As a pp7 on the Triple, I take home £3.6-3.8k per month based on a full month's work (CAP) and max pension contributions, with no overtime. BALPA subs, etc. are still to come off that. As I said, on the Triple there's rarely any space on the lines for overtime. However, if we recruit enough new guys....
Assuming barnstormer is at pp10, he'll be senior enough to get credit efficient trips which will allow him time to do extra work.