Wonderful place for an indulgent afternoon tea. My favourite room is the millennial pink bathed Gallery room where the walls are covered in a sea of original David Shrigley art. The bathrooms feature beautifully designed individual egg-like pods and there's even a waiter whose sole focus is to serve you caviar.
A small place to eat with great vegetarian/vegan food just off Camden High Street. This place does an amazing buffet at a great price, as well as serving reasonably priced tea and juices.
The best thing about any charity shop is that you never know what you are going to find. I have a well tested route around London that includes all of my favourite charity shops. This Oxfam has a great selection of books and often turns up some interesting clothes too.