ALL traffic cars have both audio and visual recording inside.
No it won't get chucked out of court if they didn't tell you first you were being recorded, as plod are allowed to break the law in "procurment" of evidence.
YES they have to let you see it as you are on it and also have to give you a copy if you ask for one, if they get arsey over this ask to speak to the DATA PROTECTION CONTROLLER, every force has to employ one who's specific aim is to deal with data protection, who knows the law inside out on this point.
tabetha