Mark Wallinger: ponies, politics and a police box

Time and Relative Dimensions in Space (2001), a life-size mirrored model of the Tardis from Doctor Who
Photograph: Courtesy of the artist and Anthony Reynolds gallery, London

White Horse (2008), expected to be Britain's largest sculpture, will appear near the A2 in Kent at an as-yet-undisclosed date
Photograph: Courtesy of the artist and Anthony Reynolds gallery, London

Sleeper (2004), a video installation for which Wallinger spent several hours wandering around a Berlin art gallery dressed as a bear Photograph: Copyright the artist, Courtesy Anthony Reynolds Gallery, London

Self Portrait, Freehand 2 (2007)
Photograph: Courtesy of the artist and Anthony Reynolds gallery, London

Mark (2010), chosen as the cover picture for Martin Herbert's monograph
Photograph: Courtesy of the artist and Anthony Reynolds gallery, London

State Britain (2007) – the installation for which Wallinger won the Turner prize in 2007 – is a faithful recreation of Brian Haw's anti-war display outside parliament
Photograph: Dave Morgan/Courtesy of the artist and Anthony Reynolds gallery, London

State Britain (2007) from another angle
Photograph: Dave Morgan/Courtesy of the artist and Anthony Reynolds gallery, London

Ghost (2001), a life-size image of Stubbs's Whistlejacket (1762) – in negative with a unicorn horn
Photograph: Courtesy of the artist and Anthony Reynolds gallery, London

According to Mark (2010)
Photograph: Courtesy of the artist and Anthony Reynolds gallery, London

Ecce Homo (1999). Wallinger says his Christ figure on Trafalgar Square's fourth plinth was not meant to be irreverent: 'I wanted to show him as an ordinary human being ... I think he has a place here in front of all these oversize imperial symbols'
Photograph: John Riddy/Courtesy of the artist and Anthony Reynolds gallery, London

Mark (2010). On being asked to create an image that said something about the current state of art, this was Wallinger's reply
Photograph: Courtesy of the artist and Anthony Reynolds gallery, London