“The second category is where the issue is whether the proposed course of action is a proper exercise of the trustees’ powers where there is no real doubt as to the nature of the trustees’ powers and the trustees have decided how they want to exercise them but, because the decision is particularly momentous, the trustees wish to obtain the blessing of the court for the action on which they have resolved and which is within their powers. Obvious examples of that, which are very familiar in the Chancery Division, are a decision by trustees to sell a family estate or to sell a controlling holding in a family company. In such circumstances there is no doubt at all as to what the trustees want to do but they think it prudent, and the court will give them their costs of doing so, to obtain the court’s blessing on a momentous decision. In a case like that, there is no question of surrender of discretion and indeed it is most unlikely that the court will be persuaded in the absence of special circumstances to accept the surrender of discretion on a question of that sort, where the trustees are prima facie in a much better position than the court to know what is in the best interests of the beneficiaries.”