“Further, it is important to identify the reasoning why the usual order on a summary judgment or strike out application is that the unsuccessful party should pay the costs. That is in part because of the regime withinCPR 44.2 (2). It is also because of a symmetry. In the event that the applicant is successful, the action comes to an end and the applicant generally recovers the costs of the action. So likewise, if the strategy does not pay off and the applicant loses, the applicant stands to bear the costs. It is a disincentive to interlocutory applications to know that this starting point exists and operates in practice. If it becomes watered down, then the impact of deterring or inhibiting interlocutory applications is reduced.”