How the House of Lords considers a bill
The House of Lords takes a bill through the same named stages as the Commons, but under rules different enough that a bill’s hardest scrutiny often happens there. There are no programme motions to timetable debate, no selection of amendments, and amendments remain possible as late as third reading. The Lords rarely blocks a bill outright: its power is to revise, delay and force the Commons to think again.
No timetable, no selection
The Commons timetables government bills with programme motions; the Lords has no equivalent, and debate on each stage continues until peers have finished. Nor does anyone select amendments: in the Commons the chair chooses which amendments are debated, while in the Lords every amendment tabled may be spoken to. The House is largely self-regulating, with order kept by convention rather than by a Speaker with powers to enforce it.
The practical effect is that a well-organised group of peers cannot be procedurally squeezed out of debating an issue, which is why campaigns that lose every vote in the Commons often plan their real effort for the Lords.
The stages, and where they differ
Committee stage is usually taken by the whole House on the floor, or in Grand Committee off the floor, where no votes are taken and amendments pass only unopposed. Report stage is a genuine second round of revision, and because the whole House votes, it is where government defeats most often happen. Third reading, unlike in the Commons, still permits amendments, used to tidy the text and settle remaining uncertainties.
The conventions that limit the Lords
The Lords’ power operates inside well-understood limits. Under the Salisbury convention it does not reject at second reading a government bill delivering a manifesto commitment. The Commons can invoke financial privilege to set aside Lords amendments with spending implications. And behind everything sit the Parliament Acts, under which most Commons bills can ultimately become law without the Lords’ consent after a year’s delay.
Within those limits, the Lords’ amendments are the currency of the endgame: most bills leave the Lords changed, and the exchange of amendments between the Houses is where a contested bill’s final shape is settled.
Why this matters for tracking a bill
A bill that cleared the Commons comfortably has not necessarily cleared its real test. Watch the Lords marshalled list of amendments and the report stage divisions: they are the best early signal of what the government will eventually concede.
Related guides
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