S4 Capital: Sir Martin Sorrell’s ad giant loses its CFO Business S4 Capital, the ad giant run by Sir Martin Sorrell, is set to lose its chief financial officer Mary Basterfield. Basterfield has been CFO of S4 Capital since January 2022, having previously worked as CFO of Warner Music Group and UKTV, as well as group finance director of Just Eat. She has a twelve month [...]