Legislation Uk MCP server

legislation-uk

UK legislation from legislation.gov.uk — the official database of UK Acts and statutory instruments. Search for legislation, read its metadata, read the actual text of an Act or of one section in the version you choose (as amended, as enacted, or as it stood on a date), see what has amended it (or what it amends), and read the plain-language Explanatory Notes.

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Covers England, Wales, Scotland and Northern Ireland: ukpga (UK Public General Acts), uksi (UK Statutory Instruments), asp (Acts of the Scottish Parliament), anaw/asc (Wales), nia (Northern Ireland Acts), ukla (UK Local Acts).

Tools

Versions (the trap)

UK legislation exists in point-in-time versions that differ in substance, not cosmetics: the text as enacted and the text as amended at a date. Section 5 of the Data Protection Act 2018 refers to "the GDPR" as enacted and "the UK GDPR" as it stands today. The text tools take a version argument — "current" (default), "enacted", or a YYYY-MM-DD date — or the equivalent asat: "YYYY-MM-DD" alias, and every response states which version it served (versionvalid_from) and the date that version took effect. Repealed/omitted words appear as runs of dots, exactly as legislation.gov.uk renders them.

Section numbering also differs between versions: a section inserted by amendment does not exist in the enacted text, so a sectionnotfound for one version may still exist in another.

legislation.gov.uk serves the nearest EARLIER version silently when nothing changed on the exact date you asked for — the URL and Content-Location header both echo the date you requested even though the served text is older. The only place the real served date shows up is the document's own version metadata, which is why versionvalidfrom is on every response and a versionnote explains the gap whenever asat and versionvalidfrom differ.

Amendments are paged at 50, never the total

legislationamendments hits /changes/{affected|affecting}/{type}/{year}/{number}/data.feed, an Atom feed capped at 50 entries per page. The Data Protection Act 2018 alone has 2,271+ recorded effects across 46 pages — every response carries totalresults, totalpages, page, and nextpage so a caller never mistakes one page for the whole change history.

Shortened. The full README is on GitHub.