Currys PLC (LSE:CURY) has promoted Fredrik Tønnesen, a former sales assistant and most recently the head of its Nordic business, to succeed Alex Baldock as group chief executive as the electricals retailer looks to build on a recent recovery in trading and profits. Tønnesen, 44, will take over on 3 August after rising through a series of senior management roles over more than two decades with the company.