Coconutty, whatever you might think of the title
the police radio system wouldn't be an obstacle just like it isn't now. Plenty of civilians use police comms and anyone that's got a CAP413 paperweight is perfectly able to use anything that's required of a 19 yo constable.
In any case, I can't see any difference to current operations with its mix of civilian and plod resources. It's the private funding model that the AA's / RNLI use that's interesting to me.
Just look at all them logos.
A combined service certainly has attractions. Might it attract the wrong sort of attention (especially when on the ground) if the same machine is used for both life saving and scrote nabbing?