Stolen bikes

Can I just ask the Brick Lane Watchers out there...

Who are the guys with the White Transit, taking photos of bikes and writing stuff down and whatnot just at the bit where the road is blocked by the East London Line works at the moment?

I saw them yesterday when walking with my boy. They had a half decent MTB/DH bike and were taking pics and looking for frame numbers Etc. Are these the inspector dudes we've heard about? They weren't wearing any uniform or IDs or anything.

I don't like the sound of that. Not that I've ever locked my bike up in that area.