, the bank warned that 'this all looks similar to 2008' when the collapse of US banking giant Lehman Brothers triggered the global financial crisis. Mr Roberts advised investors to switch their money out of risky assets such as shares and into the safety of bonds. The price plummet is due to a supply glut,

, the bank warned that 'this all looks similar to 2008' when the collapse of US banking giant Lehman Brothers triggered the global financial crisis. Mr Roberts advised investors to switch their money out of risky assets such as shares and into the safety of bonds. The price plummet is due to a supply glut,