And far from being a radical tearaway from an inner-city council estate, the man we have identified as Banksy is, perhaps all too predictably, a former public schoolboy brought up in middle-class suburbia.
Our search began with a photograph taken in Jamaica showing a man in a blue shirt and jeans, with a hint of a smile on his face and a spray can at his feet.
Indeed, it was Twitter-mad Douglas who encouraged his co-star to join the site in the first place, writing: ‘@nookirby [Vanessa’s user name on the site] is my Great Expectations co-star . He was seen cosying up to her during a Mulberry show at London Fashion Week, and they posed together at the Burberry show the next day.
Vanessa affectionately mocked Douglas’s turn of phrase, tweeting: ‘ “Divine” brunch.But perhaps his most provocative statement, and the one that generates the most publicity, is the fact that Banksy's true identity has always been a jealously guarded secret, known to only a handful of trusted friends. Such is the curiosity about Banksy that when the great man threw a pizza box into a bin in Los Angeles, the box resurfaced on auction site e Bay, with the seller suggesting that the few anchovies left inside might yield traces of his DNA.He is the Scarlet Pimpernel of modern art, so adept at leaving false trails that even his own agent has claimed that he is not certain of his identity.He has dozens of celebrity collectors including Brad Pitt, Angelina Jolie and Christina Aguilera. That his parents don't know what he does, believing him to be an unusually successful painter and decorator.In the frame: The man in this photograph, taken in Jamaica four years ago, is believed to be Banksy He is also known for his headline-making stunts, such as leaving an inflatable doll dressed as a Guantanamo prisoner in Disneyland, California, and hanging a version of the Mona Lisa - but with a smiley face - in the Louvre, Paris. Then there's the suggestion that Banksy is actually a collective of artists and doesn't exist at all.