As a 10.5 E, I couldn't get either the UK 9.5 or 10 to work in the brogue shoe or boot. Just too big or too small. I probably would have been OK with the UK 10 boot, but at least with the pair I had, the area at the bottom of the tongue pinched my foot. Odd, considering it was extra-roomy in the toes.
The Henley oxford, on the other hand, worked fine in a UK 10. Nice shoe, it's a keeper for me. I suspect D widths may find it wide though.