It is illegal to use an adapter in this country, never heard of anyone being prosecuted but when LPG comes into the MOT it will be picked up then and your car will fail. As we all know insurance companies will find anyway possible to get out of paying money so its up to you to find out if this will be a problem for them. LPG converted vehicles coming in from the Eurozone have a special dispensation for using adapters while they visit over here as we have to over there, except you of course. I have mine mounted in the bumper and it doesn't bother me being seen. Good luck Mike.