I was a size 7 when I started secondary school (11), an 8 in 2nd year and am now a 10, and have been for years.
I buy men shoes if I want 'black and flat' and trainers, and boots!
Evans is pretty good and has just started a "not wide" section - its where I have got most of my shoes since Saxone "Tall and Small" evaporated!
Big feet are a bit of a curse though. I do tend to live in my crocs (who do up to ladies size 11 so I love them!)
To a certian extent it runs in the family I think. My brother is a 12/13. Dd1 is 9 and a 4. Ds is 7 and a 2.
I am, though, the only woman I know with bigger feet than her dh!