Any ideas on how to research The Crown Court security without attracting the attention of the UK Security services?
You might just walk into a court and say to a security person, "Hi, I'm a novelist, and I would like to get some information about security in your courts. Can you help me?" The initial reaction probably will be confusion, but you probably will be referred to a higher-up. I don't know what the final result will be, but most people love to talk about what they do.
Ta!
It's Newcastle's Crown Court I'm using (very handy living in Stirling!) I'll see if I can pluck up the courage when I visit in a few weeks!