"The order for a bespoke fact-finding hearing was surely to consign the determination of the mother's allegations into a separate compartment of the court's determination of the father's application for an order for contact. It went almost without saying, although the circuit judge chose to say it, that the optimum outcome of the contact application could be determined only by reference to the findings made at the fact-finding hearing; but the effect of the direction for a separate fact-finding hearing was that the costs incurred by the mother in relation to that hearing can confidently be seen to be wholly referable to her allegations against the father. There was, in that sense, a ring fence around that hearing and thus around the costs referable to it. Those costs did not relate to the paradigm situation to which the general proposition in favour of no order as to costs applies." 21. Wilson LJ went on to hold that the husband had not acted irrationally and that a proper exercise of the court's discretion did not depend upon why he chose to deny allegations that he must have known were true. He remarked that issues of fact arose in most disputed cases in relation to children and that his decision in the instant case should not be taken as an indication that it was appropriate to make an order for costs in the vast run of such cases. He held, however, that the mother's case fell into "a separate and unusual category"