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UK Post Office Horizon — AI as Infallible Evidence — PAI incident record

Source evidence cited by public records. This page shows where the source is used, its trust tier, and when it was last checked in the seed.

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pai assessment
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2
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checked 29d ago

Records using this source

  • Fujitsu / Post Office Ltd

    entity | 1 Jan 1999 | 72%

    Fujitsu / Post Office Ltd — organisation named in the Production AI Institute incident registry.

  • UK Post Office Horizon — AI as Infallible Evidence

    event | 1 Jan 1999 | 80%

    The UK Post Office prosecuted over 700 subpostmasters for theft and fraud based on accounting discrepancies produced by the Horizon IT system — a system known internally to have software bugs. Subpostmasters were imprisoned and bankrupted. The Post Office suppressed evidence of Horizon's defects fo…

Source details

  • Type: pai

  • Tier: pai assessment

  • Publisher: Production AI Institute

  • Last checked: 3 July 2026

Public URL

https://www.productionai.institute/incidents/uk-post-office-horizon
Cite this record

"UK Post Office Horizon — AI as Infallible Evidence — PAI incident record." https://www.productionai.institute/graph/sources/src-19qucc0 (observed 2026-07-03; retrieved 2026-08-01). PAI.

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