Description: In a London housing case, England's High Court found that a barrister cited five reportedly fictitious cases and ordered her and the Haringey Law Centre, a legal aid charity, to pay £4,000 in wasted costs. Opposing counsel alleged AI use. The barrister denied using generative AI. The Divisional Court identified AI use as one of two possible explanations for the citations.
Editor Notes: 08/28/2024: Grounds dated that day contained five fictitious case citations. 02/04/2025: The council's solicitor flagged the five citations and asked for copies. 04/03/2025: The High Court ordered £4,000 in wasted costs and directed that its judgment be sent to professional regulators. 06/06/2025: The Divisional Court left AI use unresolved, declined to initiate contempt proceedings, and referred the barrister to her regulator. 11/08/2026: The incident ID was created.
Entités
Voir toutes les entitésAlleged: Large language model developers developed an AI system deployed by Sarah Forey , Lawyers et Legal professionals, which harmed High Court of Justice (England and Wales) , London Borough of Haringey , Haringey Law Centre , Epistemic integrity , Judicial integrity , Courts et Parties to legal proceedings.
Systèmes d'IA présumés impliqués: Large language models et AI-assisted legal research systems
Statistiques d'incidents
ID
1813
Nombre de rapports
3
Date de l'incident
2025-06-06
Editeurs
Daniel Atherton
Rapports d'incidents
Chronologie du rapport
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Réponse post-incident de Andrew Ritchie
Mr Justice Ritchie:
1. In this case I have before me an application for relief from sanctions dated 7 March 2023. What it says is that the London Borough of Haringey asks the court to grant:
“d) Relief from sanctions so that we can partici…
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A High Court judge who discovered that lawyers presented five fake case citations in their submissions has ordered that his judgment be sent to professional regulators.
Mr Justice Ritchie said solicitors and barristers involved in Ayinde, R…
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Réponse post-incident de Victoria Sharp, Jeremy Johnson
AIID editor's note
This judgment has been abridged to fit the AIID's 50,000-character limit. It retains paragraphs 1–9 and 32–82, including the court's treatment of both cases and its further steps. It omits paragraphs 10–31 on professiona…
Variantes
Une "Variante" est un incident de l'IA similaire à un cas connu—il a les mêmes causes, les mêmes dommages et le même système intelligent. Plutôt que de l'énumérer séparément, nous l'incluons sous le premier incident signalé. Contrairement aux autres incidents, les variantes n'ont pas besoin d'avoir été signalées en dehors de la base de données des incidents. En savoir plus sur le document de recherche.
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