Just to put things in to perspective a little, and to show exactly how NATS management (and their "bean counters", along with one particularly idiotic ex-RAF person) have let things deteriorate, and let the trainees down...........
On the old-style Cadetships, the "ab-initio" failure rate - that is to say those that finished the cadetship and were posted to a final unit - was ZERO !!!!!!!!!!!!