Thomas Lamadieu - who hand-draws characters in negative space in his photos of cities.
Hattie Newman, paper sculptures
Jack Cunningham - 3D printed dinosaurs
Georgina Naughton - Grace Jones
Lovely display at the stall of 'Not Another Bill'
NOMOCO - Piano Lady (represented by http://www.pocko.com/)
More high-res images on phone / more detail in sketchbook.