I am pretty sure that we will find something in London though England is not well known for its fine cuisine 
Despite that let’s not plan too much in advance (this is so german). It’s always good to leave some space for ad hoc decisions. So I am always in favor of finding a nice small restaurant around the next corner than visiting a over-sized, systemized, mass-gastronomy. And I believe that our british friends will have far more and better recommendations where to go than we have.
Usuallly, we go to Jimmy’s http://jimmysrestaurants.com/restaurants/ which has a great choice of all you can eat food. These is a favourite amongst XOJO users as you are able to be seated together. The problem with small pubs and restaurants is that often they cannot accommodate large numbers and are very noisy.
any last minute registrations this week?