I need a pair of boys black lace-up school shoes in a size 11 1/2 (Clarks sizing - recently measured)but can't find any in shops locally. Start-rite seem to start at a size 1, Clarks start lace-ups at size 3. Does anyone know anywhere that sells them? I live in Essex but would be willing to travel a reasonable distance e.g. London or nearby. I would prefer to be able to try them on my son before buying for obvious reasons! Many thanks