Furthermore, the `cap` at level 30 would involve a change to conditions of service (i.e. the initial `PAS contract` that we signed up to - not to mention the significance of level 35 on the hugely important AFPS75 vs AFPS05 decision) and so `reserved rights` must surely apply otherwise legal challenges would have a very high chance of succeeding.
Apart from the fact that when you signed then you signed having noticed that you agreed to accept any changes to the conditions of service