Several of the biggest fund managers based in London are drawing up plans to move trillions of pounds of assets and thousands of jobs outside of Britain should the country vote to leave the EU in a referendum due by the end of 2017, the Sunday Times said.Prime Minister David Cameron's Conservatives won an unexpected majority in polls last month and are now seeking to renegotiate Britain's relationship with the 28-member bloc ahead of a plebiscite.The Sunday Times said that several major funds had said on condition of anonymity that they had set up committees to prepare for a possible move, with Luxembourg being one possible country to which they could relocate.