By Charlie Conchie Chancellor Rachel Reeves has shaken up the mandate of two state-owned development banks today as part of efforts to divert billions of pounds of investment into high-growth British start-ups. In an announcement during the government’s International Investment Summit, Reeves said the UK Infrastructure Bank, set up by Boris Johnson’s government in 2020, will be transformed into the National Wealth Fund (NWF) in a bid to “catalyse tens of billions of pounds of private investment into the UK’s clean energy and growth industries”. The British Business Bank, founded during the coa…