We are 2 families, 4 adults and 4 kids (age 8, 11, 13, and 16) reaching at LHR airport from USA.
Which will better economically save money and time to purchase, Oyster Card or London pass with travelcard?
We'll be able to spend half a day in London on June 1st, all day on June 4th and most of the day on June 5th.