My feet are a size 9 / EU 43, although I can wear a 42.5 in some styles.
I have found an absolutely perfect pair of chunky Chelsea boots from Ugg and was delighted to see they have them in a 9, except of course it is a pseudo 9 and actually a EU 42.
Please can anyone with bigger feet tell me how Ugg sizing comes up? They are leather, not the sheepskin style.