Thread drift I know, but alas too many pilots ignore NOTAMed areas, and that today includes the drone test area south of Cambridge!
I'm not saying the drone NOTAM is but I think there is some responsibility on those that raise NOTAMs to make them sensible. EG one for Binham Norfolk currently 07/01/17 08:07Z to 07/04/17 18:42Z 1700ft 1.0m R for model flying. Clearly thay are not flying every day.