Liz Truss will become the next Prime Minister after beating Rishi Sunak in the Tory leadership contest.Ms Truss, 47, triumphed over the former Chancellor following a gruelling two-month campaign. The Foreign Secretary won the backing of 81,326 Tory members, compared with 60,399 for Mr Sunak.In a speech after the announcement, Ms Truss promised a “bold plan” to cut taxes and grow the economy and “deliver on the energy crisis, dealing with people’s energy bills but also dealing with the long-term issues we have on energy supply”.She is expected to finalise her choices for the Cabinet and other ministerial roles before being formally appointed by the Queen at Balmoral on Tuesday.