“As to costs, in the ordinary way one would expect the judge to penalise the dishonest and fraudulent claimant in costs. It is entirely appropriate in a case of this kind to order the claimant to pay the costs of any part of the process which have been caused by his fraud or dishonesty and moreover to do so by making orders for costs on an indemnity basis. Such cost orders may often be in substantial sums perhaps leaving the claimant out of pocket. It seems to the Court that the prospect of such orders is likely to be a real deterrent.”