FTSE 100 Live: London blue-chips climb, AstraZeneca results, Flutter and S4 Capital shares tumble

A packed session of blue-chip updates has led to some big share price moves, with Flutter Entertainment and B&M European Value Retail the main casualties. Upgraded guidance from AstraZeneca and a profit beat by Auto Trader meant their shares were among the best performing. The overall picture for the FTSE 100 is less inspiring, with the focus still on oil prices after the slide in Brent Crude towards $80 a barrel.