High level brake light

Hi guys, got a problem with my high level brake light on my 2003 TD5, which has blown fuses and whilst braking had smoke coming from the metal on the glass, which I assume is the circuit, can this be repaired easily and successfully or do I need a new glass. Also would I need a glass with a third light or could I get away with it for MOT, many thanks

For the MOT if the light isnt present then it isnt tested, you can tape up the third brake light so its no longer visable.