The New Labour introduced a series of constitutional reforms since taking office in 1997. In contrast，the Coalition Government，which is faced with the challenges from within and without and，particulary from its internal divide，is more cautious in major constitutional reforms. The ongoing debates focus on parliamentary reform，devolution and the EU legislation. New legislations on fixed term parliament，the European Union and devolution have been adopted；however，no breakthrough is observed in the reform of first-past-the-post（FPTP）voting system，nor in the reform of the House of Lords. There has also been limited progress on the devolution of the power from Westminster to the people，which was manifested by major parties in the 2010 General Election. In addition，the debates about the Scottish independence referendum have profoundly impacted on the British constitutional system and the future of the United Kingdom.