Fairly well-known locally is that my favourite bookshop, The Open Book in Richmond, stocks signed copies of all his books. They used to be signed directly on the page, but since he got to the mid-to-late nineties in age, tons of hardbacks are too much, so Helena wanders up there to get a load of bookplates signed these days.
Apart from that, I order all my books from them when I'm in London and a subsequent chat with Madeleine usually lasts ten times as long as the book shopping.
Anyway, I digress, yes, Sir David, amazing body of works and the books are wonderful.