Chelsea Green Cobbler at 31 Elystan Street.
He stocks regular Avel cream, and the Medaille D'or wax, cream, renovateur, etc. He has a pretty extensive selection of various brands of polish, cleaners, and brushes. Apparently the biggest selection of shoe care products in London.
My sis uses him for her shoe repairs and swears he is good but as a woman she is basically dumb when it comes to shoe repair.
Googled for address and came across his twitter if you're...