Cleopatra's Needle (HPANWO London Truth Tours- Part 5)

On the Embankment of the River Thames in London stands an original Ancient Egyptian obelisk known as Cleopatra's Needle. In reality it is much older than Cleopatra and by far the oldest object in London; why is it set up in the middle on a street and not in a museum?
Background film: http://hpanwo-tv.blogspot.co.uk/2009/02/illuminati-pyramids-in-oxford.html