In 1918 Ireland was a part of the United Kingdom of Great Britain and Ireland and was represented in the British House of Commons by 105 MPs. From 1882, most Irish MPs were members of the Irish Parliamentary Party (IPP) who strove in several Home Rule Bills to achieve self-government for Ireland within the United Kingdom by constitutional means. This approach put the Government of Ireland Act 1914 on the statute book but its implementation was postponed with the outbreak of the World War I. In the meantime the more radical Sinn Féin party grew in strength.