From this you're over 28 then? How long would it take to become a TA Office, get experienced and then transfer to the Regular Int Corp?
If you aspire to be an office so much why have you left it so late if you don't mind me asking? Join as a normal person, if your Officer material then I'm sure you won't have a problem putting yourself forward for AOSB.
you may be a little too late! If i'm not mistaken the upper age limit for regular int corps soldiers is 29! Shame because i am currently serving as an int corps soldier and it is a fantastic career. You may still get in....you don't get if you don't ask!!! Otherwise the TA full time reservists is a good second option and i believe the corps is in need of as many quality soldiers it can get its grubby mits on so dont give up yet!