Nothing in the Bill will affect the criminal law. No one will be prosecuted on the basis of secret evidence. However, there are plenty of cases—for instance, those involving MI5 or involving victims of certain types, such as vulnerable victims—in which it is proper to screen witnesses from public view, or otherwise protect them. The Bill, however, has nothing whatever to do with criminal cases.
The purpose of closed procedures is not just to ensure that no one can see what the agent looks like; there are some cases in which we cannot let people know what the agent was doing. The plaintiff may have been compromised as a result of terrorist or other activity, and he and his friends may be dying to know how they were caught. What were the British agents doing that put them on to it? They want to know who shopped them, and that will make things very difficult for a person who they come to suspect is the source of the material that is emerging. As I think everyone knows perfectly well, it is not possible to share that information with the parties in each and every case of this kind. However, while some people may consider it satisfactory to say “Well, in those cases the Government never defend themselves and we just pay millions of pounds”, I really do not think that we need tolerate that situation any longer.