Is there any drivers out there please that,could explain it to me please e.g like what area’s does it cover and cost and where do you obtain as i been driving around london all morning rang the young muppet in office to ask if we have 1 as im lead to believe you dont have to show a disc in the window it can also be done on the trucks number plate,the reply i got is i dont now what your on about m8 and this guy is a transport planner and info would be great thanks again