Margaret Thatcher implemented policies.
Margaret Thatcher . As Prime Minister , she implemented policies that have come to be known as Thatcherism . On moving into , Thatcher introduced a series of political and economic initiatives intended to reverse high unemployment and Britain 's struggles in the wake of the Winter of Discontent and an ongoing recession . Her political philosophy and economic policies emphasised deregulation ( particularly of the financial sector ) , flexible labour markets , the privatisation of state-owned companies , and reducing the power and influence of trade unions .