ANY photos of GCHQ staff?
So you can get arrested for a birthday or wedding group photo with GCHQ staff in the background?
How far does this extend from GCHQ? Does this make all photography in the UK illegal, unless you ask all subjects, "are you employed by GCHQ?" first?
At least it should make it difficult for the police to take photos or videos of the protesters (who might just be staff waiting for a bus).