"The London Olympic Site has a "neurotic compulsion to enclose and alienate", wrote the author Iain Sinclair last year, and it "justifies itself by exploiting temporary fences to use as masking screens, noticeboards for sponsors's boasts, assertions of a bright, computer-generated future." It's natural, then, that some people want to see what lurks behind the corporate optimism of these fences - both literally and figuratively. On his blog, former Hackney resident Stephen Cornford has documented a series of trips he's made to the site, dodging securoty guards and CCTV cameras in what he thinks of more as political performance art than an act of trespass. "The 500 scres that make up the site were compulsorily purchased in one fell swoop," he explains, "transforming a chaotic and overlooked area into the largest single expanse of public land in our hypercapitalist capital." But although it's public land in theory, hardly anyone's allowed inside, and even on official tours, you're not supposed to take photos.

"This work aims to question the restriction of both access to and imagery from the zone, enforced by the construction of the blue fence that surrounds it - strategies typical of the creeping privatisation of our public spaces" A site for sore eyes indeed.

Ned Beauman (Dazed and Confused)