Apple CEO Tim Cook to step down in major Silicon Valley overhaul
Mr Cook will continue working for Apple as the company's chairman
Oil prices plunge over 10 per cent as Strait of Hormuz declared open
Brent crude dropped by around 10 per cent to roughly $89 per barrel
Retirement warning as millions urged to 'prepare for a world where state pension doesn't exist'
The Government is now spending more money on benefits than it gets from people paying income tax

















