“(1) The governing principle is that the court should first consider whether, if the claimant succeeds at the trial, they would be adequately compensated by damages for any loss caused by the refusal to grant an interlocutory injunction. If damages would be adequate remedy and the defendant would be in a financial position to pay them, no interlocutory injunction should normally be granted, however strong the claimant’s claim appeared to be at that stage. (2) If, on the other hand, damages would not be an adequate remedy, the court should then consider whether, if the injunction were granted, the defendant would be adequately compensated under the claimant’s undertaking as to damages. If damages in the measure recoverable under such an undertaking would be an adequate remedy and the claimant would be in a financial position to pay them, there would be no reason upon this ground to refuse an interlocutory injunction. (3) It is where there is doubt as to the adequacy of the respective remedies in damages that the question of balance of convenience arises…”