In reply to Flinticus:
> Are boots, with an insole of 31cm, too big?
Yes, especially for me.
I know there should be some room at the heel but should I go down to a size 11?
Try a 10
Unfortunately no shop stocks these in Glasgow: I had to order them in at Cotswold Outdoors, so i can't just pop in and try. I have already gone down from a pair of UK 12 Horndl boots.
Do I need to go even more down?
If it's loose yes.
It seems odd as, in any other make, a size 11 would be too small for boots (fine for trainers).So much measurements, so little consistency!
Can't you wear them around the house to test them.
If you think they are too big, they probably are.
Ignore the numbers and use you senses.