Who is Banksy?

As Australia gears up for one of its biggest ever Banksy exhibitions, it’s thought the illusive Bristol street artist will snub the show curated by his former agent, Steve Lazarides. The exhibition is taking place in a car park in Melbourne with more than 80 pieces of work on display. And while it may be a "major coup" for Melbourne, according to the city’s mayor, speculation remains rife as to who Banksy actually is?