Point-in-time amendment history for UK law.
UK Legislation Changes API is a free Government API that requires no API key, is served over HTTPS and supports CORS, so it can be called from the browser.
Free API and MCP server for UK legislation amendment history. 506 provisions, keyless, OGL v3.0.
Details from uk-legal-changes.pages.dev.

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Yes. The UK Legislation Changes API is listed in the Government category of the public-apis directory, which only includes APIs that are free or have a free tier. Check its documentation for rate limits and paid plans.
No. The UK Legislation Changes API requires no authentication, so you can start making requests without signing up.
Yes. The UK Legislation Changes API supports CORS, so front-end JavaScript can call it directly.
Yes. The UK Legislation Changes API is served over HTTPS, so it's safe to use in production.