I think police will be different to other emergency services, as they are qualified to direct traffic - and are directing you out of the way.
I know people jumping red lights for fire trucks etc has gone to court, and they've been done (bang out of order obviously) but never seen it for police, should think this is different.

If there's no where to pull over keep going, don't slow down - sometimes I toe it to find somewhere suitable.

Once in a lorry was following a woman with ambulance coming other way behind traffic - all we had to do was keep going then ambulance could overtake.
Woman did an emergency stop, and nearly needed the ambulance herself!
Stupid cunt.