Hi Side Slip,
The margins in operating aircraft for instruction are very low particularly in the UK. This means that there isn't a whole load of extra cash to pay the instructor without making the cost of flying training prohibitive. Even commercial instruction has low rewards. So if you want to be a career instructor and have a reasonable life style you will need to be rich to start off with, or have a partner prepared to support you. I cannot forsee this situation changing for the better, and in fact it is likely instructor pay will get less as aircraft running costs increase.
cheers
MJR
