Keep Britain close to EU, Cameron urges incoming PM May

By Kylie MacLellan and William James LONDON (Reuters) - Outgoing Prime Minister David Cameron urged his successor Theresa May on Wednesday to keep Britain close to the European Union, even as she embarks on the monumental task of ending four decades of membership. Cameron is stepping down after Britons rejected his entreaties and voted to leave the EU in a referendum last month, severely undermining European efforts to forge greater unity and creating economic uncertainty across the 28-nation bl