used to flyref your comment:
If you really want to fly for a living then leave out the instructor part and aim for a decent well paid job flying for airlines or corporate. It is a fact that there are many despondent flying instructors out there who would much rather be flying TP or Jet but cannot get out.
The airlines can get between £23,000 + £37,000 as Co pilot on a jet
You can make quite a reasonable salary as a CPL/IR instructor - Oxford pay up to £55,000 now and many of the other commercial schools are paying over £40,000 - you just have to put up with a couple of years of low pay before you get there, but isn't that the same in most jobs where you have a period of apprenticeship?
So for what I have noticed they both start off crap yet the FI pays more depending on what Ratings you have i.e IR/ME FI. Unless your an airline captain but thats a different matter and years of experience.