This was the first UK solo exhibition of work by Spanish artist Santiago Sierra, involving photographs and video documentation of his performances and interventions. It was concerned essentially with the nature of the value of human labour. From Lima, Mexico City and Havana to Berlin, Helsinki and Birmingham, Sierra paid standard or minimum wages to refugees, illegal workers, prostitutes and homeless people to perform set tasks. Repetitive, obtrusive, and often pointless, remunerated actions stand as harsh yet poetic metaphors for modern world politics.