Did a part time MSc as part of the job. As it was linked to the job, not a problem with time for the modules, but had to do the 'homework' in my own time.
Outcme may depend on whether or not the one pulling the purse strings sees it as professional development which the RAF will be able to gain from or an excuse to get get an MBA. IMHO there are to many who think the latter rather than the former.
sw