White men have become an “endangered species” at the top of British business, according to Tesco chairman John Allan. Speaking to a business conference, Mr Allan said: “For a thousand years men have got most of these jobs. The pendulum has swung very significantly the other way and will do for the foreseeable future. If you are a white male, tough. You are an endangered species and you are going to have to work twice as hard. If you are female and from an ethnic background and preferably both, then you are in an extremely propitious period,” he added.