Discussion about how well or badly paid the job is for the work involved - is completely missing the point; the pay is set by the market, and not wet behind the ears "aerosexuals" who would do it for free.
The fact is that captains go part time or quit altogether in huge numbers, and that is due in large part to the brick wall of tax (62%) when one goes above £100k (and partly of course, the frustrations, family disruption and deleterious health effects of the job). And due to fiscal drag and inflation, this is no longer a problem for just super rich hedgies (for trainers, even max pension may not be enough to drop below 62%). The country is simply creating a damaging shortage of experienced professionals with this punitive band of tax.