NEW : Hague 's successor will be Philip Hammond , until now the UK defense secretary . David Cameron had served as UK foreign secretary for next year 's . Prime Minister David Cameron announced a major government reshuffle on next year 's . Hague will be leader of Cameron until Monday general election .
NEW : Hague 's successor will be Philip Hammond , until now the UK defense secretary . William Hague had served as UK foreign secretary for the past four years . Prime Minister David Cameron announced a major government reshuffle on Monday . Hague will be leader of the House of Commons until next year 's general election .