The hunt for Shell’s next chief executive was under way, its chairman Jorma Ollila said yesterday, after current boss Peter Voser made what could be his last appearance at the oil group’s annual shareholder meeting. Voser announced his surprise decision three weeks ago to step down in the first half of 2014, before his 56th birthday, and less than five years into the role. Inside Shell, the current finance director, Simon Henry, is regarded as a potential front-runner, along with Marvin Odum, the company's head of upstream operations in the Americas. – Reuters