status as stated: productionTransparency recordRecord linkage
The GOV.UK Algorithmic Transparency Recording Standard entry lists Ministry of Justice's Data First Splink at phase "production". The record says: Data First provides academic researchers with datasets across the Justice system (courts, prisons and probation) where individuals can be identified with a single, universal ID.
"Data First provides academic researchers with datasets across the Justice system (courts, prisons and probation) where individuals can be identified with a single, universal ID. Each dataset is deduplicated, giving a new ID for individuals within each domain, and then linked across domains to provide a cross-justice system linked ID. These IDs have been generated…"