If I may refer to the PAOM "Should communication not be possible because of terrain factors, the pilot shall establish and maintain communication with the relevant police control room."
That is the point. The use of the control room of the relevant force for flight following seems to work. They have local geographical knowledge that could be vital in an emergency.
Why ask for a different/greater service? It does not give 20 min opps normal calls that one receives now, and does the "contract" with London Info, in the rural east, allow one to ask for such add services? I stand by to be educated.
I suppose that if it aint broke dont fix it is the mantra I am suggesting.