Anyone that is planning on going to London may enjoy a very helpful guide! This source has helped others and me over the years with "What's going on in London", Shows, shopping, touring, and just plain "Information" has really been helpful! The source:
The April edition just came out and it is very informative. It comes out once a month. Information on Marriott properties can also be published in this monthly report.
Hope you enjoy, and have a wonderful trip!