I didnt managed to find my plate. Went home the same route but saw nothing, but spotting a plate at 70mph is a bit of a challenge. I kept a good eye out for the law, was easing off near all the junctions just in case I saw an officer at one I could turn into it and not pass them.
I think if I would have been stopped I should have been ok since you could see the remains of the snapped bracket still attached underneath the lights. So didnt quite look like I was deliberatly riding around without a plate.