hubbike said:The sustrans map itself is almost completely useless.
Not true.
I recently completed a 216 mile Sustrans route using nothing more than the Sustrans map and accompanying guide book. I would have needed 6 separate OS maps 1:50,000 maps to cover the full route so as far as I am concerned the Sustrans map represented good value.
And I have successfully navigate other long and short distance Sustrans routes using just their maps without any problem.