FF, Timex
First port of call should probably be your HR dept or line manager if directly employed, but until the details are worked out by NPAS of how many where and when, the HR bods in each force/contractor don't have much to go on. What we know is that the start date of 01/04/2012 will see at least one region formed and employed, so details from that will start to come through some time before then (not long).