Pimco Senior Advisor Rupert Harrison discusses the outlook for Chancellor of the Exchequer Rachel Reeves' budget and what she needs to do in order to remove the risk premia in gilt and currency markets. \\"She needs to deliver on the fiscal plan,\\" Harrison tells Bloomberg Television. \\"She needs to show that she has the political ability to raise taxes,\\" he adds. \\"More headroom. The market is expecting a minimum of £15 billion, ideally £20 billion.\\"