‘ … The general provision in relation to cases in which allegations of fraud are made is that, if they proceed to trial and if the case fails, then in the ordinary course of events the claimants will be ordered to pay costs on an indemnity basis. Of course the court retains a complete discretion in the matter and there may well be factors which indicate that notwithstanding the failure of the claim in fraud indemnity costs are not appropriate, but the general approach of the court is to adopt the course that I have indicated. The underlying rationale of that approach is that the seriousness of allegations of fraud are such that where they fail they should be marked with an order for indemnity costs because, in effect, the defendant has no choice but to come to court to defend his position.’