By Mark Kleinman Mark Kleinman is Sky News’ City Editor and is the man who gets the City talking in his weekly City A.M. column. This week he asks who might take the reins at BP, what next at Endeavour Mining, and a new retail platform BP’s board might legitimately be accused of many things in its handling of the departure of former chief executive Bernard Looney. Being slovenly over the pace of recruiting his successor isn’t one of them. It’s less than four months since Looney stepped down after acknowledging that he had been less than forthcoming over his personal relationships with colleagu…