I saw this today at The Hayward as well as Mark Wallinger's 'The Russian Linesman' exhibition.
This had me standing in awe for such a long time. The pieces are all very similar but it was so thought out in every little detail. I'm afraid the website doesn't provide many examples of the work but I recommend you go see it! There is quite a variety of media used but the presentation I think is one of the best aspects - use of space is definitely important to think about.
(I still cant get the hyperlinks to work on this computer)