I have two that will be off. Just wondering how I add up worst-case fines as I'm resigned to just paying them, but from what I read there is a theoretical prison sentence, or they can decide they're not going to give you the option of a simple fine and take you to court instead, or something. Does anyone know how this works? Before anyone asks, yes they are both on isolation (genuine, due to high temperature), but that'll be over soon. I don't want them going back.