British Art Show: Comic, historic, poetic, clever...

Milena Dragicevic, Supplicant 13
Dragicevic's portraits are made of hybrids of faces, masks and unidentified objects which have a mysterious force of personality Photograph: PR

Milena Dragicevic, Supplicant 77 Photograph: PR

Christian Marclay, The Clock
An anthology of film clips featuring clocks, watches and movie characters reacting to both. Each narrative is established for a moment or two, then replaced with the next Photograph: PR

Marclay has made a 24-hour marvel out of these fragments, managing to find a clip for every minute Photograph: PR

A visitor admires a cardboard model of the cylindrical 1920s house of the Russian architect Konstantin Melnikov, part of Ian Kiaer's Melnikov Project, Silver Photograph: David Sillitoe

Ian Kiaer, Melnikov Project, Silver
Photograph: David Sillitoe

Sarah Lucas, A Nud
Lucas is exhibiting a series of not-quite figures, resembling limbs, fashioned out of nylon stuffed with kapok Photograph: David Sillitoe

Spartacus Chetwynd, The Folding House
A tree-house-sculpture composed of old windowpanes and other discarded materials Photograph: David Sillitoe

Visitors wander through the exhibition at Nottingham Castle Photograph: David Sillitoe