Well I live & learn!
Someone named Belle kindly left a comment on my post ('just one look') that the guy I'd shot (but didn't stop to pose or speak to) is Matt Hitt, who's in the Muscle Club (and a model). I was just looking at their video: they're really good! They're playing around the UK, if you want to whisk him off to a desert island, you can find him on myspace (he's presumably the one with his cute as a button face hidden behind the camera).
Thanks Belle! ; ) xox