To help keep costs down, we utilized the London Pass with the Oyster travelcard to save on activities and transportation. We used it for admission into the Churchill War Rooms, Westminster Abbey, and more. Another advantage was that it included activities not originally on our itinerary, like the Shard, from which there are stunning views of the city at night.
London is famous for having some amazing museums with extensive collections. During out stay, we visited two spectacular public museums with extensive collections documenting millennia of natural and human history. A science lover, I enjoyed learning at the Natural History Museum. To learn more about the history and ancient civilizations the kids were studying in school, we visited the British Museum. Both are public museums that are free admission.
The Cranky Camper 