The first place I went to was on a charming street with some very interesting shops. Persephone Books is a book store that publishes all their own books. There were about 5 ladies working in the tiny shop. Each one was printing, wrapping, sorting and of course gossiping.
Each book that was printed at the shop looks the same on the cover (besides the title), but on the inside of each, is a unique design.
Unique design inside cover.
Another noteworthy book shop was The London Review Bookshop. This place was probably no bigger than 800 sq. ft. but the books were crammed in wherever they would fit. There were shelves and tables full of books all lined up and stacked upon each other. There was also a lovely but very tiny coffee shop attached.
Somewhere I did not go today, but I heard was a delicious little place (to try with Eric) located in Hyde Park: The Cookbook Cafe. No, it's not a book shop, but there are recipes in the table - date night, love?