Just picking up something that Heliport said; the usual pay for a helicopter flying instructor is £40 per hour, but that is per flying hour. The time spent on pre and post flight briefings often comes to over an hour, for which we do not get paid. So the average lesson is usually 2 hours long, making it £20 per hour instructional time. Wasted lessons when the student does not even bother to show up (much less apologise for it), along with preparation time and admin mean that the daily rate is bobbing along at around the national minimum wage for a days work. Makes you wonder why we bother.