I call them quite frequently!

Loads of times for random obstacles on motorways (last time was a set of ladders in the outside lane of the A1)

Once because someone walked into a hotel while I was eating in the restaurant and said “I’ve just been stabbed, don’t call the police” to the receptionist; so I called them without him noticing. Think he was fine, just off his face on something.

Couple of times when I witnessed cars being broken into.

Once for an ambulance when someone got something stuck in their throat in a restaurant.

Most recent someone absolutely smashed out of his face struggling to stand up with the assistance of a lamppost; fell on his face twice while I was walking past.

Never been told my call was inappropriate.