anything like street art or graf in saatchi?

as a traveling mural artist who has personal connections to both the "street art" and "graffiti" cultures, I'm taken aback by the lack of representation in these fields on saatchi. only a handful of artists who are labeled as creating something akin to street art seem to have any connection to these communities. so I'm going to collect those few and far between who i feel belong to these subcultures.