AI Regulation Tracker / Enforcement

High Court Rebukes Crown Prosecution Service Over Two Non-Existent Cases Linked to Generative AI

Regulatory summary: In two conjoined Romanian extradition appeals, Mr Justice Sweeting recorded that the CPS placed two fabricated authorities before the High Court, likely sourced from generative AI, and held the operative cause was human failure to verify. The CPS apologised and reviewed 78 other cases by the same lawyer.

Primary source

By Anthony Guerriero, Founder, The Leveraged Years · Reviewed by The Leveraged Years Editorial Desk · Published July 9, 2026 · Last updated July 9, 2026

High Court Rebukes Crown Prosecution Service Over Two Non-Existent Cases Linked to Generative AI regulation briefing

The Leveraged Years AI Regulation Tracker

Key takeaways

A second senior court has now recorded, in a reported judgment, that a public prosecuting authority placed AI-linked non-existent cases before the High Court. The court did not treat generative AI as an excuse. It located the operative cause in the human failure to verify, reinforcing that the duty to check authorities sits with the lawyer regardless of how a draft was produced.
Barristers, solicitors, and in-house advocates in England and Wales; prosecuting authorities and their counsel; litigation supervisors responsible for reviewing junior work; and any legal team that has adopted generative AI for research or drafting.
Status: Judgment handed down 8 July 2026 and reported from around 10 July 2026.
Put a citation-verification gate into your filing process now. For every authority in a draft, confirm the case exists, the citation is correct, and the case says what the draft claims, using an official law report or judgment database, and record who verified it.

Regulatory Briefing

Bindingness: Judgment of the High Court of England and Wales (Administrative Court). It is a decided case, binding as between the parties and available as persuasive authority on how courts treat fabricated AI-linked citations. It does not create a new statutory rule; it applies the existing professional duty of lawyers, as officers of the court, to verify the authorities they cite.
Scope: England and Wales. The immediate context is criminal extradition litigation conducted by the CPS Extradition Unit, but the reasoning about verification duties applies to any advocate or litigator who puts authorities before a court.
What Changed: A second senior court has now recorded, in a reported judgment, that a public prosecuting authority placed AI-linked non-existent cases before the High Court. The court did not treat generative AI as an excuse. It located the operative cause in the human failure to verify, reinforcing that the duty to check authorities sits with the lawyer regardless of how a draft was produced.
Who This Affects: Barristers, solicitors, and in-house advocates in England and Wales; prosecuting authorities and their counsel; litigation supervisors responsible for reviewing junior work; and any legal team that has adopted generative AI for research or drafting.
Current Status: Judgment handed down 8 July 2026 and reported from around 10 July 2026. Final as a first-instance decision; the underlying appeals were dismissed.
Effective Date: 8 July 2026 (date of judgment).
Primary Source: Tobosaru and Tofan v Court of Law Craiolva, Romania [2026] EWHC 1720 (Admin), National Archives Find Case Law, https://caselaw.nationalarchives.gov.uk/ewhc/admin/2026/1720
Secondary Analysis: Legal Futures, "CPS admits putting hallucinated cases before High Court"; Law360, "CPS Apologizes For AI-Generated Fake Cases Cited In Appeal"; LBC, "CPS caught citing non-existent cases after lawyer uses AI"; Lawyer Monthly.
Workflow Impact: Legal teams need a documented verification step between AI-assisted drafting and any filing. Every cited authority must be traced to the actual judgment on an authoritative database before it enters a pleading, skeleton, or submission. Supervisors need a checking routine for junior work that assumes citations may be fabricated.
Operational Next Step: Put a citation-verification gate into your filing process now. For every authority in a draft, confirm the case exists, the citation is correct, and the case says what the draft claims, using an official law report or judgment database, and record who verified it.
Last Verified: July 10, 2026

Date	Jurisdiction	Rule	Affected professionals	Status or effective date
2026-07-09	United Kingdom (England and Wales)	A second senior court has now recorded, in a reported judgment, that a public prosecuting authority placed AI-linked non-existent cases before the High Court. The court did not treat generative AI as an excuse. It located the operative cause in the human failure to verify, reinforcing that the duty to check authorities sits with the lawyer regardless of how a draft was produced.	Barristers, solicitors, and in-house advocates in England and Wales; prosecuting authorities and their counsel; litigation supervisors responsible for reviewing junior work; and any legal team that has adopted generative AI for research or drafting.	Judgment handed down 8 July 2026 and reported from around 10 July 2026. Final as a first-instance decision; the underlying appeals were dismissed.

Frequently Asked Questions

What is the citation and where can I read the judgment?

Tobosaru and Tofan v Court of Law Craiolva, Romania [2026] EWHC 1720 (Admin), handed down 8 July 2026 by Mr Justice Sweeting in the Administrative Court. It is published on the National Archives Find Case Law service at caselaw.nationalarchives.gov.uk/ewhc/admin/2026/1720.

Did the CPS blame the AI tool?

No. The CPS accepted the fabricated citations likely came from artificial intelligence, but told the court the operative cause was human error in failing to verify the authorities. The court agreed.

Were the extradition appeals affected?

No. The false citations were identified before the appeal hearing and removed. Both appeals were dismissed on their merits, and the fabricated authorities had no impact on the judgment.

What did the CPS do about the lawyer responsible?

It carried out a full internal review and had senior managers examine 78 other cases handled by the same lawyer. No similar problems were found, and the lawyer's work was otherwise assessed as being of a good standard.

Does this judgment create a new rule about AI in court?

No. It applies the existing duty of lawyers, as officers of the court, to verify the authorities they cite. It is a reported example of how a court treats AI-linked fabricated citations, not a new statute.