No doubt the ex or current coppers on this thread believe the police rule the world but some of us do believe things like defence should have priority!
Is Astute the only sub the RN has? No.
Is the UK at a state of war requiring any and all vessels to be at sea to ensure the UK's safety? No.
Is the Astute even fully operational? No.
So, even if it were true that the sub had been temporarily removed from service while police investigations took place, what exactly are 'we' losing, other than more time to conduct trials?