Oh yeah, becoming more common - I remember them going in at the Morrrisons in Holloway Road in what was probably early 2009, but then they were always in the Tesco Express round the corner from the same flat from when I moved in there in 2008, but then again I'm sure there were some in place when I was band-commuting from Brighton to London and that was 2005 / 2006... I just can't remember exactly when I first saw one. But lots of Dutch people are seeing one for the first time, and being confused. And they don't even have the bagging area or anything.