I live in Glasgow, and since becoming aware that I might need to pack up some things and live 'wild' for a while, not having the resources for a proper re-location, I have been looking for a safe place within reasonable distance.
In terms of driving distance, shelter and isolation, I am looking particularly at the south facing slopes of Glen Lyon.
Certainly, central Scotland is the best place in the UK, given its vastness, lack of population, mountains, forests and wildlife.
Actually, I am just looking for an excuse to move there, it would beat Glasgow anyday.