Forget what the book says the PSO's at ADSC are still looking for you to be well under 11.30 for your run. You also Must pass all the strenght tests and complete the water jerry can carry for all jobs such as RA, REME, RE.
Just remember that as a REME tradesman you can get posted to any unit so your fitness will reflect on the unit your posted to. Once you have passed basic training you will definately have to be under 10.30 for your run and in lots of units under 10 minutes as a minimum. My LAD at present it frowned upon if your running over 9.30 on the runs.
Some of the other comments are quite close to the mark aswell.