Regiment is 3m in 24 minutes although they set you at a 22 minute pace, also AFCO's are now telling people who are going to Regiment, the selection intake is being reduced to the amount of people applied for that trade, i think it was 14 of 48 (?) pass, although if you don't pass you will get a second chance, they recommended you try to max everything (such as 60 press ups in a minute, pull ups etc), that's what i heard on Thursday 4th June.#
Edit: You also need to do the 1.5m PJFT, as far as I'm aware.