Actually, I think I would have to say that my favourite find while in London was "Etcetera", Sibella Court's incredibly inspirational book. This book is no where to be found in Canada and I had sort of given up on getting what may be considered a cult classic tome on living with vintage finds and personal collections. So it was serendipity when I saw it on the shelf of a bookstore that I was browsing in while in London. I was over the moon when I pulled it down from the bookshelf!
Sibella particularly speaks to the vintage loving former biologist/scientist in me.
But I think you would find it inspirational too!