There's a revolution happening in London. But it's not a political one, or even a social one. Far away from the headline-dominating machinations of governmental Westminster and the bright lights of the glitzy west end theatres, an artistic revolution has been gathering pace in the East End of the city. Into this atmospheric, edgy neighbourhood come the artists, often incognito, to adorn the walls with their creative, talented, sometimes controversial works.

The Queen Elizabeth Hall, Purcell Room and Hayward Gallery on the South Bank are now closed, preparing for a two-year refurbishment, and will re-open in 2017, which is exactly 50 years since they first opened in 1967-8. They are immune from listing status, unlike the Festival Hall, which is Grade 1 and the National Theatre is Grade 2 listed.