Society won't get the benefit of those cases where there is an injustice.
It can be useful in cases where there is some chance that a sentence will offend.
Legal aid should be reserved for cases where there is genuine need".
Among the most difficult questions are whether to use medicinal cannabis in extreme cases where there is insufficient existing evidence.
Kate Roberts, from Kalayaan, said: "We are obviously pleased in cases where there is justice for domestic workers..
"It has a potential to go beyond cases where there is obvious foul play involved," he said.
"What will happen is that society won't get the benefit of those cases where there is such an injustice.
What then of cases where there is reasonable disagreement as to whether a patient is alive or dead?
But things are different in cases where there is scope for a state to question its responsibility to repay.
"Cases where there is an execution date," he said with a sigh, "that's where I come in".
In France, the law says the shield can be circumvented in cases where there is "an overriding public interest".
