The National Gallery is exhibiting three of Titians most famous paintings from his Metamorphosis series, as well as reactions to it by contemporary artists, poets and choreographers, as part of the Cultural Olympiad, a “summer”-long festival in the UK celebrating Britain’s cultural landscape. Nowhere does it say that the events, acts, performances and exhibitions of this Cultural Olympiad are for British self-promotion, but with a bouncy castle Stonehenge and 37 Shakespeare plays performed in 37 languages, not to mention the patriotic opening ceremony, you have to assume that promoting Britain and her diverse cultural landscape is indeed the aim of the Games.   I was surprised, then, to see that…