In July 2013, my husband and I invited our family to visit London. There were eight of us, including 3 grandchildren, ages 6,8, and 10. My husband and I have been to London dozens of times and it is our favorite place.
Because we had a large group, I decided to hire a guide who would be great with children, and have excellent knowledge of London and the area around London. I selected John Blakey, a Blue Badge Guide. I had read many glowing reports about him, and contacted him over a year ago. He put together a three-day tour for us that was exceptional. John made sure children took double decker bus, tube, boat trip down the Thames to Tower of London, etc.
After 4 nights in London we flew to Barcelona for a Mediterranean cruise on a ship that had everything for children. Here is the best part about the entire experience. When I asked what was their favorite part of the vacation they said London and John! I agree.