I live in the USA. I have booked a twelve day trip to the UK in October/November for me and my oldest dgd, who will be 11 and a half when we get there, so she can meet her young British cousins and become acquainted with her dad's British origins. We will be staying in Hemel Hempstead, as that's where my dd lives. I think we are likely to spend several days in London but not every day. AIBU to think there must be a way to get discounted travel both to and in London? I have time to set it up in advance, but at the moment I'm finding the options quite confusing. Help please?