I am really fortunate to be the mother of a flight attendant and am planning to tag along on a weekend layover to London. We will be landing mid-morning on Saturday at Gatwick & leaving first thing Monday morning. My plan is to take a train to London from the airport while my daughter gets some sleep on Saturday and perhaps go on a bus tour of the city on my own. We will both go into London together for the day on Sunday. I would appreciate any advice - such as what bus tour would be easiest for me to connect with. I am capable of getting lost at the mall, so I'm looking for very straighforward plans for the day on my own.