| I got fed up with my original solution so refitted the ally bracket from the original but without all the plastic bits. Still relatively neat but very secure. The number plate light has beed epoxyed to the underside of the rear light. This means shaving off the lip on the lense cover with the two bolt holes. A bit of work but works fine. I'll take a pic later.
Oh and it's free of course! | 
Threaded Mode