“Survivalism” isn’t something you hear about too much in the UK. The Americans have a vast expanse to lose yourself in. Where your stockpile of guns, tins and candles won’t be found.
When Capitalism fails and anarchy takes over (tomorrow maybe?), if you;re English you’d do better to hole up in Russia, or wildest British Columbia.
Why? Well, nowhere in the UK seems to be more than a brisk walk away from civilisation (used in the loosest possible sense for most provincial English towns!).
Not quite as remote as a Shetland Bod, but a good introduction to a remote area are the lodges at Cadair View (http://www.cadairviewlodge.co.uk/).
Family friendly, great for exploring, mountain biking, walking, or just being away from the rat race, “off grid”. Check out the photos on the website and give it a go!.