Strensall, Strenshall, Strensheeel - what do I know, I'm only a Padre!
4th of Foot - my commission came through last August when I was 43 and 3/4, so I'll be doing Strens... whatever it is and Sandhurst as a 44 year old. I really think it seems to depend on your speciality... though I'm really no expert on this.