Thirty UK Cases of Hallucinated Citations, AI and Otherwise: A First Appearance in the Court of Appeal from A Family Case?

hallucinated citations

"...I return to the issue raised by the father’s representatives about the mother’s erroneous citation of authority (see in particular paragraph 54 above). I absolve the mother of any intention to mislead the court. Litigants in person are in a difficult position putting forward legal arguments. It is entirely understandable that they should resort to artificial intelligence for help. Used properly and responsibly, artificial intelligence can be of assistance to litigants and lawyers when preparing cases. But it is not an authoritative or infallible body of legal knowledge. There are a growing number of reports of “hallucinations” infecting legal arguments through the citation of cases for propositions for which they are not authority and, in some instances, the citation of cases that do not exist at all...."

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Artificial Intelligence in Housing/Property Proceedings and Beyond: Why the Master of the Rolls’ AI Speech Matters for All Practitioners.

Master of the Rolls AI speech

"AI offers opportunities to resolve complex rent and disrepair disputes far more quickly and economically than was possible in past times. We should embrace those opportunities and available new technologies in order to provide the access to justice that so many tenants and occupiers have long sought and have long found to have eluded them.”

Read MoreArtificial Intelligence in Housing/Property Proceedings and Beyond: Why the Master of the Rolls’ AI Speech Matters for All Practitioners.

ChatGPT as Evidence in the Family Court: Do the prompts reveal an attempt to fabricate allegations, or the searches of a victim trying to learn how to report abuse?

ChatGPT evidence in family law.

“It would then appear that on 18/5/25, on father’s case …, or perhaps even earlier in 2025 …, he formed the view that the mother was having an affair. He had access to her ChatGPT account, which I confess was new to me. This was explained to me as effectively analogous to one person having remote access to another person’s internet search history…”

Read MoreChatGPT as Evidence in the Family Court: Do the prompts reveal an attempt to fabricate allegations, or the searches of a victim trying to learn how to report abuse?

Another Four UK AI Hallucination cases (AI and non‑AI fabricated/false citations) (24 in total): November Shows How Quickly the Problem Is Escalating Internationally

Four UK AI Hallucination cases

“In considering the Respondent’s grounds of appeal, the tribunal noted that the Respondent relied on a number of cases. However, on close scrutiny, the tribunal was unable to find some of the cases that were referenced. Further the tribunal found that in a number of the cases quoted, incorrect references were used and in many of the cases the tribunal did not recognise the case summary provided...The tribunal is aware of the growing use of artificial intelligence and it would appear that an AI tool was used to prepare the Respondent’s grounds of appeal. This has resulted in the tribunal’s resources being disproportionately engaged in order to consider the cases relied on by the Respondent.”

Read MoreAnother Four UK AI Hallucination cases (AI and non‑AI fabricated/false citations) (24 in total): November Shows How Quickly the Problem Is Escalating Internationally

20th UK AI Hallucinations/Fabricated Citations Incident from the Employment Tribunal: Standards Remain Key, but Legal Qualification and Volunteer Input Matter

20th UK AI Hallucinations/Fabricated Citations

“…He is genuinely seeking to assist a claimant who would otherwise be unrepresented. Nonetheless, it is important that some basic checks are done to ensure that the material put before the Tribunal is accurate in order to avoid the above. I refer to R (on the application of Ayinde) v London Borough of Haringey [2025] EWHC 1383 which clearly identifies the risk of not undertaking such checks and the importance of doing so…” Employment Judge J Connolly

Read More20th UK AI Hallucinations/Fabricated Citations Incident from the Employment Tribunal: Standards Remain Key, but Legal Qualification and Volunteer Input Matter