I am happy with Dulwich Cobblers in Herne Hill - I have been using them for a number of years now, it is the shop close to the station in Railroad Rd. They have never turned down any request, do an efficient and professionally robust work with reasonable prices. Out of the area, useful I you go back and forth from Central London, for emergencies and urgencies I would recommend Le Premier Shoe Repair in Lower Marsh: I used them in a couple of occasions and they seemed really incomparable. Best wishes Maria Longo