Another fine piece of work, Sapiento. I'm really getting into this alternate history map creation having looked at your posts. The thing I love about them is that they tell such a great story, particularly if you play with the place names. People who live in those countries (as evidenced by your Post Apocalyptic Amerika map) enjoy seeing what you've done to the bit in which they live.
Alternate history Britain is definitely on my 'to do' list. This actually looks more fun than fantasy for me.