Just for the record JAL lights have never failed an IVA or MOT. One IVA inspector was quoted as saying that JAL lights should be fitted as standard. Blue7 is correct in the fact that the legislation has simply not kept up with technology. There are numerous instances of modern car manufacturers 'bending' the rules in their favour but ultimately making their cars better. Wrightpayne is also correct in pointing out that many of us already drive heavily modified cars. The whole point here is safety, you are much less likely to be involved in an accident if other drivers can see you. JAL has upgraded thousands of Caterhams around the world without issue. In fact, our lights are still so popular that we have sold out again! As for worrying about your insurance company not paying out, that's simple. Tell them! I have told every insurance company for all my Caterhams that I have upgraded to aftermarket LED rear light panels. They are more than happy to add the modification to my policy free of charge. In fact they are happy to add anything that makes your car safer and less likely to be involved in an accident in the first place. Here is a video from James Morris showing how bright JAL lights are with clear lenses and high level brake lights.
Be safe everyone Doug