Much Ado Books is a lovely independent bookshop in Alfriston, East Sussex, run by a very friendly and helpful couple from America. They sell both new and second hand books and have a great collection of books by and about the Bloomsbury Group.
I found several first edition Iris Murdoch's in there (I bought them all!) and they currently have a first edition copy of Virginia Woolf's Between the Acts; all reasonably priced. The decor is comforting, bookish, homeliness and the shelves have been decorated with patterns inspired by the work of the Bloomsbury artists, Duncan Grant and Vanessa Bell.
Alfriston is a quaint Sussex village nestled in the South Downs and is packed full of tea shops and little independent boutiques. It also boasts the first property acquired by the National Trust, Clergy House, which is a beautiful house with a cottage garden and Medieval Hall.