Thanks to all of you for the great suggestions! We will get to visit some of the attractions with our group such as Windsor Castle, the Tower of London, and private shopping time at Harrod's (hurray!!!). Charlene you have relieved my shopping worries about the exchange rate. I will just pretend that every pound is equal to a dollar and spend away! We do want to tour some of the museums and it is nice to know that they are free. I love the Beatles and certainly want to say I've been to Abbey Road. It sounds like the walking tours and the bus provide a good way to see the sights. I really enjoyed reading that trip report from Fodor's Olivia, so glad you shared it.
Sue