025":{"status":"verified","reference":"FOI2026/03501","source":"https://www.whatdotheyknow.com/request/2025_cos_data","annexSource":"https://www.whatdotheyknow.com/request/2025_cos_data/response/3461406/attach/3/Annex%20B%20FOI2026%2003501.xlsx","responseSource":"https://www.whatdotheyknow.com/request/2025_cos_data/response/3461406/attach/4/FOI%20Response%202026%2003501.pdf","responseDate":"2026-06-26","year":2025,"disclosureThreshold":5,"basis":"Exact case-sensitive employer name occurring once in the current sponsor register","currentSponsorNames":127549,"safelyLinkedNames":8356,"safelyLinkedPercent":6.6,"ambiguousNamesWithheld":44,"ambiguousCurrentRecords":103,"currentNamesWithoutDisclosure":118950,"disclosedNamesNotCurrent":1125,"checksums":{"annexSha256":"9C140EFEB59002C06F1B1C4DBDF4E84F263ABA25E39BE172A3BE8BF343384FF2","responseSha256":"11EBA3564D4D9B9B25A1CF12DBCE82D57288047EE4C9F9691402AB857DF69EF9"},"note":"Published employer-route counts of five or more recorded as CoS used; absence is unknown, not zero."},"earlyWarningTrackRecord":{"status":"collecting","snapshots":2,"coverageDays":30,"from":"2026-09-01","to":"2026-10-01","requirements":{"snapshots":3,"coverageDays":60,"pairedObservations":20},"note":"No predictive track record is published until every requirement is met. Associations are never presented as safety scores."},"interpretation":["Coverage measures whether evidence can be attached without guessing; it does not prove every attached identity is correct.","Missing evidence means unknown, not safe, unsafe or inactive.","Historical CoS assignments do not confirm sponsorship for a current vacancy.","The 2025 used-status disclosure is separate from assignment history and omits counts below five."]}