At no time in my service career did i ever get taught a civvy copper of fire chief gets saluted...!!!
They do not hold the Queens Commision, which even if you hate F/L Albert Pilot who wears it, you are saluting Lizz Two Stroke....
I for one never saluted anyone from the emergency services....
Only "civvy" I recall saluting was the Bertie Ahem....!!!!
I can imagine the SWO at any station pulling up a 4 ringer civvy aircraft capt and telling him he is incorrectly dressed as most civvy pilots i've seen dont wear hats anymore....that would be the clue to saluting them would it not...???