“Convention claims have very different objectives from civil actions. Where civil actions are designed essentially to compensate claimants for their losses, Convention claims are intended rather to uphold minimum human rights standards and to vindicate those rights… It is also why section 8(3) of the Act provides that no damages are to be awarded unless necessary for just satisfaction. It also seems to me to explain why a looser approach to causation is adopted under the Convention than in English tort law. Whereas the latter requires the claimant to establish on the balance of probabilities that, but for the defendant’s negligence, he would not have suffered his claimed loss – and so establish under Lord Bingham’s proposed liability principle that appropriate police action would probably have kept the victim safe - under the Convention it appears sufficient generally to establish merely that he lost a substantial chance of this.”