The size you should watch, however. I usually wear throughout shoe size 45 and had accordingly appointed a UK 11. Where I would, however, can turn around, because they were much too big. The length of the insole is contained in the 11 to 28cm, measured, I have 29cm. The walking distance was uncomfortable too big, so they had an "unsafe" feeling while wearing. Return proceeded without problems, however.
I then ordered a UK 9, this size fits (for me at least) is very good, maybe a little bit too tight on the foot width her, but can be worn comfortably for several hours.