"Resources are concentrated where the threat is felt to be highest."
Do you have any evidence of this?
Mass surveilance has been a major part of British life for several decades, long before terrorism, or even serious street crime was an issue.
As an establishment view that the British people need to be watched, it goes back for well over a century.
A BRIEF HISTORY

You have totally failed to establish that there are any "terrorist hot sopts" (other than right-wing tabloid rhetoric) yet you are claiming a spohistcated approach to people-watching, where no such insight is apparent
"can be categorized as hi, lo, or zero."

When I asked, Nigel makes the point that we don't know what they are doing - it's protected under the Official Secrets Act"
How do you know - do you have somebody o he inside surveying the surveillers?
This really is make-it-up-as=you-go-along nonsense Iains
Jim Carroll