For fun, here are photos of two coffee shops/cafes in the United Kingdom that have a certain amount of celebrity status associated with them. The first is the Beatles Coffee Shop in London. If you take the excellent and interesting two-hour Beatles Walking Tour, this is where your trip concludes.
The second is the Elephant House Tea and Coffee Shop in Edinburgh, Scotland where J.K. Rowling wrote Harry Potter. It has excellent food and an outstanding view of the Edinburgh Castle. Be sure to see the table where Ms. Rowling sat and wrote the books as she looked out over this lovely city. Definitely worth a stop to visit.