I am guessing if it is not the TA it must be the RauxAF or the RNR?
Could be also the RMR of course.
You have an LL.B in Law and you are staying on for a fourth year in order to get an honours degree? Which University are you studying at?
Scottish universities only award ordinary degrees after three years. Honours degrees take four years.
Can I ask why you are not bothering to pursue a career in Law, as the benefits will be greater in the long run?
Just what are the benefits of being a lawyer?
FWIW the second straight-through SHAR pilot was a qualified barrister before he saw the light and joined the FAA. He went on to become a grand-fromage in the defence aviation sector.