Elected Members of Parliament sit in the House of Commons.
The House of Commons is the main and superior debating chamber of parliament. It is the centre of parliamentary power.
There are 659 MPs. They debate and vote on legislation (Bills) presented to the House by the government or individual members. They also study the work of the government through various committees.
Each week (Wednesdays), MPs question the Prime Minister on his policies and work.
The government can only remain in power if it has the support of the majority of the House of Commons.
All debates in Parliament are written down in a publication called Hansard. Proceedings are also available on radio and television.