As an "ex-UAS" I have to mostly agree with Lucifer. I had a great time in the UAS and would recommend it to anyone willing to put allot into it- you will then get allot out of it. (btw, that’s what they look for when you go through the selection process).
But to give you the full range, we had some people who didn't get much more than 10hrs p.a. and one or two who got over 100hrs in total
So if you are keen on UAS/ RAF tell us more about your reasons why & we can tell you more.
For info, when I left, to get a PPL I had to do all the tests plus 4 hrs training including, wait for it,: 1 hr slow flying- as in the UAS you don’t bother with any and get straight into spinning & aeros
