OK, I want to mount one of these
on the handlebar of my Brompton, but there doesn't seem to be a suitable mount for these (or at least I haven't found one) yet.
Ideally it would be permanently mounted and the clamp should be a split ring type affair so I don't have to remove everything from the bars. I don't mind knocking up a final bracket for the lamp itself out of aluminium, if needed.
What can you lot come up with for a clamp?