About the Bill tracker

A new Bill amends existing law by instruction — “in section 17, after subsection (8) insert…”, “omit subsection (4)”, “for ‘X’ substitute ‘Y’”. Read on its own, a Bill tells you what is being changed but not what the law will actually say once the change lands. To find that out you normally have to dig out each amended Act and apply the edits in your head.

The Bill tracker does that for you. It shows the Bill clause by clause, and under each clause that amends an existing Act it shows the whole affected section as it would read once the clause's changes are applied — insertions underlined, deletions struck through. Where several amendments hit the same section they are folded into a single marked-up version. Alongside each clause is the relevant passage of the Explanatory Notes — the government's own plain-English account of what the clause does.

Where the text comes from

• The Bill and its Explanatory Notes come from the UK Parliament Bills API, which publishes each printed version as structured data.
• The text of the amended Acts comes from legislation.gov.uk, taken at a stated date. legislation.gov.uk's revised text can lag behind the very latest amendments, so each section shows the date its text was current “as at”, with a link to the source.

What it does not do

• It does not interpret the Bill, say whether a change is good or bad, or advise what to do. The marked-up text and the Explanatory Notes are reproduced mechanically and verbatim; there is no AI-written commentary.
• Amendments are applied by a deterministic process. Anything it cannot apply cleanly — renumbering, “in each place it occurs”, or changes that alter effect without changing words — is flagged for you to check, not guessed.
• It is an unofficial reading aid. It is not a Keeling Schedule endorsed by Parliament and carries no legal status. Always verify against the Bill and the legislation. Nothing here is legal advice.

As the Bill changes

Bills are amended as they pass through Parliament. The tracker is regenerated from each new printed version, so the picture stays current.

Attribution

Contains public sector information licensed under the Open Government Licence v3.0. Legislative text: © Crown copyright and database right; derived from content available from legislation.gov.uk. Bill text and Explanatory Notes: © Parliamentary copyright, reproduced under the Open Parliament Licence. Built by Free Movement.