The only place I've seen love locks is across the street from Boxpark, near the old railway arches in Bethnal Green Road, but this fence doesn't look at all like the one there.

Yes, I've seen them there too. And you're right - this isn't there. It's high up...

Archway bridge?

That's the place, Tetramesh. (Not far from one of my other entries...)

there are hundreds on the pedestrian bridge over the thames to tate modern

It's the trendy thing to do at the moment (if you're young and in lurve that is...)

Hmmmm... suspect symbolism I'd say... love as a prison...

You could be right...