Well, it was meant as a compliment. "Being Scottish and riding far from the roads, you must already be hard" But given how much offence 4 letters have given you, I now don't think you are hard.
In most of the UK, a service that can pick you up from any roadside is a pretty useful. If you are riding 12 miles from the nearest road, then you already know you are beyond vehicular help. Walking out is a risk you have presumably accepted. Are the paths well used? If not, have you left a message with someone about where you are going and when you expect to be back, so they can send out help if something has gone really badly wrong? And you'd probably welcome the ride home once you have walked the twelve miles back to bitumen. Would you have mobile signal 12 miles from the nearest road?
For you situation, maybe
http://www.findmespot.com/en would be more useful. It's actually interesting (what the 1YTT people used) as it uses satellites not GSM, so works anywhere in the world. Expensive (100€/year) and that only gives you tracking buttons to press in an emergency; the rescue cost is down to your friends and family or emergency services.
