A first time shop for the very grateful Ms A, who I sensed was also surprised that I'd found her front door without too much trouble. After a quick discussion about which supermarket I should aim for to get what she needed (she kindly saved me a long walk in the pouring rain to the King's Road), and her checking that I had an umbrella with me, it proved to be a reasonably quick and easy treasure hunt and I was soon back at her now more familiar front door with a slightly damp shopping bag in hand.