The answer of course is the airlines in the main fly SIDS STARS and Airways under a Flight Plan and under ATC control. No-one has an air display or a parachute jump or what used to be called a Purple Airway in class A so it's only us poor muppets who have to deal with it.
I can tell you that the Quality Manager at AIS has been monitoring this thread and as a result he got the Stokenchurch and Buxton NOTAM re-issued before I had passed anything on to him.
It may not always be apparant but they do notice.
Mike