After a few helpful previous recce's, I've now got the layout of Ms C's local Sainsbury's pretty much mastered, so it proved to be quite a speedy and successful mission this afternoon, helped by not needing to divert to any other nearby shop for extras. I wasn't hopeful that I'd find the extra long matches, nor the self raising flour, but both were thankfully easy to locate in the aisles and I was soon back at Ms C's front door with all her treasure in hand.