Bought mine from Les Bray of Veedub Machine. Yup, ebayer, but I am happy with the quality of them. Fully e marked too which is the important thing for the MOT. And not too expensive either. And I also have an upgraded wiring loom, and 100watt lamps! 
I got my Lefty lights from this seller. When i mentioned it to him he got a bit shirty and told me to return them for inspection at my expense. I couldn't be arsed with the drama so kept hold of them but it has put me off dealing with this seller again. 
That's a shame. I actually found him very helpfull. I also bought my centre caps from him, but the part numbers differed between my old, knackered original ones, to his new ones. So we were both on the phone with vernier calipers making measurements. I ended up buying them and they are perfect. Still, some you win, some you lose.