Cleaning Shoes

My dad used to clean my shoes. Most weeks while I was living at home, at school it happened, and once even when I was again briefly living at home, aged 31. I would come down in the morning and there my clean shoes would be, sitting neatly and black-again on the doormat, or I'd see him in the evening out in the cold utility room brushing away. And that is one thing I praise my dad for, and love him for.

Now what kind of polish do I need to buy, anyone?!