tna-caselaw

name	tna-caselaw
description	Find Case Law — The National Archives' open service for UK court and tribunal judgments at caselaw.nationalarchives.gov.uk. Use when the question is about an approved judgment from the Supreme Court, Court of Appeal (Civil or Criminal), High Court (King's Bench / Chancery / Family / Administrative / Commercial / TCC), Upper Tribunal, Employment Appeal Tribunal, or a growing set of First-tier Tribunals. Distributed as LegalDocML (Akoma Ntoso) XML with Atom feeds and a public search. Pair with tna-legislation — judgments cite legislation; legislation Acts are interpreted by judgments.
license	Open Justice Licence (judgment text); OGL v3.0 (TNA wrapper); MIT (this skill's library)
metadata	{"facility":"tna-caselaw","cli-alias":"caselaw","base-url":"https://caselaw.nationalarchives.gov.uk","provenance":{"tier":3,"operator":"The National Archives (TNA) — Find Case Law service","service":"caselaw.nationalarchives.gov.uk","upstream-data":"Approved judgments from the senior courts and tribunals, published by the courts and rendered by TNA as Akoma Ntoso XML","citation-short":"via Find Case Law (TNA)","citation-formal":"Find Case Law, The National Archives, retrieved {date}, under the Open Justice Licence","confidence":"authoritative","confidence-notes":"Judgment text is the official approved version. Coverage is growing — older judgments are being added retrospectively; absence of a judgment from Find Case Law does not prove it isn't reportable."}}

Find Case Law (TNA)

Base URL: https://caselaw.nationalarchives.gov.uk. Distributed as Akoma Ntoso (LegalDocML) XML, the same standard legislation.gov.uk uses. Atom feeds for new judgments per court.

Court URL slugs

Slug	Court
uksc	Supreme Court of the United Kingdom
ewca/civ	Court of Appeal, Civil Division
ewca/crim	Court of Appeal, Criminal Division
ewhc/kb	High Court — King's Bench
ewhc/ch	High Court — Chancery
ewhc/fam	High Court — Family
ewhc/admin	High Court — Administrative
ewhc/comm	High Court — Commercial
ewhc/tcc	High Court — Technology and Construction
ukut/aac	Upper Tribunal — Administrative Appeals Chamber
ukut/iac	Upper Tribunal — Immigration & Asylum
ukut/lc	Upper Tribunal — Lands
ukut/tcc	Upper Tribunal — Tax & Chancery
ukeat	Employment Appeal Tribunal

CLI

parl caselaw atom
parl caselaw atom-court uksc
parl caselaw search --query "Online Safety Act" --court ewhc/admin --format atom
parl caselaw judgment ewhc/admin/2024/2042                # Akoma Ntoso XML (default)
parl caselaw judgment ewhc/admin/2024/2042 --format html
parl caselaw judgment ewhc/admin/2024/2042 --format pdf --out judgment.pdf
parl caselaw url ewhc/admin/2024/2042 --format xml        # URL only

Joins

• Judgments cite Acts / SIs via Akoma Ntoso <ref href> elements pointing at legislation.gov.uk URIs. Pair with tna-legislation.
• For procedural / political context around legislation cited, follow back to bills and hansard.

Provenance to cite

Tier 3 — third-party (TNA), authoritative within coverage.

• Inline cite: "(via Find Case Law, TNA)" — once per paragraph.
• For formal output: court + year + neutral citation (e.g. [2024] EWHC 2042 (Admin)) plus the TNA URL.
• Coverage is incomplete for older judgments — see the versionDate on each judgment's Akoma Ntoso <FRBRdate> for the publication date on Find Case Law. "Not in Find Case Law" ≠ "never reported".
• See ../../docs/provenance.md.