Man, your map is really a good one. I love it. But I want do 2 little complaints:
1st: I really cant saw the Isle of Wight... If its borders would be a bit darker, maybe it would be better visible. Now, we know its there, but we cant see it.
2nd: Isle of Man seems to be connected to Hadrian's Wall, not Cumberland. Maybe changing the route to Westmorland...
Thanks for the great map!!