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 a clause makes
several amendments to the same section they are folded into one marked-up version; where a
section is amended by more than one clause, each clause's box highlights its own
changes, with related insertions made by earlier clauses shown as plain context (a note on
the box says so). 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. Bill versions compares the printed versions clause by clause.
Amendments tabled in Parliament
Every amendment tabled to the Bill is read from Parliament’s own record, checked every hour. Each one appears under the clause or Schedule it would change, with who tabled it, the explanation they published and, where it can be placed with certainty, its effect on the printed text. Latest shows what appeared each day and the outcomes as they are recorded; All amendments can be filtered by party, MP, kind and outcome. An amendment changes the Bill only if it is agreed.