I read the entire thing, what on earth are you on about?
If a car has factory HID's that have approval they are legal - FACT
If a car has retrofitted factory HID headlights that have approval into their car that did not come with HID's they are legal - FACT
If a car has fitted HID's into their cars' headlights that are made for halogen bulbs, it is illegal - FACT
Pretty much the same law every where in the world.
God I can't believe im getting into another HID argument.
Are you seriously going to deny those three statements even though those three statements are backed up by the link that you supplied? So you are trying to say that every single new Ferrari, Aston Martin, Lamborghini, BMW, Mercedes, Lexus, Landrover and the dozens of other car manufacturers that use HID's in nearly all their newest cars all have illegal headlights in Britain and can get done for them? Because that is what it appears like you are saying.