how would you get around(navigate) once TSHTF?

[Binnie]

I've got OS landranger maps for my area, and the area's adjacent, and a compass.

I'm confident i could navigate my way cross country during daylight hours, night travel would be difficult though.

the only obstacles would be rivers, which in winter, when in spate, would be impossible to cross without using the bridges.

if i wanted to travel south of dundee, i'd have an issue as i'd need to go quite far inland to avoid crossing by bridge.