Imagination puts itself up for sale amid Apple dispute

Shares in Hertfordshire chip designer surge 20% after it announces start of formal sale processShares in British chip designer Imagination Technologies rallied 20% after the company, which is in dispute with Apple, put itself up for sale.The Hertfordshire firm, which designs the graphics processors used in smartphones and other electronic devices, suffered a major blow this year when Apple, its largest customer, pulled the plug on its chip supply deal, with effect from 2019. Apple accounts for h