My Lords, I very much support what has been said on this amendment and, indeed, the amendment itself, in particular because we want to avoid driving those human beings who will go on using drugs underground. One small point I want to mention, before I forget about it, is that the impact in Northern Ireland should be looked at, because I wonder what has been happening across the border. The report by Mark Easton yesterday, to which the noble Baroness, Lady Bakewell, referred, revealed the difficulty that the police have in proving that a substance has a psychoactive effect. That seems to me to be very much at the heart of this, with only four successful prosecutions in five years.
The expert panel talked about “robust” definitions and the Constitution Committee of your Lordships’ House reported, I think yesterday, on the need for certainty. The Joint Committee on Human Rights probably does not have its full membership yet, but no doubt it would have taken points on the importance of certainty in legislation—it did so for other legislation, particularly the recent anti-social behaviour Bill. The Constitution Committee said:
“The Bill inevitably exists in tension (at least to some extent) with the principle of legal certainty since its raison d’être is the regulation of activities in respect of substances that may not currently exist and whose nature and composition cannot readily be prescribed in advance with any accuracy”.
I thought that was very honest of it. However, it then went on to comment about not making,
“unacceptably broad inroads into the principle of legal certainty”.
We may come on to some of the detail of that on later amendments, but it seems to me to be very relevant to the point that the noble Baroness, Lady Meacher, has made with this amendment.
A proper, independent assessment would mean that we had advice that was not from those defending their own scheme, which can sometimes happen. I hope that we can hear sympathetically from the Minister on this, because I have absolutely no doubt that the noble Baroness will pursue this matter throughout the passage of the Bill and she will certainly have support from these Benches when—not if—she does that.