I will be retiring shortly and would just say that it costs up front about £4,000. to sit the exam and there is no guarantee of a pass. No pass no job. Lots of firms still wont employ a new driver they say its the insurance issue. You could lose your licence and job if you are breath tested after a family celebration . Adult onset diabetes could put you out of a job. A pedestrian or cyclist could do something really stupid and you are prosecuted for causing death by dangerous driving. I quite like my work but am mainly on rural roads.