title_body: How do certified drone operators ensure they're not harassed by the police while filming from their drone? Lets say you get all your paperwork in good shape and have everything setup to film the city (or another scenic location) from a drone. How do you then ensure that the local police officers don't constantly come up to you and demand to see your paperwork, making it difficult to operate without interruptions?
  I can imagine this being somewhat doable if you have an assistant but what about solo drone operators? Do they call the non-emergency police line and ask an officer to stay with them onsite? Do they put the permits up on a plaque before initiating the flight?
upvoted_answer: Look the part - wear a high-visibilty jacket with a company logo, &quot;UAV Pilot&quot; or other markings that makes you look like a professional.
  Put up a sign which explains who you are and what you are doing - &quot;Drone Filming In Progress - please wait until aircraft is landed before approachng pilot. Operator: SuperDronePics Ltd, Permit number: OP-4ME33NK.&quot;
  Where possible, fly with an observer/helper who can intercept interested people (police, public, etc.)
  If you are flying somewhere particularly likely to attract attention, it may be worth contacting the local non-emergency number in advance. I don't expect they'll post an officer with you thoughout the flight, but it could help to cover phone calls from the public - and perhaps a police officer who radios in before approaching you.
  
  Finally, always have all your paperwork ready to show - if you are interrputed, it looks more professional to have a folder with your permits, insurance, etc. at hand. While police interest might become annoying (especially when repetitive!) you are almost always better off just answering their questions and being helpful.