We are in London and our daughter will be joining us. She is 20 and is inexperienced in navigating public transit options. We are staying near Tower of London and planning on meeting her at the airport but wondered if the tube is the best way, (most efficient/economical for a round trip for hubby and me) or is there some other option we had not considered. Her flight will arrive around 2100, so will be late after she clears customs.
Thank you!