Elden v HMRC
First-tier Tribunal · Jan 8, 2026
- Jurisdiction
- international
- Court
- First-tier Tribunal
- Record ID
- elden-v-hmrc-2026-01-08
- Observed outcome
- The strike-out application was refused, but the Tribunal issued a mandatory order requiring statements of truth regarding AI use and strict verification protocols for all future skeleton arguments.
- Known monetary consequence
- Not recorded
Why this matter warrants attention
The Tribunal ordered that any future skeleton argument must be accompanied by a statement of truth confirming whether AI was used, that the author has personally verified all facts and case summaries, and that all cited authorities are supported by direct quotations and full judgments.
Misrepresented: Case Law | Skeleton summarized Atlantic Electronics Ltd v HMRC [2012] UKUT 45 (TCC) as if it were a strike-out authority; Tribunal read the full 9-page decision and found the summary inaccurate and irrelevant (case concerned MTIC VAT and admission of additional evidence). || Misrepresented: Case Law | Skeleton presented Leeds City Council as if it were about denying a full hearing/strike-out; Tribunal read the 11-page decision and found the skeleton's summary misleading (case concerned costs and delay, not strike-out). || Misrepresented: Case Law | Skeleton misdated and mischaracterised Hok Ltd v HMRC (cited as 2011) and presented it as a strike-out authority; Tribunal found this inaccurate (case concerns PAYE penalties, not strike-out) and noted the misattribution. || Misrepresented: Case Law | Passages in the skeleton attributed to 'Hok' were in fact taken from Biguzzi v Rank Leisure plc [1999] 1 WLR 1926 (CA); Tribunal concluded case-heading/citation substitutions had occurred, producing materially misleading summaries.
Require sworn statements of truth about AI use in every tribunal filing; misattributed case headings are traceable.
Failure modes and consequences
- Misrepresented Authority
- Tax
- Trial
- None Adjudicated
- AI attribution
- Admitted
- Recorded tool
- Unidentified
- Known monetary consequence
- Not recorded
- Procedural posture
- First-tier Tribunal (Tax Chamber) hearing on an application by HMRC to strike out an appeal due to procedural non-compliance and the use of inaccurate AI-generated case summaries.
Damien Charlotin case archive
Publisher document archive. The recorded document is hosted in the upstream publisher archive.
Open underlying sourceA recorded source link is not a substitute for checking the underlying order, filing, opinion, or disciplinary record.
What this record does—and does not—establish
The representative confirmed AI was used but the specific tool was not named.
Retained unchanged after audit: the existing summary is source-specific, non-placeholder, and supported by the recorded source link. Read the underlying source before relying on it for legal advice or a filing.
Latest evidence review: Primary Document Verified (high confidence).
Controls suggested by the public record
- Verify each cited authority, quotation, and proposition against the underlying source before filing.
- Follow any applicable disclosure and attribution requirements for AI-assisted work.
- Retain a matter-level record of source checks and corrections.