If my right hon. and learned Friend will forgive me, I have run out of injury time.
If a case involves sensitive information, the Secretary of State asks the judge’s permission to keep documents away from the court. The judge examines the evidence and makes a decision that balances national security with the interests of justice. Under the PII system, evidence can be shown in an edited form, and witnesses, whether spies or special forces or whoever, can speak from behind screens. Suspects can be given the gist of the case against them, and the court can sit in open session or in camera. All those operations are possible under the PII system, which has served British justice well for decades, not just against the current threat of terrorism, but against the Soviet threat, which in many ways was much more professional, and the previous Irish terrorist threat. The proof of the PII system is that no Government, including this one, can point to a single court judgment that has undermined national security—not one judgment.