Found a great online Irish shoe company that has posture correcting insoles for children in their shoes and 15% off all purchases over €20. http://www.shoeboxkids.ie/
After a very disappointing experience of mis-fitting and trouble exchanging with a well known shoe company, we decided to look elsewhere and so we got shoes for our 3, 7, 9 & 11 year olds from Shoe Box Kids and they are all really excellent.
I am going to get myself a pair of the Muflon canvas style runners too because my 9 year old is living in hers and reckons they are the most comfy shoes she has!
This is the link for them, they are like Converse but cheaper, with a thicker sole and IMO way more comfy!! http://www.shoeboxkids.ie/girls/model-43-651-red.html... (And 15% off, so a fab price as well!)