Today I went on a Harry Potter walking tour, starting at King's Cross Station. We saw a lot of the places where they filmed scenes in the Harry Potter movies, including the Leaky Cauldron, the Ministry of Magic and Diagon Alley.
They used to have a Harry Potter montage with a trolley half in the wall on one of the actual platforms, but they have moved in due to construction and all the congestion it was causing (hehe).