As the second chamber of the Westminster parliament, the House of Lords has a central position in British politics. But it is far less well-studied and well understood than the House of Commons. This is in part because of constant expectations that it is about to be reformed - but most Lords reform plans fail, as the Coalition government's dramatically did in 2012. Meanwhile, following a landmark change in 1999 which removed most of its hereditary members, the Lords' role in thepolicy process has grown. Understanding the chamber is therefore now essential to understanding politics and parliame