The House of Commons and the House of Lords

The House of Commons is where British power actually sits. Its 650 members are elected from local constituencies, and whichever party commands a majority there forms the government. The Lords, by contrast, is filled through appointment, inheritance, and church office rather than election, with roughly 800 members including life peers, some hereditary peers, and senior bishops. A bill usually starts in the Commons: first reading introduces it, second reading debates its principles, committee stage picks apart its details, report stage allows further amendments, and third reading is a final vote. The bill then crosses to the Lords, which runs a similar process and can send amendments back to the Commons. Once both chambers agree on the text, the monarch grants royal assent, a formality that has not been refused in over three centuries.

The Lords' real job is scrutiny, not obstruction. It can suggest amendments, demand the Commons think again, and slow a bill down, drawing on members with deep expertise in law, medicine, or foreign affairs. But under the Parliament Acts of 1911 and 1949, the Lords cannot permanently veto most legislation. If the Commons passes the same bill again after a delay of about a year, it becomes law with or without the Lords' approval. This keeps the elected chamber supreme while still letting an unelected body catch mistakes and force second thoughts.

This matters most when you compare it to a government's Commons majority. A government with a thin majority feels Lords amendments as real pressure, since it cannot easily muster votes to overturn them. A government with a landslide majority can simply send a bill back to the Commons and steamroll past any objection, so the Lords' formal delaying power stays identical on paper but shrinks in practice.