was afraid that you are/could be L E.  Since your from the UK, maybe, let me say L E means la w enforc ement.

If I get scared and think L E is contacting me, I certainly don't want to tip them off.   Sometimes even after screening and an appt is set, something gets said or a demeanor changes and I get spooked.  

If I feel like a dangerous individual is contacting me, I don't want to let him know that either.  

Either way, this is a livelihood for us and a hobby for you.  We have a lot of safety considerations that a hobbyist doesn't have.