Age and Training
Hello.
This probably won't be that helpful, but it may start the search you need for statistics.
Before I started the ATPL ground school, I Searched the web for statistics on ATPL training and ages.
There is a website that lists the UK licence holders: PPL, CPL etc. and the ages of pilots when the licence was issued.
f i remember rightly, i put 'ages of pilots', 'pilot training ages', or something like that into a search engine.
Most are about 28 - 32 ish. (please don't quote me on that).
Sorry I cannot be more specific and hope it helps.
JTK