Banksy

He's one of the world's most famous artists, but despite his global following, his identity remains, officially at least, unknown.

Often described as "elusive" and "secretive" by the press, the "guerrilla street artist" counts A-list celebrities, such as actor Brad Pitt, among his fans and collectors.

A hero to some, a vandal to others, his artworks sell for eye-watering sums, with councils and landowners rushing to profit from – or whitewash – buildings chosen as his latest canvas.

And yet, the self-styled prankster and anti-establishment figure has consistently managed to remain anonymous.