UK EU US
5 38 5.5
5.5 38.5 6
6 39 6.5
6.5 40 7
7 41 7.5
7.5 41.5 8
8 42 8.5
8.5 42.5 9
9 43 9.5
9.5 44 10
10 44.5 10.5
10.5 45 11
11 46 11.5
11.5 46.5 12
12 47 12.5