I applied online. The process took 2 days. I interviewed at Tesco (Welwyn Garden City, England) in Sep 2011
Interview
There was a very simple phone conversation with the temping agency (who were hit and miss- some good, some bad), which was just checking basic stuff, followed by a face-to-face sit down with them. This was just proving right to work etc. Finally there was a sit down with two merchandising managers (only one showed up), which was a fairly informal conversation.