In British politics, parliamentary select committees can be appointed from the House of Commons, like the Foreign Affairs Select Committee; from the House of Lords, like the Delegated Powers and Regulatory Reform Committee; or as a drawn from both, such as the Joint Committee on Human Rights. Committees may exist as "sessional" committees – i.e. be near-permanent – or as "ad-hoc" committees with a specific deadline by which to complete their work, after which they cease to exist, such as the Lords Committee on Public Service and Demographic Change.