Bought a 1 day hop on hop off ticket. Kept us busy from 10am to 6pm.
Started outside hotel to marble arch. Change tour route there. Stopped at Buckingham Palace, Westminster abbey (even attended church service but couldn't sightsee inside), walked to Downing St, Trafalgar Square, nondescript high tea, back on bus to cross the London bridges, Tower of London, the Shard, along the Thames.
Back to Marble Arch, meet Lai-Ling and have dinner in Korean restaurant wi...