If you live within the European Union, then you should be exempt
from import duty placed upon an order from the UK. If you are ordering
shoes from the UK - but live outside of the European Union - then
it will be difficult to say whether import duties will be imposed.
There is certainly a possibility that import duties could be imposed.
A good quality courier should contact you before the item is dispatched
to state whether any tax, import duty, surcharge is applicable to
your order. Your other option is to telephone or email your national
customs office to ask them directly.