As Britain endures a cold snap, there is chaos on the roads as snow, ice and freezing fog conditions persist. RAC patrols battle to reach snowed-in motorists, while heavy-recovery specialists CMG Rescue Services are out 24 hours a day tackling the aftermath of overturned HGVs and traffic collisions. In Bournemouth, RAC patroller Louise French is first on the scene at a serious accident and has to treat a casualty as she waits for the ambulance to arrive.