UK  FR US
4 35 5
4.5 36 5.5
5 37 6
5.5 38 6.5
6 39 7
6.5 40 7.5
7.5 41 8.5
8 42 9
9 43 10
9.5 44 10.5
10.5 45 11.5
11 46 12