I highly recommend Cece and me. Sam is lovely and definitely the best shoe fitter for little people in the area and has a great selection. She does various pop ups or you can make an appointment at her house or yours. https://www.ceceandme.co.uk/
Buy a foot measurer and go online from bobux, the best you will find, they have a measuring chart on their website. Trotters always sell u shoes that are small and grown out of instantly!