We caught a boat up the Thames from Westminster Pier to Kew which was a pleasant way to get to Kew Gardens. This is The Hive at Kew Gardens. We also saw the Chihuly glass installations throughout the Gardens and glasshouses. However, we didn't think it was as good as the 2005 show of his work at Kew.
Enjoyable as the gardens were, we found the constant low-flying planes into Heathrow airport somewhat tiresome.