I recently made an order and the vendor's shipping method was Royal Mail recorded delivery. It came and the postman asked me to sign - I mentally panicked and did, not wanting to look suspicious. When I got it, it did say signature needed on it, but LE could easily have put that on. I wrote 'return to sender' on it but opened it a few hours after it got delivered, it all looks fine.
My questions - could that have been a controlled delivery? Am I not at any risk? Can I use my drugs? And does recorded delivery mean it needs a signature?
EDIT: Thanks for the responses everyone, in retrospect maybe I was being kinda paranoid but it was my first order so forgive me for my noob-ness!
It's perfectly normal to sign for a recorded delivery package. It happens with all Royal Mail tracked packages to my knowledge. It shows that the recipient has received the package and it puts their signature online in the tracking for the vendor to see.
You're fine.