Two hour bus ride into the city, but it was worth it. Westminster Abbey, London Eye, lunch, cruise on the Thames, and a city bus tour. Great overview of the city. I was blown away by Westminster Abbey and seeing Charles Dickens and Charles Darwin's graves. The trip back to the ship was very slow because of traffic. Some walking between the London Eye, the restaurant and the boat. Walking at the Abbey was over rough stones.
Disembarkation tour--city tour and Tivoli Gardens. Loved it. We had an excellent guide and multiple photo stops. I was surprised how uncrowded the city was. Loved seeing the Little Mermaid. Also it was amazing standing just feet from the Queen's palace. The security needs are much less that the US.