This week several newspapers ran stories claiming that the vast majority of the tents outside St Paul's were empty at night.
The papers hired heat-sensitive camera equipment to take temperature readings of the tents. Only a tiny fraction of them glowed with heat. Protesters have since hit back by hiring the same equipment to record what happens when someone goes into a tent. In a video posted online people who glow white and yellow in the camera's sensor disappear when they go inside a tent. The maker of the camera issued a statement yesterday saying that the protesters had not allowed enough time for the outside surface of the tent to warm.
However, one protester told The Independent: "They've been caught out. We're not saying it was deliberate, just incompetent and they should admit it."