"Do terrorists....operate in danger areas?"...erm no, but the people who protect us do.
Edit - Beerdrinker you have now got me worried, you said "...... AIS Narrow Route Brief at 1020Z today showed NIL VFR notams for the London FIR up to FL 050. So I assume the 3 DA's I plan to cross are cold - D026,031 and 036." These DAs like the others in the Channel and many, many more in the UK have scheduled, published hours of activity.
UK AIP ENR 5 - Navigation Warnings
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