My Lords, I wish to add just a small point in support of what my noble and learned friend Lord Brown of Eaton-under-Heywood has said, and that is to stress the word “legitimacy” which he used in the course of his address. It is crucial that this particular system should not be open to
challenges in the court to any extent; one must try to the maximum to minimise the risk of challenges. This is a very difficult area, as shown by these cases to which the noble Lord, Lord Carlile, just referred. It is the interaction between Article 3 of the Convention on Human Rights, which deals with detention, and Article 8, which deals with respect for the family life of everyone. Where you get these human rights in play, it opens up the possibility of arguments being raised by way of challenge to orders of this kind.
The strength of the amendment which is being suggested is that it cuts back the open door—if I might put it this way—to challenges, and limits them in the most sensitive of all areas, which is the kind of relocation to which the noble and learned Lord has drawn attention. It is right that this is not a probing amendment. It is actually a very important point to try to secure these TPIMs in a way that makes them robust enough to stand up against possible challenges which, if the amendment was not made, would be very likely to come.