I was virtually born with an Ordnance Survey map in my hand and its a rare day when I don't find myself using one for something. In my opinion they are some of the best walking maps in the world and I'm generally reluctant to bother with anything else if an OS map is available. I bought this map and the matching one for the east section of the route whilst planning our Coast to Coast walk in 2009 because it not only marks the route (unlike the OS, as its not an official route) but fits it onto just two fairly compact maps. We walked east to west - a much better way to do it, but trickier to navigate as most of the signs only point the other way and guidebooks are all written west to east. I didn't expect to use it on the walk, but on the first day I set off with Wainwright's guide book, a modern guide book, the relevant OS maps and the Harvey's Coast to Coast East map. The next day the books stayed in our overnight baggage. I still took the OS maps with me, but they were buried in my rucksack in case I needed them. The map I found myself using every day was the Harvey's map. The size is nice and compact and the format easy to use. The detail is excellent and on the rare occasions when I pulled out the OS map to cross reference on a tricky to navigate section the Harvey's map actually seemed clearer. I won't be binning my OS maps yet, but Harvey's are a viable alternative and for the Coast to Coast undoubtedly the best maps for the walk.