well well well...stupid me. "valuable A level management tips" thanks for the roses - I just had to get it off my chest...sorry Phil.
Since I´m german (the sausage side of the fence...) and don´t know really what the needs in UK are (paywise) I´ll tell you what I think is okay for my place.
For a Captain I´d figure that I´d pay 500€ a month more "for the rating" and I´d up that by 200€ for every 500 hrs on the type. I´d cut that at 2500hrs top, so max "experience" would be 1000€.
Fo F/O´s, cut it by 40% and it should be okay too.
Hope that helps...