The Conservative Party, officially the Conservative and Unionist Party, is a centre-right political party in the United Kingdom that espouses the philosophies of conservatism and British unionism. As of 2013 it is the most powerful party in the United Kingdom, being the largest single party in the House of Commons with 303 MPs, the largest party in local government with 9,391 councillors, and the largest British party in the European Parliament with 25 MEPs.