In reply to Mr Fuller:
I use anquet maps and print off 1:50 k or 1:100k (memorymap is similar)
A4 is convenient sizewise and lasts pretty well
Just been on a tour in the hebrides and printed series of maps before we went without having to take a pile of os maps
On tours you can run the same software on a 7inch tablet ( the licence covers i think 5 devices ) which works well if you can charge it each day, you can get the whole of uk mapping in something the size of one os map which fits in a map case on barbag but not suitable for day rides, its will work on a smartphone and works without a signal but the screen isnt big enough for route planning
Paper doesnt run out of juice though!