[Sticky] House of Lords
You thought it was over, didn't you?
Once you've cleared the Commons, the Lords wants a look. Most of the time the Lords will rubber stamp your Bill, but if it's controversial or unusual they may just have some friendly suggestions.
The Lords are the A Team, the Party Leaders, MPs with sufficient character experience, and the relevant Bill minister/lead (Lord Carter).
If a Bill is amended by the Lords, it will go back for approval by the Commons.