For months, we have seen London’s Double Decker Bus Sightseeing Tour around town and thought wouldn’t that be fun to do one day.   This morning, keenly aware of the passing days of summer I woke both of my kids up and told them we were once again going on a surprise adventure. (These are truly one of the best parts of parenthood.) What is London’s Double Decker Bus? I had secretly planned to take them on the Tourism London’s Double Decker Bus Sightseeing Tour. The 1969 Bristol VR leaves every day of the summer through until September 7th from Tourism London’s office. My daughters and I have both…