Mayflower.-3

Most of the larger tables are upstairs and they have the swivel layered table for the people who love to order a tonne of dishes.
 
On the other hand, you've got Mayflower which is on Shaftsbury Avenue, and lights on with big open windows welcoming people till about 1am. Aside from being a restaurant that opens late, it's a restaurant that serves pretty decent food. The pot you see above is a sort of soft tofu.