The same goes for
Crowthorne.
even on the A33 between Reading and Basingstoke there is a 'not spot'.
As for North Norfolk or the Lincolnshire flatlands? forget it. Semaphore would work better.
Even 2 miles from thre A1 near Peterborough is a big no-zone.
The 95% of population metric needs to be dropped.
95% of land mass is a more realistic target.