I don't know much about the law in Great Britain, but in the US, our foundation law establishes that government's purpose, and therefore the end of the law, is to protect human rights. It follows, then, than if a person acts in harmony with a policy (or law) against another person and is found liable for damages to that person, the law did not protect the former, which means he had no right to do what he did, even though the policy asserted otherwise. We've seen such transgressions of human rights from the very beginning of our nation, when slavery was lawful. It was always immoral, but it was lawful. It seems, then, that we should always be on our guard, so that we do not allow immorality to get above us as it did then.