What is the law concerning after-market auxiliary lighting systems on vehicles in the UK? Having been told that my motorcycle appeared almost invisible from the rear when driving in fog and moderate spray, I have bought a pair of red LED ultrabright strobe strips (4.5 x 1 cm each). They flash in a similar way to the rear spray lights on F1 cars. I want to fit these either side of the rear light housing with an activation switch on the bars for driving in very poor visibility. Is this legal? Is it possible that I will get a fine for displaying such strobing lights? Thanks