The Houses of Parliament Parliament, Britain's legislature, is made up of the House of Commons , the House of Lords and the Queen in her constitutional role. They meet together only on occasions of symbolic importance such as the state opening of parliament, when the Commons are summoned by the Queen to the House of Lords. The agreement of all three elements is normally required for legislation, but that of the Queen is given as a matter of course to Bills sent to her.
Parliament can legislate for Britain as a whole, or for any part of the country.
It can also legislate for the Channel Islands and the Isle of Man, which are Crown dependencies and not part of Britain. They have local legislatures which make laws on the island affairs. As there are no legal restraints imposed by a written constitution, Parliament may legislate as it pleases, subject to Britain's obligations as a member of the European Union. It can even prolong its own life beyond the normal period without consulting the electorate. In practice, however, Parliament does not assert its supremacy in this way.